JPH0221741A - Picture processor - Google Patents

Abstract

PURPOSE:To enhance the degree of freedom of expansion of a slave processing unit under the management of a master processing unit by providing a connection discrimination means, a processing command supply means and a start means starting the connection discrimination means in the standby mode. CONSTITUTION:The start means 11 starts the connection discrimination means 9 in the standby mode and the connection discrimination means 9 sends a communication command 6 to plural slave processing units 1-4 via a communication means 8. Since the communication command 6 controls the communication of a management data of the slave processing units 1-4, the communication command 6 is fed to the slave processing units 1-4 and the connection state between the communication means 8 and the slave processing units 1-4 is discriminated. Thus, the master processing unit 7 supplies the processing command 5 only to the slave processing units 1-4 to be operated. Thus, the system can cope with the expansion and reduction of picture processors due to the addition or the reduction of the slave processing units.

Description

[Detailed description of the invention]

[Industrial Application Field] The present invention relates to an image processing device, and particularly relates to a paper feeding unit, a software
Multiple slave processing units each controlling data, etc.
and the operation of these multiple slave processing units in a comprehensive manner.
communication method with the master processing unit that manages and adjusts the
related. [Prior Art] Conventionally, documents disclosing this type of image processing device include:
For example, Japanese Patent Application Laid-open No. 103299/1983 is known.
In the image processing device disclosed in the publication, the copying machine
Even if data is sent from the main unit control unit to the option, the data will not be sent.
If no response signal is obtained for the output of the
Supply the same data to the option a predetermined number of times, then
If you cannot get a response signal from the option, try
The system controller detects the occurrence of a connection error regarding the option.
to display the occurrence of the error. [Problems to be solved by the invention] In the conventional image processing device described above, the main body control section does not provide data.
The targets (options) to be provided were fixed. However, in actual image processing equipment, paper feeders and sorters
Units such as
The objects to be connected and the objects to which data should be supplied vary.
do. Therefore, in the conventional image processing device described above, the scheduled
Even if you can detect a connection error for an option that was
This feature cannot be used when newly connecting an unspecified option.
There was a problem. Therefore, it is an object of the present invention to
Increased flexibility in expanding slave processing units under the control
Is Rukoto. [Means for solving the problems] The gist of the present invention is as shown in FIG.
Multiple slave processing units, each implementing a given function.
1.2.3.4 and instruct the implementation of the above prescribed functions.
Processing command 5 and management data of the slave processing unit above
selectively outputs communication command 6 that controls data communication.
to manage the plurality of slave processing units 1.2.3.4 above.
a master processing unit 7 that processes
Processing unit 1.2.3.4 and the above master processing unit
and the above processing command 5 and the above communication command.
and a communication means 8 for transmitting communication with the code 6.
The screen can be switched between mode and standby mode to function.
In the image processing apparatus, the master processing unit is
The communication command 6 is sent to the plurality of above via the communication means 8.
The slave unit 1.2.3.4 is supplied with the slave unit 1.2.3.4.
unit 1.2.3.4 is connected to the communication means 8 above.
connection determination means 9 for determining whether or not the
It is determined that the communication means 9 is connected to the communication means 8.
The above operation mode is only for slave unit 1.2.3.4.
, the processing command 5 is sent via the communication means 8.
The command supplying means 10 and the command supplying means 10 in the above standby mode.
and a starting means 11 for starting the connection determining means 9.
That's true. [Operations and Effects of the Invention] In the image processing device according to the above configuration, it is possible to enter standby mode.
Then, the activation means 11 activates the connection determination means 9, and the connection determination means 9 is activated.
The determining means 9 sends a plurality of communication commands 6 via the communication means 8.
slave processing unit 1.2.3.4. General
The communication command 6 is sent to the slave processing unit 1.2.3.
This is a command that controls communication of management data in step 4, so the thread
server processing unit 1.2.3.4 to perform some function.
Although it is not intended to make the communication of those management data
control, so the communication command 6 is transmitted to each slave processing unit.
1.2.3.4, each slave processing unit
The connection status between the unit 1.2.3.4 and the communication means 8 is determined.
be done. In this way, communication means 8 and each slave are connected during standby mode.
Starts again after determining whether there is a connection with the processing unit.
In the operation mode set, the command supply means] 0 is the connection
A thread whose connection with the communication means 8 has been confirmed by the determination means 9
Processing frame only for web processing unit 1.2.3.4
5 will be supplied. Therefore, the image processing device
After startup, slave processing units are added or removed.
Even if the master processing unit 7 is removed, the master processing unit 7 remains operational.
processing unit only during processing unit 1.2.3.4.
Command 5 is now supplied to the slave processing unit.
Supports expansion and reduction of image processing equipment by adding or deleting
can be met. In addition, the slave processing unit whose connection has been confirmed in reality
Since processing commands are supplied only to the
sends unnecessary commands to the authorized slave processing unit
It is possible to achieve the specified function at high speed without any problems.
Ru. [Embodiment] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. one
The embodiment is an example in which the present invention is applied to a laser printer,
The present invention is applicable not only to laser printers but also to copiers, etc.
It is also applicable to digital copiers. Figure 2 is a block diagram showing the macro system configuration of one embodiment.
21 is a printer as a master processing unit.
controller (hereinafter referred to as MSC) at 22.23
．． 24.25.26 operates as a slave processing unit
Controller for working part, controller for printer engine
, paper feed unit controller, sorter controller
, controller for the image processing section (these controllers are
(hereinafter referred to as SSC). Above 5
Among SC22 to 26, 5SC22, 23, and 26 are laser
It is an essential controller for printer system configuration.
5SC24 and 25 have paper feed mechanism and sorter as options.
This is a controller that is added when adding as a. MSC21 is a macro system interface as a means of communication.
5S022 for the operation unit, printer via the interface 27
5SC23 for engine, 5SC24 for paper feed unit,
Connected to 5SC25 for data and 5SC26 for image processing section.
The 5SC22 for the operation section allows the user to use the laser printer.
Scan the various operation switches to give instructions to the
is detecting the operation. 5SC23 for printer engine
is the drive unit of the drum mechanism as a lower system, and the light
Multiple functional units such as academic units) UNIT1~UN
It manages the operation of the IT3 and therefore
5SC23 for engine is a unit with these multiple functions.
ITI~UNIT3 and subsystem interface 29
connected via. Each functional unit UNIT
1~UN I T3 is mechanical configuration and printer engine
It is equipped with a control section under the control of the 5SC23,
I will omit the details. In addition, 5SC for paper feed unit
24, 5SC25 for sorter and 5SC2 for image processing section
6 also have a paper feed mechanism, sorter mechanism and display respectively.
Although it is accompanied by a unit, detailed explanation will be omitted. Although not shown in detail in the figure, the laser printer of this example
constitutes part of the upper user system, and the MSC
The operation of 21 is performed by the supervisor 28 in the user system.
Under control. Figure 3 shows each SSC.
Accessed by microprocessor 31 within the SC
This is a block diagram showing the logical address space of memory.
In the example, 5SC22 for the operation section and 5SC22 for the printer engine are used.
5SC23, 5SC24 for paper feed unit, 5S for sorter
Regarding each of C25 and 5SC26 for image processing section
It is provided. In detail, it is managed by the microprocessor 31.
The command register 32 (
CMD-REG) and status register (GSTAT
-REG) and into multiple (two in this example) areas.
local mode map (LM-MAP) 34,
Global mode map (GM-MAP) 35 and
Ring area 36 and report register (REPO-R)
EG) 37 are defined, and these registers 3
2 to 37 temporarily hold data information etc. detailed below.
do. Note that the microprocessor 31 is in local mode.
Stretch of map 34 and global mode map 35
When you access a specific address called a
and the microprocessor 31 uses the local mode map 3.
4 or to a specific address in the global mode map 3S.
rather than the string area corresponding to the specific address.
36 will be accessed. Next, the information temporarily held in each register 32 to 35 is
I will explain the information etc. From MSC21 to each 5SC22~
The processing commands and communication commands supplied to
Temporarily stored in the command register 32 of 5SC22 to 26.
The microprocessor 31 of each SSC issues commands.
When it becomes executable, it is held in the command register 32.
Processing or communication commands that are
It is supplied to the processor 31. Each 5SC22-26 realizes at least a single function
The execution mode is standard mode.
It has a Standard mode is for MSC2 and 1, which will be described later.
Initialization subroutine program 5BI (see Figure 17)
It is initialized in the MSC 21 when the MSC 21 is executed. 5SC2 each
For 2 to 2 days, the processing command that specifies the standard mode from the MSC21
It is not possible to switch to standard mode by supplying command.
and achieve the given functionality specified in standard mode.
become. In addition, each 5SC22 to 26 is specified in standard mode.
Functions other than those specified can also be realized, and the
Two mode managers are available to realize functions other than standard mode.
It is equipped with a diameter of 34.35. Global mode map
35 holds mode information common to all 5SCs 22~26
In contrast, C, local mode map 34 is
It maintains mode information specific to each SSC and
The mode information held in the mode map 35 and the
Mode information held in the local mode map 34
Performs functions other than those specified in standard mode based on
can be made to appear. Local mode map 34 has
Mode information is retained as described above, but other information is also retained for each
Holds SSC status information. As mentioned above, the book
In the embodiment, local mode map 34 is divided into two regions.
Because it is divided, each SSC handles multiple functional units.
If managed, each mode information and status
Information will be divided and managed. In addition, these Modema Mbu 34.35 were established in the first month.
It is set to the standard value at a scheduled time. As mentioned above, the local mode map 34 includes various
Mode and status information is retained, but this
Their status information etc. are summarized and stored in the status register.
It is held at 33. Therefore, the MSC21
Each 5SC22~2 to control the overall operation of the printer
If you need to access the status information of 6.
But first, the summarized information in the status register 33
access information and use the summarized information to
Access the status information held in the domain map 34.
Determine whether access is necessary. Therefore, the number of stars of information that MSC21 should have access to is reduced.
This can speed up processing.
. The report register 37 is set in each 5SC22 to 26.
Registers that hold formed sequence report information
and the sequence report information is either 5SC2
2 to 26 indicates that an event that should be notified to the MSC has occurred.
This is information. The memory address in the MSC principle. Figure 4 shows the functional blocks of the MSC21 and the MSC21.
Block indicating the relationship with the logical address space managed by
This is a block diagram, and the logical address space includes 19SC22 to 2.
A command rail with multiple areas, each dedicated to
Dedicated to Jister 41 and 5SC22 to 26 respectively
A status register 42 and a status register 42 having multiple areas where
and report register 43, and common to all 5SCs 22 to 26.
The global mode map 44 and each 5SC22
A local mode with multiple areas dedicated to ~26ξ
A domain map 45 is defined. The above command register
The controller 41 sends processing commands and communication commands to the MSC 21.
Provided for sending from the communication target 5SC22 to 26
and the above sent from the command register 41.
Commands are sent to the command registers 32 of each 5SC22 to 26.
will be held. In contrast, the global model
The mode map 44 is common to all 5SCs 22-26.
Since it holds information, the global mode map 44
The mode information sent from each 5SC22 to 26
It is now commonly held in global mode map 35.
Ru. The report register 43 is provided from each 5SC22 to 26.
A register that holds the sequence report information provided.
Yes, the sequence report information is either as described above.
An event that should be notified to the MSC occurs at 5SC22-26.
This is information that represents what happened. The log set in MSC21
The local mode map 45 is for each 5SC22 to 26.
Provides mode information and stator from each 5SC22~26
This is provided to receive notification of information on each 5SC.
22 to 26, supplied from the local mode map 34.
The status information corresponds to the local mode map 45.
and from the corresponding area to each 5SC22-2
The mode information sent to each 5SC22-26
The local mode map 34 in
It becomes. In the figure, 46 is connected to the macro system interface 27.
It is a receive register with a macro system interface.
The system sent from each 5SC22 to 26 via the base 27
Tracking report information, status information, etc. will be sent to this reception record.
Once stored in the register 41, it is transferred to the reception buffer 47.
is sent to the report register 43 or row.
It is written to the calm mode map 45. On the contrary,
Command register 41, global mode map 44
or the commands held in the local mode map 45.
The mode information is temporarily held in the transmission buffer 48.
After that, it is transferred to the transmission register 49, and then the macro
Each 5SC22~2 via system interface 27
6, or all 5SC22 to 26 corresponding registers, etc.
Sent out. As mentioned above, the local mode map 45 holds
The information to be sent to each 5SC22-26 and the information to be sent to each 5SC22-26
Since the supplies from SC22 to SC26 are mixed,
Each piece of information held in the local mode map 45 is
The 14th and 15th bits are set to the reception notification flag RR and
and transmission request flag TR. i.e.
, in the case of information supplied from each 5SC22-26, the MS
C21 sets the 14th bit of the received information to “1”.
Set it and then save it in the local mode map 45.
Ru. Information for which the reception notification flag RR is set in this way is
, it will be reset to “0” again after going through the process detailed later.
It will be done. In contrast, it should be sent to each 5SC22-26.
A transmission request flag TR is set in advance for the information, and the transmission request flag TR is set in advance.
Information for which flag TR is set to "1" is intended.
5SC22-26. aimed in this way
The information sent to the 5SCs 22 to 26 is sent back to the
0”. Also received transmission request plaque TR1
For all areas of notification flag RR, MSC and SSC
is also reset to "0". The MSC21 has a
A polling control block 50 is implemented and the MSC
21 is controlled by each 5SC by this polling control block 50.
22 to 26, and sends a communication request to
The corresponding 5SCs 22 to 26 respond and communicate information. Figure 5 shows the communication network implemented inside the laser printer.
It is a block diagram showing the work, including MSC21 and each 5SC.
22 to 26 (Figure 5 shows 5SC22 for operation section, printer
5SC23 for engine and 5SC26 for image processing section
) is the macro system interface 2
Common to the two serial communication lines SL and SO that realize 7.
It is connected. Controller software The controllers that make up the network shown in Figure 5.
The hardware configuration of the controller (MSC and 5SC)
As shown in the figure. MSC21 and each 5SC22-26 are my
microprocessor 61 and the operation of the microprocessor 61
Readout that permanently holds the control program that controls the operation
dedicated memory (ROM) 62 and microprocessor 6
Provides the above logical address space etc. managed by 1.
A readable/writable memory (RAM) 63 and a system
The reception register (RX-R) connected to the real communication line Sl
EG) 64 and the transmitter connected to the serial communication line SO.
register (TX-REG) 65 and the above microprocessor.
An interrupt that provides timer interrupt timing to the server 61.
It is equipped with a built-in timer 66. Therefore, in the case of MSC21, the above-mentioned upper user
Supplying commands from the system supervisor 28
When received, the microprocessor 61 stores it in the ROM 62.
While executing the control program that is being
Access the configured logical address space and write the corresponding logical address.
Communication commands and processing pieces held in response space
The serial command is sent from the transmit register 65 to each 5SC22 to 26.
It can be output to AL communication line SO. On the other hand, each 5S
C22 to C26 are the supplied communication commands and processing frames.
Once the command is stored in the reception register 64, the command is
Execute the control program to realize the functions instructed by
RA, if status information etc. is requested.
held within the logical address space provided by M63.
Reads the status information, etc., and sends it to the transmission register 65.
to the serial communication line Sl. In this way,
Status information etc. sent to serial communication line Sl is M.
It is temporarily held in the reception register 64 of the SC21, and then
It is written to RAM63. In this way, the status written to RAM63
Information etc. are read out to the microprocessor 61 and processed.
It will be done. As described above, in this embodiment, the MSC21 and each 5SC22
~26 basically means MSC21 as a control station.
Communication requests (requests) and specifications (sets) sent from
The port to which each 5SC22-26 responds (answers)
Communication is performed using a ring method, and this polling method
The communication by MSC2 is as shown in FIG.
1 to 5SC22 to 26 can be filled at any timing.
Can send the program 71.73.74.76.77.79
However, the responses from each 5SC22 to 26 to MSC21 are different.
Frame 72.7 sent from 5SC22-26
This is done on a time-sharing basis to avoid 5.78 collisions. for example
, as shown in FIG.
The communication request to the 5SC22 is at the polling timing tp.
When sent out at 1, the 5SC22 for the operating section
The identification code contained in the system 71 indicates the communication request for the
identify the request and send frame 72 to the MSC 21 to make the request.
transmit the information. On the other hand, MSC21
When the end of transmission from the action part 5SC22 is detected, the other 5
SC1 For example, communication required to 5SC23 for printer engine
The request is sent in frame 74, and 5S for the printer engine is sent.
When C23 responds with frame 75, its termination is detected.
The communication request is sent to the image processing 5SC26 in frame 77.
Send to. The occurrence of such a communication request occurs in each of 5S022 to 5S022.
A communication request for 26 is a response to a previous communication request.
conditional on the end of the process and filtering of polling timing.
Therefore, it is common that the polling timing has elapsed as a condition.
Processing based on commands, etc. at each SS/C increases the frequency of communication.
This is to prevent the execution speed from slowing down. Na
Oh, MSC21 has nothing to do with communication from each 5SC22 to 26.
Send frame 73.76 to each 5SC22-26 in relation to
can do. l Keiney 11 formation As mentioned above, there is a port from MSC21 to each 5SC22-26.
Information is communicated using a ring method, but such communication
Sometimes information is transmitted in frames of variable length.
Ru. Each frame consists of a fixed length bit string called a character.
It consists of one or more pieces arranged in series, and the following explanation applies.
In Japanese, the first character of each frame is an ID character.
, the characters following these 10 characters are data characters.
It is called ta. Therefore, it is composed of multiple characters.
The frame to be displayed is an ID character as shown in Figure 8.
character and a variable number of data following the ID character.
It will be composed of characters. Each character is
Indicates the beginning of the character, as shown in Figure 9.
The synchronization start bit STA and the synchronization start bit
The 8-bit data bO to b7 following the start STA and the corresponding
The parity bit PA following the data bit and the character
It consists of a synchronization stop beep (STO) indicating the end of the
ing. Therefore, the synchronization start point (STA), parity
Data excluding bit PA and synchronization stop bit STO
The information represented by bO to b7 is an ID character.
and data characters. That is,
In the ID character, b)b7 is set to "1".
This bit b7 set to “1” causes it to become “0”.
Identified from the data characters set to . bit
Does b6 request a predetermined frame response from the destination?
It is used as response request bit A to indicate whether or not the bit
Bits b2 to b5 are 4-bit identifiers that specify the destination of information.
Functions as a separate code (So-53). remaining 2 bits
b1. bO is the area in the logical address space of the destination.
A 2-bit area code (
Ul, U2). Therefore, the ID character with the above bit configuration is the response
Request bit, identification code (SO to S3) and area code
Various information is expressed by the combination of values of the code (Ul, U2).
combinations of these and subsequent data characters
Various frames can be constructed with first
, frames used in this embodiment will be explained. Sequence, command (Sent from MSC21) Requests the start of operation of each 5SC22 to 26 from MSC21
This is the frame that is output to the laser printer.
Used to control overall operation. MSC21?
Sequence commands supplied to each 5SC22-26
is held in the command register. these sequences
In this embodiment, the commands constitute the above processing commands. Ball: ``Shi Tateyu'' - (Sent from MSC21) MSC21 sends all 5SCs 22 to 26 their operating modes.
To change the code all at once or each 5SC22~26
The frame output to change the individual operation mode
The global mode map of 5SC22-26
mode information held in the local mode information, or local mode information.
Modify the mode information held in the tup. - (Sent from MSC21) MSC21 reads the status register of each 5SC22-26
This is a frame sent when requesting information within. Na
In addition, in polling mode, each 5SC22 to 26 transmitter
Used for timing notification. In this example, the above communication
Balls that function as commands: "2 Jri" = & ball (MSC21 or each 5SC22-26 transmission) each 5SC
22 to 26 global mode maps and local modes
The frame output when requesting mode information in a map.
It is a system. The status of each 5SC22 to 26 and the above mode setting
Used to check whether the cut was correct or not.
I can stay. 525 Ennoe (Each 5SC 22-26 transmission) From each 5SC 22-26 in response to the above mode request
This is the frame output as a response. For this response, the local module of each 5SC22-26
The mode information in the mode map is sent. Status answer (each sent from 5SC22 to 26) The above status list is sent from MSC21 to each 5SC22 to 26.
When a quest or sequence command is supplied,
Frame output as a response from each 5SC22 to 26
It is mu. Therefore, in the data response answer, each SSC
Information and commands held in the status register of
The command written in the register is sent. Sequence Reboot (Each 5SC22-26 transmission) Should be notified to MSC21 under the control of each 5SC22-26
When an event occurs, a sequence record representing the occurrence of the event is
This is a frame that sends port information. The above sequence
Used in conjunction with commands to control laser printers
. respond. However, MSC2X outputs mode set
In this case, each 5SC22-26 does not respond in particular,
On the other hand, each 5SC22-26 sends out a sequence report.
However, the MSC 21 does not respond. The responses that are combined to form each of the above frames
Request bit value, identification code value, and area code
The values are shown in the frame identification table below. (Left below) The frame explained above is for controlling the laser printer.
used in conjunction with each other. Indicates the relationship between the above frames.
Then, when the MSC21 outputs a sequence command,
Each 5SC 22-26 responds with a status answer. Ma
Also, when the MSC21 sends a status request,
Each 5SC22-26 responds with a status answer.
Ru. Similarly, the MSC21 requests information in the mode request.
If requested, each 5SC22-26 can be set as a frame in the mode answer.
I-3 Next, the ID characters that constitute each frame mentioned above and
Detailing the bit structure with the data characters that follow it
do. MS≦ and Goji Kurame's frame Figure 11 (a) shows the characters that make up the sequence command.
FIG. 2 is a format diagram showing a bit configuration of a vector. Seake
The command consists of 3 characters, including an ID key.
The characters are shown in the table above. ID character
(b7
) are set to “0”, and the data character
Bit b6 of data 1 is a confirmation beep) (Q)
It is functioning, and this import confirmation beep) (Q) is a frame.
It is used to synchronize the commands, and is used in combination with status answer.
In total, each 5SC22-26 is from MSC21
Check whether the supplied command was successfully captured.
used for Bit b5 of data character 1
and data character 2 p)b6 is future expansion
bits (x) used at the time, and in this example, each 5 bits
SC22-26 ignore bit (X). therefore
, for data character 1, Bi・So)O(LSB) ~ Bi
command code (CO~C4) is assigned.
In data character 2, bits 0 to 6 (
PO-P6> is assigned to the parameter. Figure 11(b) shows the cache that constitutes the status request.
FIG. 2 is a format diagram showing the bit structure of a character. Ste
The data request consists only of ID characters.
Ru. The bit structure of the ID character is described above, so for details
Omitted. Figure 11(C) shows the configuration of the word type mode set.
FIG. 2 is a format diagram showing the bit structure of a character
. The word type mode set consists of 4 characters.
data character 1 following the ID character.
Bits 0 to 6 are used in the data key to represent mode information.
Set across bits 0 to 6 of character 2.3.
of the memory to which the setting data D (Do to DD) should be written.
Map address M (MO~M) indicating the logical address space
6) Assigned. For example, the identification code S is "0".
”, the setting data p is all 5SC22
~26 are written into the global mode map 35. On the other hand, if the identification code S is set to a value other than "0",
If so, the 5SC22 specified by the identification code S
Write setting data only to ~26. In this case, Eli
The writing destination is local mode Matsu depending on the value of Accord U.
map 34 or global mode map 35. Note that map address M must be set to r7FHj.
As will be explained later, this means that M = "7FH1 is the end."
This is because the end code indicates the end of the frame. Figure 11(d) shows how to configure a string type mode set.
A format diagram showing the bit structure of the characters that
be. In the above word type mode set, one address
One configuration data D is supplied for each
In a mode set of type
Word setting data D can be written. Besides that
data character 1 specifying the map address M.
After , the number of words L (LO to L6) of the setting data is displayed.
followed by data character 2. Therefore, the setting data D is
Represented by data character 3 to data character n
That will happen. Furthermore, for the same reason as mentioned above, the data key
In character 1, map address is set to r7FHj
It will not be done. Figure 11(e) shows the characters that make up the mode request.
FIG. 3 is a format diagram showing the bit configuration of data. moderi
The quest consists of two characters, following the ID character.
bit of data character (LSB)
b6 indicates the map address M for which reading is requested.
are doing. Also in case of mode request, the map address is
SM is never set to 7FHJ.
This is a format diagram showing the bit configuration of the stator.
The answer is an ID character followed by two data keys.
It consists of a total of 3 gear characters. day
Pip) b6 of the data character 1 is the import confirmation pin mentioned above.
) is Q, and the import confirmation beep) Q is set to "1".
commands supplied from the MSC21 remain unchanged.
has not been confirmed and new commands must not be issued.
It shows that there is no. bit b of data character 1
O(LSB) to bit b5 are stored in the command register 32.
Assigned to the code (CO~C4) representing the held command.
This is the code supplied from MSC21.
Was the command correctly captured by the destination 5SC22-26?
This is for the MSC 21 to check whether or not it is. Take the above
Confirmation beep) Q is reset to “0” after executing the command.
The frame with Q=0 is output from 5SC22 to 26.
command code C is cleared after the Data character 20 bit b6 is a frame from SSC.
Frame continuation beep (N) indicating that frame transmission continues.
In MSC21, each 5SC22 to 26
Used to detect the break between frames sent from
be done. Bit bO (LSB) of data character 2 ~
Bit b5 is held in status register 33
Assigned to a code that represents information. Each of the above 5SC
The information held in each of 22 to 26 is one frame.
If it is not possible to send it with the system, operate the continuation bit N above.
The data is transmitted across multiple frames. Figure 11 (g) shows the characters that make up the sequence report.
This is a format diagram showing the bit configuration of the vector.
The performance report consists of three characters. data
Bit bO (LSB) to bit b4 of character 1 are
Report code R (
RO-R4) and the data character
20 bits bO to bit 5 are parameters P (PO-P
5) is assigned. Figure 11(h) shows the configuration of a word type mode answer.
is a format diagram showing the bit structure of a character.
, in the word type mode answer, the ID character
Later, the data character assigned to map address M
assigned to configuration data D representing the vector and mode information.
A combination of two data characters can be repeated up to 4 times.
be done. Each setting data D is 1 word = 14 bits (DO to DD)
The data assigned to these setting data D is
assigned to the exit code after the specified data character.
The data character n appears and ends. As mentioned above
The exit code has a value of 17FHJO, so
, map address M and setting data are r7FHJO values.
I never take it. Figure 11(i) shows the mode answer of the string tie.
Format diagram showing the bit structure of the constituent characters
and corresponds to the string type mode set above.
Ru. For string type mode answers, the ID character
Data character 1 following the vector is assigned to the map address.
data character 2 that follows is set
Represents a fixed data length. Data character 3 ~ data character
The vector n-1 is assigned to the 1st word to the Lth word.
Each word consists of 14 bits (DO~DD).
ing. String type mode answer also has an exit code
Ends with data character n representing (7FH). did
Therefore, the map address M and the setting data have the value r7F.
I can't get HJ. As mentioned above, MSC21 and each 5SC22 to 26 are
Information is exchanged in frame units, and 5SC22-2
6 sends frames only when requested by MSC21.
belief is possible. When sending from 5SC22 to 26
should not send multiple frames if there is a large amount of information to be sent.
When transmitting such multiple frames, MSC2
1 is the end of the call from 5SC22-26 (SSC area)
If the disconnection detection) is not detected, a communication request is sent to another SSC.
I can't put it out. For such SSC break detection
Multiple frames sent from 5SC22-26 to provide
The frame contains information indicating the continuation of the frame.
Irregular frames containing information representing the continuation of such frames
The format is summarized in FIG. In addition, Figure 12
(1) is a status update that does not continue with a sequence report.
The sequence shown in Figure 12 (2)
Shown for comparison with the status answers that follow in the report.
It is. As is clear from Figure 12 (2) to (4)
, when frames are continued, frames other than the last frame are
frame continuation beep) N is set to “1” and the final
The frame has frame bits [0] for SSC break detection.
” or with exit code r7FH]. Step: Yoyo (As mentioned above in the first report, this laser printer is under the control of MSC21.
Machines to which multiple 5SC22 to 26 are respectively assigned
MSC21 has multiple 5SC22
Each 5SC22-26 to organically combine ~26
It is necessary to understand the status of Such SSC
The status of each detailed step is shown in the local mode map 34.
It is maintained as status information. However, MSC2
As the number of SSCs under the control of 1 increases, these details
When I try to read out all detailed status, MSC21's
The load increases and processing efficiency cannot be improved.
stomach. Therefore, each 5SC22 to 26 in this laser printer
are held within each local mode map 34.
Summary status information by summarizing detailed status information
and send the summary status information to each 5SC22-26.
It is held in the status register 33 in the. Assigned to each bit of status register 33
As shown in Figure 13, the information on G5 is
, summary status information indicating that the SSC is initializing is displayed.
Since then, the ``NOT READYJ''
It is called a cut. rNOTREADYJ bit set
The included SSC handles sequence commands and mode sets.
rNOT READYJ bit
is reset after initialization. Next, bit G4 is
r represents the execution status of SSC due to commands and mode changes
It is assigned to the BUSYJ bit and the above execution state
It is reset at the end of . Bits G3 and GO are unused
bits assigned to specific summary status information.
It has not been done. Bit G2 indicates a trouble that cannot be recovered from.
The rFATALJ bit indicates that processing was interrupted due to
The rFATALJ bit is assigned to
It cannot be reset even with SC21, so the serviceman
Processing cannot be resumed without taking action.
stomach. Bit G1 is set to be processed when a recoverable trouble occurs.
The rERRORJ bit is assigned to indicate that the process has been interrupted.
the rERRoR” bit is set.
Also, if the user takes a predetermined action,
It is possible to restart the process. The rERRORJ bit is
If the user takes the above predetermined action, the SSC will reset the
It becomes possible to As explained above, the above summary status information is local
Detailed status information held in the mode map 34
It is formed by summarizing the information. These detailed status information
A part of the local mode map 34 held in
It is called the SSC standard mode map.
Detailed space allocated to the logical address space of the domain map.
The status information is shown in FIG. address r05H”,
"06H", r08HJ, ro9HJ are "E"
RRORJ bit, “FATAL” bit, “BU
SYJ bit, rNOT READYJ bit
Status registers 3 and 3 are respectively provided.
Detailed status information about the summary status information maintained in 3.
Retains status information. These can be used as error registers,
Ital register, Busy register, Not ready register
It's called jista. Note that the address "OCH" is the report model detailed below.
Used for reference to switch between mode and polling mode.
assigned to report mode information. Next, we will explain report mode and polling mode.
I will clarify. Regarding polling mode, see Figures 5 to 7.
As explained above, the MSC21 has a plurality of 5SC22
~26 is connected with the common signal line 5O2SI, and the system
Although the stem wiring is simplified, MSC21 and 5SC
Communication with 22-26 shall be in the form of a response to a communication request.
The disadvantage is that the communication processing speed is low. child
For this, MSC21 and 5SC22 to 26 are individually
In the connection method (hereinafter referred to as the report method), the communication network
Although it becomes more complicated, processing speed can be improved.
There is an advantage. Therefore, the laser printer according to this example is
The printer's SSC has a report mode in the standard mode map.
Allows you to retain information and report within the standard mode map.
If the default mode information is written, the relevant SSC
Communicate with SC in report mode, and conversely communicate report mode information.
If no information has been written, the above-mentioned policy
This means that communication will be done using a communication method. In this way, MSC and
The communication method with the SSC can be selected for each SSC, so for example
For example, as shown in FIG. 15, 5SC1501-15
03 is M via the buffer art multiplexer 1504
Connect to SC1505, ssc i 501 to 1503
and MSCI5O5 communicate using the polling method, and the SSC
1506, 1507 and MSC1505 are report methods
It can also be configured to communicate with in this way,
By mixing reporting and polling methods,
Even if the number of SSCs connected to the MSC increases, the communication processing
It is possible to prevent the processing time from increasing. In particular, laser
Among the SSCs in the printer, those that require high-speed communication processing
If there is no data, set it to polling method and require high-speed communication.
If you use a report method for what you want to do, you can easily
A system with high communication efficiency can be created by making the communication network slightly more complicated.
It can be made into a Furthermore, as shown in Figure 15,
Even when mixing polling and reporting methods
, during initialization performed after power-on, all 5SCs
1501, 1502, 1!503, 1506.1507
By communicating using polling method, frame
Collisions can be prevented. (The following is a margin)
software, but do not explain the software first.
Stand and explain the main parameters and flags
. , J A B A CT niblint operation, etc., system
is a flag indicating whether or not the jib3 is being executed.
If set to “0”, the laser printer system
The entire system is on standby. On the contrary, "
If set to ``1'', any
An SSC instructs units under its control to operate,
Indicates that the operation is incomplete. 5YSWAIT: The entire laser printer system is in its initial stage.
This is a flag indicating whether or not the execution is being executed.
It is set to ``1'' when the initialization starts, and becomes ``0'' when the initialization ends.
will be reset to LOOPF: MSC executes job in main routine.
Timing to execute processing (main loop timing)
This is a flag indicating whether or not the limit has been reached, and job processing is executed.
When the required timing is reached, it is set to "1", and this
If the flag is reset to "0", job processing will not be executed.
Not performed. MS I FS: Multiple S under the management of MSC21
A parameter representing the initialization stage for the SC,
One of the values from "0" to "5" as initialization progresses.
is set to UN r TF: Folder indicating the connection status of the external paper feed unit.
lag, and an external paper feed unit (in the embodiment shown in Figure 2, the feed
) is under the control of the paper unit controller 24.
is detected as connected as part of the printer.
When connected, it is set to “1”, and when it is not connected, it is reset to “0”.
will be played. UN I TS: Sorter (in the embodiment shown in Figure 2, is a sorter)
) is under the control of the laser printer controller 25.
"1" if it is detected that it is connected as part of
It is set to "0" when not connected. ENBF: External paper feed unit selection permission flag,
Can be selected when set to “1”, reset to “0”
If it is marked, it means that it cannot be selected. ENBS: Mode specification permission flag for sorter.
When set to ``1'', specified permission is specified, and when set to ``0''
If it is reset to , it indicates that the specification is not permitted. PANS: Status answer reception flag;
When a data answer is received, it is set to "1". PCYCLE: Indicates the number of times communication requests were sent to all SSCs.
This is management data. PEND: Flag indicating SSC break detection;
Verify that frame continuation bit N is set in rOJ.
or when the exit code [7FH] is detected.
It is set to "1" when P T I M I N G: Polling timing
This flag indicates the occurrence of (tpl to tp4 in FIG. 7).
. CCNT: Counts the number of characters when receiving a frame.
counter value, and the received character is the value of that frame.
Indicates the number of the character. IDS: Identification in the ID characters of a received frame.
This data corresponds to another code S and is subject to communication.
This is a code that identifies the SSC. IDU: An error within the ID character of a received frame.
This data corresponds to Accord U and is subject to communication.
Indicates the logical address space to be accessed within the SSC.
vinegar. FLEN: Supplied from the SSC that is the target of communication.
count data that indicates the number of characters in the frame.
Yes, each time the receive buffer receives a new character.
step forward LENTBL: Separately maintain FLEN for all SSCs
This is the management data that
will be updated once the configuration is complete. PSSC: Management data that specifies the SSC to be polled.
It is ta. TRM L: Characters that make up the frame being transmitted
This flag indicates whether or not the data is in the transmission register 49.
, the character is transferred from the transmit buffer 48 to the transmit register 49.
is set to "1" when the transmission register 49 is transferred.
All bits are transferred from the macro system interface 27 to the macro system interface 27.
When sent, it is reset to "0". LMTF: Number of information that can be sent for one transmission request
This is management data that indicates the maximum value of the limit counter.
will be played. 5TRNG: The received mode answer is string type.
A flag indicating that Figure 16 of the program stored in the MSC shows the overall structure of the program executed in the MSC21.
MSC21 is the main
In addition to routine programs, there are three types of interrupt routine programs.
Execute the program. First, the main routine program
To explain the outline, the power switch of the laser printer is
is turned on and a power switch-on event (EVI) occurs.
Then, the microprocessor 61 (hereinafter referred to as
When explaining the MSC program, it is simply a micro program.
processor 61) is the MSC initialization subroutine program.
Run RAM (SBI). Next, the microprocessor
The server 61 connects the macro system interface 27 and the interface.
to detect the connection status with the SSC that can be connected to the interface.
MSIF processing subroutine program (including processing for
S811) and a judgment step (P1
02) Iteratively executes the loop consisting of
Wait until P102 becomes YES. MSIF processing sub
In the routine program 5BII, the macro system interface
Interrupt handling and menu processing that will be discussed later regarding interface 27
Synchronized with the in-loop, macrosys
connection regarding SSC that can be connected to system interface 27.
The presence or absence of a connection is checked. MSIF processing subroutine
When the program 5B11 ends, step P102
Since the judgment result is yes, the microprocessor 61
checks the flag LOOPF during the main routine.
Timing when job processing should be executed (hereinafter referred to as main routine)
(referred to as P timing) has arrived.
103). If the main loop timing has not yet arrived,
If so, the judgment result in step P103 will be no, so
The microprocessor 61 is a subroutine program 5B.
Return to II and restart the MSIF processing subroutine program.
Then, when the main loop timing is reached, the
Since the judgment result of step P103 is yes, the microphone
The processor 61 is a job processing subroutine program.
Execute (SB12). Job processing subroutine pro
At the end of the program (SB12), the microprocessor
61 returns to subroutine program 5BII, and thereafter,
Consists of subroutine programs 5BII to 5B12
Execute the loop iteratively. Consists of subroutine programs 5BII to 5B12
The interrupt timer 66 of the MSC 21 is
interrupts the microprocessor 61, the timer
An interrupt event (EV2) occurs and the microcontroller
Processor 61 is the main loop timer processing subroutine
Program (5B21) and polling control timer processing
The subroutine program (SB22) is executed sequentially.
, the blue in the main routine program after execution is completed.
Return to the loop consisting of Chin programs 5BII to 5B12.
Turn. From the above subroutine programs 5BII to 5BI2.
During the execution of the loop that
frame is sent to the MSC21, and the reception register of the MSC21
The first character (I
D character) is latched, a receive interrupt event occurs.
(EV3), the microprocessor 61 receives
Execute the buffer processing subroutine program 5B31.
The received frame is temporarily stored in the reception buffer 47.
After holding the subroutine program 5B11 to 5B12
Return to the loop consisting of. On the other hand, the data stored in the transmission register 49 of the MSC 21
The first character is sent from transmit register 49 onto MSCIF.
A transmission interrupt event (EV4) is generated when
The transmission buffer processing routine 41 is executed and the transmission buffer is
The data held in the file 48 is sequentially transferred to the macro system.
After sending to the interface 27, the subroutine program
The program returns to the loop consisting of grams 5Bll to 5B12. As mentioned above, the microprocessor 61 of the MSC21
After executing the MSC initialization subroutine SBI, the subroutine
Repeat the loop consisting of program 5BII to 5B12.
While executing, timer interrupt event) EV2, reception interrupt
Interrupt event E■3 and transmission interrupt event) EV
4 will be dealt with. Figure 17 shows the main routine program executed on the MSC21.
Flowchart a shows the specific execution procedure of the program.
As mentioned above, the main routine program
Occurs due to event EVI. Power on event E
Due to the generation of V1, the microprocessor 61 of MSC21
Step P170 executes initialization of its own internal circuit.
1), then global mode map 4 of MSC21
Initialize standard mode to 4 (step P1702)
. After initial setting of global mode map 44, micro
The processor 61 executes the MSC2 in step P1703.
1 local mode map 45, command register 41
, status register 42, string area and register
Clear the port register 43. Next, the microprocessor 61 reads the status of the MSC 21.
“NOT READ” is set in bit G5 of the task register 42.
Set the SYJ bit. This “NOT READ”
YJ bit is SSC and macro system interface
It is used to detect the presence or absence of connection with 27. Also, MSC
Regarding 21, the initialization subroutine program SBI is executed.
It will be displayed that it is in progress. Next, MSC21's My
The processor 61 sets the 5YSWAIT flag to "1".
The entire system of the laser printer is being initialized after being configured.
, and initialize pssc to “1”.
(Step P1705). Therefore, MSC21
Regarding 5SCI, we will first send a communication request.
. Subsequently, the microprocessor 61 performs step P170.
In step P1705 of the flags etc. mentioned above in B.
All settings are set to ``0'' except those that were initially set to ``1''.
do. Therefore, execution of MSIF processing subroutine 5BII
The parameter MSIFS referenced in this step is
It will be set to "0". The microprocessor 61 then proceeds to step P1707.
Go ahead, set the interrupt timer 66 of the MSC 21, and proceed to the next step.
The event (EV2.EV3.E
V4) Enable interrupts when they occur and execute the main loop
Start. The main loop is connected to the macro system interface.
procedures (SB 171 to 5B174) and job control
Execution move +11N! (P1709-5BI76) and
Of these two types of procedures, the macro
Procedures related to system interfaces are executed constantly.
The procedure for controlling jobs is a macro system installer.
5YSWAIT when the interface preparation is completed.
is reset to 0, it becomes executable (step
P1709). MS IF monitoring subroutine program
In the system SB 171, the microprocessor 61
Initialization of the system interface 27 and the macroshi
between all SSCs that can be connected to the stem interface 27.
to check the connection individually. Subsequent received data
In the processing subroutine program 5B172, each 5SC2
2 to 26 to the reception buffer 47 of the MSC 21.
Analyzes the received frame and executes the transmission request processing subroutine.
Program 5B173 uses the global module of MSC21.
mode map 44, local mode map 45 and frame
Among the information held in the command register 41, 5SC2
Convert the information to be transmitted into frames from 2 to 26 and send it to the transmission buffer.
It is held in the buffer 48. held in the transmission buffer 48
The frame is processed by timer interrupt processing and transmission interrupt processing.
macro system interface 27 by executing the process.
Send. Continued polling control subroutine program 5B174
Now, according to the polling method described above, each 5SC22
~26 to send a communication request to MSC21 and each 5SC22
~26 is realized. In this communication request, the MSC21 requests status
is sent to the target SSC, and in response to this communication request,
The targeted SSC responds with a status answer and sends
Output the required data. On the other hand, the procedure for controlling job execution is 5YSWAIT
is reset to “0” (step P1709
job processing timing L
OOPF is determined to be “1” (in step P1710
If the answer is yes), the process will begin. This way
When the time comes to process the job, the microprocessor
In preparation for future job execution control, the processor 61 immediately
Reset LOOPF to “0” in step PI711.
Ru. Therefore, job execution control (SBI75.5B
176) will be executed at a predetermined cycle. Also,
Procedures that control job execution require multiple job processing subsubs.
Routines (JOBI to JOBn) are executed sequentially
become. The main loop procedure outlined above is explained in detail below.
I will clarify. Figures 18A to 18B are MS1F monitoring subroutine
This is a flowchart diagram showing the steps of the program.
P1801T! MSIF monitoring subroutine program
When 5B171 is started, the microprocessor 61
Check the parameter MS I FS and set the parameter
Check whether MSIFS is set to "0" (
Step 21802). This subroutine program 5B
Immediately after the start of 171, the main routine program (17th
ro” in step P1706 of the figure).
Therefore, the microprocessor 61 is an essential controller.
5SC22, 23, 26 and macro system interface
Check connection to base 27. That is, micropro
The processor 61 receives the step from 5SC22 in step P1803.
Reception notification flag RR indicates whether or not a status answer has been received.
Check. MSIF monitoring subroutine program
Immediately after the execution of RAM 5B171 starts, the transmission request subroutine is still not available.
This is because the program 5B173 is not running.
However, the received data processing subroutine program 5B172
Frames received from the SSC that are subject to communication requests in
analysis has not been performed, and the judgment in step P1802 is
The result will be no (N). The judgment in step P 1802 is no.
In this case, the microprocessor 61 executes step P18.
Step P181 without executing 03 to P1810
Go to 1. As already explained, the parameter MSIFS
is initially set to "0", so step P181
The judgment in step 1 is also no, and steps P1812 to PI31
The process proceeds to step P1815 without executing step P1815. rear
As described above, the microprocessor 61 determines the value to be referenced.
Repeatedly check parameter MSIFS while increasing
However, as mentioned above, the parameter MSIFS is
0", so any subsequent steps
The judgment in step (P1819, 1822) was also no.
The process then proceeds to step P1831. microprocessor 6
1 is step P 1831 Flag JOBA at CZ
Checks whether CT is rOJ, but flag J
OBACT is "0" except during job processing, so
The judgment result of step P1831 is yes, and the micro
The processor 61 sets the flag 5 at step P i 832.
Check whether YSWAIT is "0". flag s
yswAIT is set to "1" in step P1705.
MSIF monitoring subroutine program 5
Immediately after the start of B171, flag 5YSWAI'l'==r
i", and the microprocessor 61 is an optional connection.
Execute check subroutine program 5B182
SSC status checker blue chip without any trouble
Execute program 5B183 to start the main routine program.
return to the program. In this way, you can return to the main routine program.
MSIF monitoring subroutine program SB while repeating
17 i repeatedly and install the required controller (S
SC22, 23, 26) and macro system interface
Check connection to base 27. status request
Status responded from 5SC22-26 to
The reception notification flag RR indicating that the answer has been received is “
When it detects that it is set to “1”, the microcontroller
Rose... Isu 61 is related to steps P1803-1805.
These 5SC22,
23 and 26 are all macro system interfaces 27
It is confirmed that it is connected. In this way, the essential controllers 5SC22, 5S
Macro system interface for C23, 5SC26
The microprocessor asks you to confirm the connection with the interface 27.
The server 61 proceeds to step P1806 and flags UNITF.
is set to a value other than "0", i.e. "1"
Determine whether or not. Flag UNrTF is the main routine
Reset to rOJ at step P 1706 of the program
Since it is, M S I F fi sasaruchi
At the beginning of execution of program 5BI, step P1
The determination result at step 806 becomes no. Therefore, micropro
Processor 61 executes step P1807 without executing step P1807.
At step P 1805, flag UNITS is other than "0"
Determine whether the value is set. MSiF monitoring
At the beginning of execution of subroutine program 5B171, the
Since the judgment result of TP 180B is no, micro
The processor 61 proceeds to step P1810 and sets the parameters.
The required controller
parameter to control the time interval to check the connection of
Set PCYCLE to "0". Above flag UNIT
F and UNITS are optional connection checker routines
At step 58182, 5SC24 and 25 are macro system
Confirm that it is connected to muink-face 27.
It will remain "0" until the
From 5SC 24, 25 until the connection confirmation on 24, 25 is completed.
The response to step P1807. Judgment based on P1809
The process proceeds to step P1810 instead. In this way the initial
Finish the first stage of conversion. After completing step P1810, the microprocessor 61
sets the parameter MSIFS in step P1811.
Check to confirm completion of the first stage of initialization. if
, if the determination result in step P1811 is no, S
SC status check subroutine program S81
After completing step 83, return to the main routine program,
After that, after step P1802, step P1 is again performed.
Check the values of parameters M and S I F S at 811.
Tsuku. Essential Conte 1 Cola S S C22,23
, 26, the parameter MSI
Since FS is set to "1", step P18
The judgment result in step 11 is usually - yes, and the microprocessor
The processor 61 sets the parameter P C at step P18i2.
Compare the value of Y CL E with the limit value n. This limit value n
Connect the required controllers 5SC22, 23, and 26.
Add a predetermined margin to the number of communication requests required for confirmation.
(Step P1812), required
Connecting to the controller S S C22, 23, 26
Initially, when the connection is confirmed, the judgment result of step P1812 is
Since the result is no, the microprocessor 61 executes step P.
18i5. P1819. P1B22. P1831, sub
Main routine via routine program SB 183
Return to program. The above limit value n is a point described in detail later.
In the ring control subroutine program 58174,
Since the step is incremented by "1", eventually step P181 is reached.
The judgment result in step 2 is yes, and the microprocessor 61
Proceeds to step P1813, and connects the SSC to which the connection has been confirmed.
MSC21 frame to supply reset command to
Set the reset command RESET to the command register 41.
to Reset button for SSC with confirmed connection
The command RESET is sent by the transmission request processing subroutine pro- cess.
Program SB 173 and transmit buffer processing routine
The reset command is executed in program SB41.
Functions achieved by the SSC supplied by RESET
Next, the program executed by SSC, which will be described later.
This will be explained in the next section. Like this reset command RE
SET is the SS whose connection was confirmed in step Pl 813
The command register 41 of the MSC 21 for
When set, the microprocessor 61 sets the parameter M
Step SNFS to "2" and end the second stage. In the following step P1815, the microprocessor
61, the parameter MSIFS has the value "2"
Determine whether or not. The judgment result in step P1815 is
, the SSC status check subroutine
After executing SB 183, -1 main routine program
Return to step P1802. Via P1811 C again
Check the value of the parameter MSIFS in step P1815.
To fuck. However, the parameter MSIFS
When the second stage is completed, the value [2J
Since the determination result in step P1815 is
is normally YES, and the microprocessor 61
All verified SSCs hold the reset command RESET.
Step P i 816) to determine whether the
If the result of the judgment is no, the main routine program
After returning to the program, step P1802. Pi811
．． Repeat step P1816 through P4O10.
vinegar. In contrast, the transmission of the reset command RESET is completed.
completed, and the judgment result in step P1816 was YES.
If so, the microprocessor 61 is in its global mode.
Standard mode held in the map 44 (step P1
702) to all SSCs that have been confirmed to be connected.
Set the transmission request flag TR to "1" to supply the
(Step P1817). After this, the microprocessor
The sensor 61 sets the parameter MS I FS to "3".
, completing the third stage. After the completion of the third stage, the microprocessor 61
Check whether the value of the data type IIVISIFS is "3" or not.
If the judgment result is no, the SSC step is executed.
Execution of data check subroutine program 5B183
After the line, return to the main routine program and step
P1802. Step P after pis11 and P4O10
At 1819, the parameter MSIFS is checked again. The parameter MSIFS has a value of “3” in step PI318.
is set, the judgment in step P1819 is passed.
The answer is always yes, and the microprocessor 61
Proceed to step P1820 with the judgment result of
Determine whether the request flag TR has been reset to "0"
do. Standard mode with transmission request flag set to "1"
information must be sent in the same way as the reset command described above.
Request processing subroutine program 5B173 send buffer
Execute the file processing subroutine program 5B41.
is sent to the SSC that is the target of supply, and the
After that, the transmission request flag TR is reset to "0". death
Therefore, if the determination result in step P1820 is no.
If so, information regarding standard mode is still available for the SS to be supplied.
Since it is not sent to C, the microprocessor
The processor 61 is the SSC status check subroutine program.
After executing program 5B183, the main routine program
RAM, and then step P1802. P181
1.P! 815. Steppe PI320 via Pi819
Repeat the judgment. Eventually, the information in the standard mode will be
Information sent to the supplied SSC and placed in standard mode
All the transmission request flags TR attached to are reset to “0”.
When set, the microprocessor 61 sets the parameter M
Set SIFS to "4" (step P1821),
Finish stage 4. After the completion of the fourth stage, the microprocessor 61
Check whether the value of data MSIFS is set to "4" or not.
If the judgment result is no, the SSC stage
End of task check subroutine program SB 183
After completing the program, return to the main routine program and
After that, steps P1802, P1811. P181δ, P
The determination in step P1B22 is repeated through step 1819. Parameter MSIFS is “4” in step P1821
Normally, the determination in step P1822 is
The answer is yes, and the microprocessor 61
With the yes result for step P1822,
Proceed to step P1823. In step P1823
The microprocessor 61 is sent from the 5SC22.
Determine whether the reception status of the frame is stable. child
The reception status is determined by the polling control subroutine described later.
Count data information FLE in program 5B174
Value of management data information LENTBL formed based on N
It is judged by. Count data information FLEN is received
In the data processing subroutine program 5B172
It represents the data length of the received frame, specifically
is the SSC that is the target of communication <Step P1823
status information sent from 5SC22)
represents the amount of Therefore, the micro
The processor 61 has a value of management data information LENTBL.
If the value falls below a certain value, the SSC that is the target of communication will
It is determined that the reception is stable. micro pro
While the judgment result in step P1823 is NO, the processor 61
is SSC status check subroutine program 5
From B183, return to the main routine program and
Step P1802, P1811. P1815. P1
819° P1822 and then step P1823 again.
Repeat the judgment and if the judgment result in step P1823 is negative.
wait until it becomes clear. The judgment result of step P 1823 is
If yes, the microprocessor 61 performs step P
Proceeded to 1824, and the reception status from 5SC23 became stable.
It is determined whether or not this is the case using the same method as in step P1B23. In this way, the microprocessor 61
Respective reception regarding troller 5SC22, 23, 26
Check the status in step P1B23. P1824.
P1825), all required controllers 5SC22,
When the reception status from 23 and 26 becomes stable, step P1
Proceed to 826, and if the flag UNITF is other than "0",
That is, it is determined whether or not it is set to "1". Described later
Option connection check subroutine program S
If B182 is not being executed, the flag is UN.
ITF and UNITS set “0” in step P1706.
” is still set, so the judgment in step P1826 is
The result is a note, and the microprocessor 61 takes a step.
Check the reception status from 5SC24 with P1827
Proceed to step P182B and set the flag UNIT.
Determine whether the SO value is set to a value other than "0"
do. The flag UNITS also has an optional connection chip.
After executing the executable subroutine program S8182,
In the previous example, the initial setting value is "0", so the microprocessor 6
1 without executing step P1829.
Proceed to step P1830. However, as in this example
, 5SC24, 25 are macro system interfaces
27, check the option connection.
As a result of executing subroutine program 5BI82, the file
The lags UNITF and UNITS are each set to “1”.
As a result, step P1826. P1B28's
The judgment result is YES, and the microprocessor 61
Tep P1827. P1829 and S S C2 respectively
4. Check the reception status of 25. Step P1B2
7. If the judgment result of P1829 becomes yes,
The microprocessor 61 proceeds to step P1830,
Set parameter MSIFS to "5", flag 5YSWAI
Set T to "0", respectively. Next, micropro
The processor 61 is the system update subroutine program 5B.
181 (, Fig. 19), and frame from MSC21.
Determine the SSC that will supply the command, etc. However, the first
As shown in FIG. 19, step P1902. P
In 1905, set the flag to UNITF and check with INITS.
If none of these are set to "1"
, immediately start the MSIF monitoring subroutine program SB 1
Returns to 71. These flags UNITF, UNIT
What is S? Option connection check subroutine program
As a result of the execution of
When it is confirmed that it is connected to interface 27,
Since it is set to "1", the system update subroutine jump
For the detailed procedure of program 5B181, check the option connection.
Explained the procedure of subroutine program 5B182.
I will explain later. The microprocessor 61 executes the system update subroutine
MSIF monitoring subroutine jump from program SB 181
When returning to program 5B171, step P1831
and the flag JOBACT is set to "0"
If the judgment result is no, SS
C status check subroutine program 5B18
After executing step 3, the program returns to the main routine program. centre
Lag JOBACT is set to "o" in step P1706.
Therefore, at this stage, the judgment in step P1832 is normally performed.
The answer is yes, and the microprocessor 61 is turned off.
Connection connection check subroutine program 58182
Execute. Option connection check subroutine program SB1
Regarding 82, the detailed procedure is shown in Fig. 20,
In step P2O01, the microprocessor 61
When the procedure starts, the flag UNITF is set to "0".
is set, and the result of that judgment is
, step P2O03 to step P2O0
Proceed to step P2O06 without executing step 5 and execute the flag.
Determine if UNITS is set to “0”.
Ru. However, the flags UNITF and UNITS are 5
Macro system interface 27 of SC24, 25
When the connection with is confirmed, steps P2O04 and
Since it is set to “1” in P2O08, the optional connection
When the continuation check subroutine program is executed for the first time
should be set to "0" for each, and
Therefore, the judgment result of step P2O02 is YES.
Ru. As a result, the microprocessor 61 has the above-mentioned essential functions.
Connection check of controller 5SC22, 23, 26
Macro system interface 27 and
Check the connection with 5SC24 (step P2O0
3). If the judgment result of step P2O03 is no,
For example, 5SC24 is macro system interface 27
Since it is not connected to the microprocessor 61
without executing steps P2O04 and P2O05
Proceed to step P2O06 and flag UNITS is "0"
Determine whether it is set to . On the other hand, as in this embodiment, the 5SC24 is a macro system
If connected to interface 27, step P
The decision in 2003 should be yes, and Mike
Processor 61 answers yes to step P2O03.
Proceed to step P2O04 with the judgment result of 5SC
Set the flag UNITF to "1" to indicate connection confirmation of 24.
Set. The microprocessor 61 again runs the program described above.
In order to repeat the sequence, the parameter MS representing the initialization stage is
Set IFS to the initial value "0" and flag 5YSWAIT to "1".
” respectively. After that, the stator of MSC21
The thread related to 5SC24 held in the thread register 42
Reception notification flag R attached to each status information
Reset R to "0" (step P2O05). In this way, connection check and connection confirmation regarding 5SC24 are performed.
When the post-authentication processing is completed, the microprocessor 61
Perform the same confirmation procedure as for 5SC24 regarding 5SC25.
The process advances to step P2006 to execute the flag UNI
It is determined whether the value of TS is "0" or not. Already flag UN
If ITS is set to “1”, the 5SC25 connection
Since the connection has been confirmed, the microprocessor 61
MS without executing steps P2O07 to P2O09
Return to IF monitoring subroutine program 5B171
. However, as mentioned above, the first option
Executing the connection check subroutine program 58182
At the time of execution, the connection of 5SC25 is unconfirmed, and the flag U is set.
NITS should be set to "0". However,
Therefore, the microprocessor 61 executes step P2O06.
Decide yes and proceed to step P2O07, above required
Connection confirmation procedure for controller 5SC22, 23, 26
Install the macro system for 5SC25 using the same procedure as
Check the connection with the interface 27. If 5SC2
5 is not connected, the microprocessor 61
Step P2O0B. Without executing P2O09, set the flag UNITS to "
0” and run the MSIF monitoring subroutine program.
Return to 5B171. However, as in this example, 5
SC25 connects to macro system interface 27
If so, the judgment result of step P2O07 is YES.
Therefore, based on the results of such judgment,
The processor 61 proceeds to step P2O08 and sets the flag U.
Set NITS to rlJ and display 5SC25 connection confirmation
vinegar. The microprocessor 61 further performs step P2O0.
For the same reason as explained for 4, the parameter MSI
Set FS to “0” and flag 5YSWAIT to “1”
Set each. After that, microprocessor 6
1 proceeds to step P2O09 and sets the stator of MSC21.
is attached to the status information held in the register 42.
Reset the received notification flags R and R to “0”.
. In this way, when the flag operations are completed, the micro
The processor 61 is an MSTF monitoring subroutine program.
Return to SB 171. Return to MSIF monitoring subroutine program 5B171
The microprocessor 61 that has
After executing Tsuku subroutine program 5B183
Further return to the main routine program and set the parameter M
The above program while sequentially incrementing SIFS from "0"
Rerun. In this example, when re-executing, the optional connection
Execution of subroutine program SB 1 B2
Therefore, flags UNITF and UNITS are both set to "1".
Therefore, steps P1806 and P1808
The result of each decision is yes. Therefore, microprop
The processor 61 goes to steps P1807 and P1O09.
5SC24゜25 and macro system interface
Check whether there is any change in the connection status with the bus 27.
do. In these steps P1807 and P1O09, the above 5SC
24, 25 and macro system interface 27
Once the connection is reconfirmed, the microprocessor 61
5SC24,25 in step pisia during stage
Also set the reset command RESET for 5.
Not only SC22, 23゜26 but also 5SC24, 25
1 Noset command RESET is supplied. Also, the third
When the microprocessor 61 reaches the global module
Re-supplying information about the standard mode in the map 44
Since the transmission request flag TR is set to "1" in order to
It is also standard in global mode map 35 of 5SC24,25.
The semi-mode will be set. Next stage 5
Then step P1B26. The judgment result of P1828 is
Since each answer is yes, the microprocessor 61
Also check frame reception stability for 5SC24 and 25.
(Step P1827.P1B29). In this way, the microprocessor 61 becomes the target
I have already explained that SSC was extended to 5SC24 and 25.
Re-execute the procedure and change the parameters in step P1830.
Set the data MSIFS to "5" and set the flag 5YSWAIT to r.
Set each to OJ. After this, the microprocessor
61 is the system update subroutine program 5B181
Start execution. Optional connection checker routine
Before running program SB 182, all
System update subroutine program 5 as described
B181 runs the MSIF monitoring service without actually running.
Returns to routine program 5B171, but reruns
Sometimes the option connection check subroutine jumps to all
Program SB 182 is executed, flags UNITF,
UNITS are each set to “1” (step
P2O04, P2O08). Therefore, the system update
In the new subroutine program 5B181, step P
Since the judgment result of 1902 is yes, micropro
The processor 61 proceeds to step P1903 and uses the external paper feed unit.
Set the knit selection permission flag ENBF to "1"
. After this, the microprocessor 61 controls the paper feed mechanism.
The information held in the global mode map 44 is
Update (step P1904). In the case of this example
, since the sorter is also equipped, step P190b
The judgment result is also yes, and the microprocessor 61
At step P1906, the sorter selection permission flag EN
BS is also set to rlJ. After this, the microprocessor
The server 61 is stored in the global mode map 44 of the MSC21.
Update the information for the sorter held (step
P1907), MSIF monitoring subroutine program 5
Return to B171. In this way, the MSC21 of the laser printer according to this embodiment
is the required controller after its power-on event occurs.
Check the connection for 5SC22, 23, 26
At the same time, the optional connection check subroutine program
From the configuration of the laser printer in Gram 5B182
is the presence of connection for 5SC24, 25 which is not necessarily required.
Check for nothing. This optional connection checkable
The machine program SB 182 is a laser printer system.
The entire system is on standby (JOBACT= rOJ).
, and flag 5YSWAIT is "0", it is always executed.
Ru. Therefore, the above-mentioned power-on i<initial power after
5SC22-26 when the system is on standby
After the connection check is repeated and the laser printer starts up,
Even if a paper feed mechanism or sorter is additionally connected, the connection
The system can be expanded freely.
I can do that. As previously explained with respect to Figure 17, MSIP monitoring
After the subroutine program 5B171, the received data
data processing subroutine program 58172, then send
Request processing subroutine program 5B173, continued
Polling control subroutine program SB 1
? 4 are executed sequentially, but the operation order of the MSC21 is as follows.
Considering that the main loop timer processing subroutine
Program 5B21. Polling control timer processing suble
-chin program 5B22. Polling control subroutine
Program 5B174, transmission request processing subroutine
Program 5B173, received data processing subroutine program
Detailed explanation of each procedure for Gram SB 172
do. Main loop timer-processing subroutine program 5
B21 and polling control timer processing subroutine program
Gram 5B22 is a timer interrupt event as described above.
) Started every time EV2 occurs, the microprocessor
The server 61 is a series of job processing of the main routine program.
Execution cycle of subroutine programs JOBI to JOBn
The count value of the loop timer is incremented to control the
(Step P2101), and then the incremented count
The value is a job processing value indicating when the job processing should be performed.
Determine whether the processing execution timing value has been reached (step
P2102). The judgment result in step P2102 is NO.
In this case, step P2103 is not executed.
Proceed to step P2104. On the other hand, step P2
If the judgment result in step P21 is YES, step P21
Proceed to step 03 and set the flag LOOPF to “1”.
, reset the loop timer to the initial value "0".
. Therefore, the loop timer will be restarted.
Become. In this way, the flag LOOPF is set to "1".
When the main routine program is executed next time, the step
The judgment result of step P1710 is YES, and the job is processed.
Subroutine programs JOBI to JOBn are executed.
Ru. Next, the microprocessor 61 starts the trouble timer.
The count value is incremented (step P2104), and the step
The reception flag PANS is set to “0” in step P2105.
Determine whether or not the Step P2105
If the judgment result is no, steps P2106 to P2
The process advances to step P2108 without executing step P107. On the other hand, if the judgment result in step P2105 is yes,
In this case, the MSC21 determines that the status answer has not been received and
Proceed to step P2106 and count the trouble timer.
Determine whether the value reaches the response error timing value
. The response error timing value is passed from MSC21 to SSC.
maximum time allowed from sending a request frame to receiving a response.
The count value of the trouble timer is
If this response error timing value is exceeded, the microprocessor
Sessa 61 decides yes regarding step P2106
and sets the flag PEND to "1" (step P2
10? ). In this way, the flag PEND is set to "1".
After that, the microprocessor 61 communicates with the SSC.
It is determined that the connection is poor and subsequent polling processing is forcibly stopped.
Polling error processing subroutine program 5
Execute B211. On the other hand, the determination result in step P2106 is no.
In this case, the MSC21 and the SSC from which the communication request was made
Since the communication status is normal, execute step P2107.
The process immediately proceeds to step P210B. In step P2108, the microprocessor 61
increments the count value of the polling timer and
The count value of the switching timer indicates that a communication request is made to the SSC.
Determine whether the desired polling timing has been reached (
Step P2109). Judgment result of step P2109
is no, the microprocessor 61 steps
Start without executing steps P2110 to P2112.
Proceed to step P2113. On the other hand, step P2
If the judgment result of 109 is yes, microprocessor 6
1, the flag PTIMING is set in step P2110.
Determine whether the value is "0". If the judgment result in step P2110 is no, the port has already been
The ring timing has arrived, so the microprocessor
The sensor 61 performs steps P2111 and P2112.
The process proceeds to step P2113 without executing the process. Against this
Then, if the judgment result in step P2110 is YES, the port
This is the first time that the occurrence of ring timing has been detected.
Therefore, the microprocessor 61 goes to step P2111.
Go ahead and set the flag PTIMING to "1" and run
Proceed to step P 2112 and set the next polling timing.
Resetting the polling timer to ``0'' to detect
to restart the polling timer. Next, the microprocessor 61 performs transmission request processing, which will be described later.
Flag T is set to prepare for execution of the processing subroutine 5B173.
Step P2113) Determine whether RML is rOJ or not.
, flag TRML is other than “0”, that is, set to rlJ.
If so, there are characters being sent, so the
The judgment result of step P2113 is no, and the microprop
Processor 61 steps P2114 to P211
Timer interrupt event immediately without running 5
Return to the program that was running at the time of occurrence. to this
On the other hand, if the judgment result in step P2113 is yes
The characters are held in the transmission buffer 48 of the MSC21.
Step P2114)
If the judgment result of step P2114 is no, the microprocessor
The processor 61 immediately executes step P2115.
is executed when timer interrupt event EV2 occurs.
Return to the program you were in. On the other hand, step P
If the determination result of 2114 is yes, the transmit buffer
Transfer the characters in 48 to the transmission register 49 and
Set TRM L to "1" (Step P21
15). After completing step P2115, the control of MSC21
Control is a timer interrupt event) Program when EV2 occurs
return to the program. Next, polling error handling routine program 5B2
The detailed procedure of step 11 will be explained with reference to FIG. Poli
The error processing subroutine program is at step P2.
Once started at 201, the microprocessor 61
is whether flag 5YSWAIT is set to “0” or not.
Step P2202), Step P220
If 2 is no, the laser printer is initializing, so proceed as follows.
Immediately interrupts subsequent processing and returns to the polling control subroutine.
Return to program SB174. Step P220
If the judgment result in step 2 is yes, the microprocessor 61
Execute steps P2203 to P2205 in sequence.
The SSC that caused the response error is 5SC22, 23, 2.
6. If a response error occurs,
The deleted SSC is either 5SC22, 23, or 28.
If so, any of steps P2203 to P2205
Since the judgment result is yes in either case, the microprocessor
The server 6I proceeds to step P2209 and performs predetermined error handling.
Run polling control timer processing subroutine pro
Return to Gram 5B22. In response, a response error occurs.
The resulting SSC is not 5SC22, 23, or 26.
If it is, the microprocessor 61 sets the flag UN.
Check ITF and 5SC24 is macro system input.
Determine whether or not it is connected to interface 27
(Step P2206). 5SC24 is a macro system
If connected to interface 27, step
Since the judgment result of P2206 is YES, the microprop
The processor 61 proceeds to step P2207 and detects a response error.
It is determined whether or not it is 5S024 that caused the problem. vinegar
If the judgment result in step P2207 is YES, the microprop
Processor 61 checks the flag JOBACT and
Determine whether the user printer is executing a job
(Step P2208). Judgment result of step P2208
If the result is no, the microprocessor 61 performs step P2.
Proceed to 209, perform predetermined error handling, and poll
Return to control timer processing subroutine program 5B22
Ru. On the other hand, the judgment result in step P2208 is
If S, - degree macro system interface 27 and
response while waiting even though connection is confirmed
Since an error has occurred, the microprocessor 61
Set the flags UNITF and ENBF to “0”.
, 5SC24 is macro system interface 27?
Treat it as if it were separated from the After this, micro
The processor 61 sets the parameter MSIFS to "0" and sets the parameter MSIFS to "0".
Set Lag 5YSWAIT to "1" and step
P2211), followed by the status register of MSC21.
Reception attached to status information held in data 42
Step P2 to reset the notification flag RR to "0"
212), such a series of treatments (step P22)
10 to step P2212), the MSC21
Execute IF monitoring subroutine program 5B171 again
I decided to check the connection of 5SC24, 25 etc. again.
You will get hit. On the other hand, the above step P220
6. Any judgment result in step P2207
If no, the microprocessor 61 performs step P2.
Proceed to 213 and check the flag UNITS, 5SC2
5 is connected to the macro system interface 27.
It is determined whether or not there is one (step P2213). 5SC
25 is connected to the macro system interface 27.
If so, the judgment result of step P2213 is YES.
Therefore, the microprocessor 61 executes step P221.
5SC25 was the one that proceeded to step 4 and caused a response error.
Determine whether or not. If the judgment result of step P2214 is
If S, the microprocessor 61 sets the flag JOBAC.
Check T to indicate that the laser printer is running a job.
It is determined whether there is one (step P2215). Step
If the result of step P2215 is no, the microprocessor
The server 61 proceeds to step P2216 and performs predetermined error processing.
Executes polling control timer processing subroutine
Return to program 5B22. On the other hand, step P2
If the judgment result of 215 is yes, 5SC25 will
connection with system interface 27 is confirmed.
Even though it is waiting, a response error is occurring.
Therefore, microbrosé sensor 61 sets the flag UNITS.
, set ENBS to "0." and set 5SC25.
is separated from the macro system interface 27.
treated as such. After this, microprocessor 6
1 sets the parameter MSIFS to “0” and the flag S Y
Set SWAIT to "1" in step P.
2211), followed by status register 4 of MSC21.
Receipt notification attached to status information held in 2.
Reset flag RR to "0" (step p22
12). A series of treatments like this (Ste Mbu p. 221)
"7 + Step P2211~Step P221
2>, the MSC21 executes the MSIF monitoring subroutine.
Program 5B171 will be executed again, and 5SC
The connections of 24, 2i5, etc. will also be checked again.
. (Left below) Next, polling control subroutine program SB
The detailed procedure of i74- will be explained with reference to Fig. 23.
do. Polling control subroutine program 5BI74 starts
When started in step P2301, the microprocessor
The processor 61 has the flag PTIMING set to “1”.
Step P2302)
If the judgment result of step P2302 is no, polling time is reached.
The market has not yet arrived (see Figure 7).
The microprocessor 61 is a polling control subroutine.
Immediately interrupt program 58174 and main routine.
Return to program. In contrast, the polling control timer processing described above
Blue dip [1 gram 5B22 step P211
1, the flag PTIMING is set to "1".
If so, the judgment result in step P2302 is yes?
'l, the microprocessor 61 goes to step P2303.
Go ahead and check whether the flag PEND is set to NJ.
to decide. The microprocessor 61 receives received data, which will be described later.
In the data processing subroutine 5B172, the received frame is
If the frame continuation bit N of the constituent characters is “0”
SS when the exit code (7FH) is detected.
C delimiter detection is recognized and the flag PEND is set to “1”.
will be played. However, flag PEND is set to "1".
all characters that make up the frame being received.
data has been imported into MSC21, and other SSCs
It becomes possible to carry out communication requests. However, if the flag PEND is "0". The frame being received contains untransmitted characters (7.
Therefore, the microprocessor 61 executes step P2303.
Determine no by smell and polling control subroutine S
Terminate B174 immediately and restart the main routine program.
I'm back here. On the other hand, the judgment result in step P2303 is negative.
If so, the microprocessor 61 performs step P2304.
Proceed to step 1 and determine whether there is free space in the transmission buffer 48.
, if there is no free space in the transmission buffer 48, the subsequent steps
Stops execution of the step and immediately returns to the main routine program.
return to the program. In this way, in this embodiment, in order to execute a transmission request,
, the polling timing has arrived and the previous transmission
The response to the request has already been completed and the send buffer is empty.
There must be space in 48. If all the above conditions are met, the microprocessor
61 proceeds to step P2305 and sets the flag PT IMI
Reset NG, PEND, and PANS to "0"
followed by the data that constituted the response to the previous communication request.
The value of count data FLEN representing the data length is transferred and managed.
Update the physical data L E NTBL (Step P23
06), In this way, the management data LENTBL is updated.
When updated, the microprocessor 61 outputs count data.
Clear F i, EN and clear information regarding the previous communication request.
Finish post-processing. After this, the microprocessor 61 executes the communication request.
Send status request to MSC21 buffer
is sent to the buffer 48 and held (step P230B>,
, after which the microprocessor 61 communicates with the SSC.
Start the trouble timer to monitor the condition.
(Step P2309). In this way, communication requests
When the preparation is complete, the microprocessor 61
SSC to which a communication request is sent in P2310
Advances the management data PSSC that specifies the next port.
To execute the ring control subroutine program 58174
Be prepared. In step P2308 above, the transmission buffer
Status request held in 48 is a transmission interrupt
Send buffer executed after occurrence of EV 4
In the communication processing subroutine program S841,
Sent to the targeted SSC. When the processing for this communication request is completed in this way,
Microprocessor 961 is macro interface 27
Sequentially sends communication requests to all SSCs connected to
Step P2311) to determine whether or not the
If the judgment result of P2311 is no, -dan main routine
The program returns and the judgment result of step P2311 is
If yes, proceed to step P2312 and do not request communication.
Set the appropriate SSC to ``221'' and try 5SC22 again.
Prepare to send communication requests sequentially. In addition, the microprocessor 61 also uses the parameter PCYCL.
Manage the number of times communication requests are repeated by incrementing E by 1.
, return to the main routine program. Next, the transmission request processing subroutine program 5B173
The detailed procedure 111B will be explained with reference to FIG. send
Request processing subroutine program 5BI73 steps
The microprocessor starts at P2401.
61 sets the management data LMTF in the limit counter.
Step P24.02), transmit buffer 4
Determine whether there is space in B (step P24 (1)
3). If there is no free space in j4 (transmission buffer 11),
Since the judgment result in step P2403 is no, the
It is determined that the Ikurobe Mikocessor 61 cannot respond to the transmission request.
disconnect and immediately return to the main routine program. On the other hand, the judgment result in step P2403 is YES.
Then, the microprocessor 61 proceeds to step P2404.
Mi4 Global mode map 44 and local mode map
Search for map 45 and send to these maps 44.45.
Discovery of information, etc. whose communication request flag TR is set to “1”
Strive to. If the transmission request flag TR is set to "1"
If the searched information etc. is not found, step P2405
The judgment result is no, and the microprocessor 61
Execute steps P2408 to P2409
The process proceeds to step P2410 instead. In contrast, step
If the judgment result of step P2405 is YES, the microprocessor
The processor 61 returns the discovered transmission request flag TR to rOJ.
Set (step P2406) the transmission request flag.
Convert the information marked with TR to a full gnome and send it.
This data is sent to the buffer 48 (step P2407).
After that, the microprocessor 61 goes to step P2409.
decrements the limit counter by 1, and then
Determine whether the value of the data has reached 01 (step
P2409). Step-P2409 judgment result is YES
If so, the microprocessor 61 interrupts further processing.
to immediately return to the main routine program and vice versa.
If the judgment result in step P2409 is no, step P24
Proceed to step 10 and change the local mode map 34 and global mode map.
Regarding all information held in the domain map 35,
Determine whether the search is finished (). Step P241
If the judgment result of 0 is no, the microprocessor 61
Return to step P2403 and find that there is free space in the sending buffer for 4 days.
After that, the transmission buffer 48
or the local mode map 34 and
and check all information on the global mode map 35.
Steps P2403 to P24 until the search is completed.
Repeat the loop consisting of JO. In this way, this implementation
In the example, a limit counter is used to process a single transmission request.
Number of characters sent out during routine program execution
MSC21 does not sacrifice other processing.
It is possible to communicate with 5SC22-26 without
Responses to transmission requests may also be delayed on the SC22-26 side.
There is no such thing. Eventually, the judgment result of step P2410 becomes YES.
, the microprocessor 61 proceeds to step P2411.
It is determined whether there is space in the transmission buffer 48, and the step
If the result of step P2411 is yes, use the command
Request to send all commands held in the register 41
If the flag TR is searched (step P2412), if
A command with the communication request flag TR set to “1” is issued.
If not, the judgment result in step P2413 is NO.
Therefore, the microprocessor 61 executes step P2414.
~Step P2 without executing step P2418
Proceed to 418. In contrast, the determination result of step P2413 described above
is yes, the microprocessor 61
The communication request flag TR is reset to "0" (step P
2414), reset transmission request flag TR attached
Converts the previously sent commands to frames and then sends them to the transmit buffer.
It is sent to the buffer 48 (step P2415). After this
, the microprocessor 61 in step P2416
to decrement the limit counter by 1, and then
It is determined whether the value of has reached "0" (step P2
41? ). If the judgment result of step P2417 is YES
, the microprocessor 61 interrupts subsequent processing and immediately
Return to the main routine program and step in the opposite direction
If the judgment result of P2417 is NO, step P241 B
All the command registers 32 are
Determine whether the search for information is complete. Step
If the judgment result of P2418 is no, the microprocessor
61 returns to step P2411 and stores it in the transmission buffer 48.
Check whether there is space or not, and then use the sending buffer 48.
is no longer able to hold new frames, or the command register
Step 32 until the search is completed for all the information on the star 32.
Loop consisting of step P2411 to step P241B
repeat. Before long, the judgment result of step P24]B is
When it becomes S, the microprocessor 61 sends a transmission request subable.
Exit the main routine program and return to the main routine program.
to return to. In this way, steps P2407 and
The file held in the transmission buffer 48 in step P2415
The frame is a transmit interrupt event).
Passed by executing the buffer processing routine program 5B41.
It is sent to the SSC that is the target of the communication. In this embodiment, execution of the transmission request subroutine program
, the microprocessor 61 first enters the local mode.
Search the domain map 45 and the global mode map 44.
, sends the information to be transmitted to the transmission buffer 48. deer
If there is more space in the transmit buffer 48 after the
The command is sent to the sending buffer 48. Follower, each
The SSC uses local mode prior to supplying commands.
stored in the map 45 and the global mode map 44.
information that is needed to execute the command.
The supply of necessary information is guaranteed. Next, we will explain the received data processing subroutine program.
I will clarify. This received data processing subroutine program S
B172 is received when receive interrupt event EV3 occurs.
by the communication buffer processing subroutine program 5B31.
, the character latched in the receive register 46 is
It is executed after being transferred to the buffer 47, and the detailed procedure is as follows.
It is shown in FIG. In step P2501, this received data processing subroutine
When program 5B172 is started, the microprocessor
The processor 61 first checks the reception buffer 47 of the MSC 21.
The character is latched in the receive buffer 47.
It is determined whether or not it has been set (step P2502). If characters are held in the receive buffer 47,
If not, the determination result of step P2501 will be no.
Therefore, the microprocessor 61 immediately returns to the main routine.
Return to program. On the other hand, step P25
If the judgment result of 02 is yes, the microprocessor
The server 61 proceeds to step P2503, and the count data C
Determine whether CNT is "0" or not. All about flags
As mentioned in the explanation below, the count data CCNT is
Indicates the number of characters already received when receiving a frame.
Therefore, it is set to "0" immediately after receiving a frame.
, therefore, the microprocessor 61 performs step P2
The process proceeds to step 504, where the received character is an ID character.
Determine whether or not. As mentioned above, for each frame
The first character is an ID character, so it is a count date.
The character received even though the data CCNT is “0”
If the data is not an ID character, there is a reception error or the
ID character processed by the received data processing subroutine
Since the microprocessor 61 is considered to be a
interrupts the process and immediately returns to the main routine program.
Return. In contrast, if the received character
If it is a character, the judgment result of step P2504 is YES.
, the microprocessor 61 reads the received ID character.
Kuta's identification code S and area code U are data IDS.
, and IDU, respectively, in the RAM62 of the MSC21.
transfer to the business area (step P2505). After this,
The microprocessor 61 proceeds to step P2506,
Set count data CCNT to "2". Furthermore, this
In the program, the count data CCNT is
1" is not used. After that, the microprocessor 61
returns to the main routine program. The microprocessor 61 runs the main routine program.
Repeatedly execute a series of subroutine programs
when the second character is in receive buffer 4.
7, the received data processing subroutine 5B
The judgment in step P2503 of 172 is no, and my
The processor 61 proceeds to step P2507 and receives
Determines whether the specified character is a data character.
cut off The received character is an ID character
, the judgment result in step P2507 is no, so
The microprocessor 61 proceeds to step P2505.
, the identification code S and area code of the received ID character.
The code U is used as data IDS and IDU in RAM62.
Keep in work area. After that, count data CCN
Set T to "2" (step P2i506) and main
Return to routine program. On the other hand, the received cache
If the character is a data character, step P25
Since the judgment result of 07 is yes, the microprocessor
The sensor 61 increments the count data FLEN by "1".
(Step P250B), and received in Step P2509.
The area code U of the ID character in the frame inside is a frame.
specifies a command register or status register.
Determine whether or not. Area code U is command register
or if a status register is specified, the step
Since the judgment result of P2509 is YES, micropro
Processor 61 is a status/report analysis subroutine.
Execute program 5B251. On the other hand, if the judgment result in step P2509 is no, the
The microprocessor 61 is a mode analysis subroutine 5B2
Execute 52. First, the judgment result of step P2509
is YES and status/report analysis subroutine
The program was started in step P2801.
The case will be explained with reference to FIG. 26. This stay
In the task/report analysis subroutine program, one key
Processing for each Yarakuta is executed. Area code IDU
Microprocessor 61 when set to "3"
to the status/report analysis subroutine program.
As it is clear from the frame identification table above,
In addition, the status/report analysis subroutine program
Analyzing the status answer or sequence report
is executed. The microprocessor 61 first
Check count data CCNT in step P2602.
Check whether the count data CCNT is “3j” or not.
Check. For data character 1, step
In step P2506, count data CCNT is “2”
Since the determination result in step P2602 is
is no, and the microprocessor 61 executes step P2.
Proceed to 603 and microphone the received data character 1.
It is held in a temporary register in the processor 61 (step
P2603), after this, the microprocessor 61
increments the count data CCNT by 1 and reads the received data.
data processing subroutine SB 172, and further main routine
Return to the current program. As is clear from Figure 11 (f) and (g) above,
, status answer and sequence report are both 3 keys.
Since it is composed of Yarakuta, it is the target of communication.
Data character 2 is eventually supplied from the SSC,
It will be latched into the reception buffer 47. data key
Executed after character 2 is latched into the receive buffer 47
In the receive data processing subroutine program that is
As with the data character l, the status/report interpretation
The analysis subroutine program is executed, and this time the step
Since the judgment result of P2602 is YES, micro
The processor 61 proceeds to step P2605 and inputs the data key.
Character 2 is set as a temporary register in the microprocessor 61.
Hold at 2. Next, the microprocessor 61 receives
The received frame is determined by the contents of data characters 1 and 2.
Determine whether the system is a status answer (step
P2606). If the received frame is
If it is a report, the microprocessor 61 performs step P.
2606, it is determined as no, and the process proceeds to step P2607.
Proceed to - and read the data keys held in registers 1 and 2.
Transfer characters 1 and 2 to the report register 37, and
After that, you will receive a response from the SSC that is the target of the communication.
are attached to these data characters 1 and 2 to indicate that
Set the received notification flag RR to "1" (step
P2608). The sequence received in this way
The report is a job processing subroutine program described later.
used in the system. In contrast, the received frame is a status answer.
If so, the judgment result in step P2606 is YES,
The microprocessor 61 proceeds to step P2609.
, First, stop the trouble timer. And the flag
Set PANS to "1". In this way, troubleshooting
The timer is stopped and the flag PANS is set to “1”.
Then, the polling control timer processing subroutine program
Response at step P2106 (Figure 21) of Ram 5B22
It will not be considered an error. After this, micropro
The processor 61 proceeds to step P2610 and registers the command register.
The data key is waiting for confirmation after being sent to the star 41.
Is there a command where the 7th bit Q of character 1 is 1?
Check the information passed during this command and the received status answer.
The last command supplied to the SSC being communicated
(See Figure 11(f))
). If the judgment result in step P2610 is no, the microphone
The processor 61 executes steps P2611 and P2612.
Proceeds to step 22613 without executing, but
If the judgment result of P2610 is YES, the microprocessor
The processor 61 attaches the received frame to step P2611.
SSC where the included command is the target of communication
matches the last command sent to
to decide. If these commands do not match
, the judgment result in step P2611 is no, so the
microprocessor 61. Proceed to step P2612.
The last command supplied to the SSC that is the target of communication
Set the communication request flag TR of the command to ``1j'' and execute the command.
Prepare to resend the code. On the other hand, step P2
If the judgment result of 611 is yes, microprocessor 6
1 is the data character held in temporary registers 1 and 2
controllers 1 and 2 as command register 32 and stator, respectively.
The data is transferred to the memory register 33 and held (step P2).
613). After this, the microprocessor 61 performs communication
To indicate that there has been a response from the targeted SSC.
Therefore, the acceptance mark attached to the received data characters 1 and 2 is
Set the communication notification flag RR to "1" (step P2
614). Subsequently, the microprocessor 61 received
Check frame continuation pick ■・N of data character
to determine whether the frame continues further (step
Step P2615). Step if frame continues
Since the judgment result of P2615 is no, micropro
Processor 61 executes step P2616 without executing step P2616.
Proceed to step P2617 and check the judgment result of step P2615.
If the result is yes, the microprocessor 61 is set to SSC
Set PEN D, which indicates detection of
P2616), count data CCNT is set to “0”.
” to prepare for the next frame reception (step
P2617). After this, the microprocessor 61
Return to in-routine program. The next received frame is the data that constitutes the mode answer.
Refer to Figure 27 for the case where it is a character.
explain. The mode answer is shown in Figure 11 (h), (i
) word types and strings as explained above.
There are different types, each with a different frame configuration.
Ru. Therefore, the mode analysis subroutine program 582
52 is started in step P2701, the microprocessor
The processor 61 checks the count data CCNT.
Is the received character data character 5?
It is determined whether or not (step P2702). ID/Character
After data character 1 is received, data character 1 is received.
, the count data CCNT is set to "2".
(see step P2506 in FIG. 25), and the step
The determination result of step P2702 is no. So, my
The computer processor 61 proceeds to step P2703 and
It is determined whether or not the count data CCNT is "2". As mentioned above, Fu! After starting norm reception, mode analysis is performed first.
The subroutine program 5B252 is executed by
This is when data character 1 is received and the count data is
taCCNT is "2". Therefore, step P27
The judgment result of 03 is yes, and the microprocessor 6
1 proceeds to step P2704, where the received data character
Determine whether or not the vector (map address M) is 7FH.
do. As explained with respect to FIG. 11(h), the map
Forbidden values for address M represent exit codes
(7FH), so in step P2704
If the exit code (7FH) is detected, the microprocessor
The processor 61 proceeds to step P2705 and performs SSC delimitation.
Reset the flag PEND indicating detection of
and reset the count data CCNT to “0”.
(Step P2706). On the other hand, in step P2704
If the judgment result is yes, the output processor 61
Reset lag 5TRNG to "0" Step P27
07), when the count data CCNT is set to "4"
In both cases, the received data character 1 is processed by the microprocessor.
Transfer to the address register of the processor 61 (step P2
708n. After this, the microprocessor 61
represented by data character 1 held in the address register.
Analyze the map address M that is included and find the map address
Determine whether M specifies a string area
(Step P2709). If map address M is
If a ring area is specified, step P270
Since the judgment result of 9 is yes, the microprocessor 61
proceeds to step P2710 and sets flag 5TRNG to “1”.
”. After that, the microprocessor 61
Please reset the count data CCN T to "3".
Step P2711), received data processing subroutine
Return to program SB1?2. In contrast, step
If the judgment result of step P2709 is no, the receiving mode is
Since the sensor is a word type, the microprocessor 61
Step P2710. Execute step P2711
Received data processing subroutine program 5B
Returns to 172. Eventually, when the third character is received, the micro
The processor 61 again runs the mode analysis subroutine program.
Starts execution of program 5B252. This time, the judgment result of Ste Nbu P2703 will be no.
Then, the microprocessor 61 proceeds to step P2712.
Then, it is determined whether the count data is "3" or not. Up
As mentioned above, if the mode answer is a string type, the counter
Although the workpiece data CCNT is set to "3",
If it is a type, it is set to ``4'', so it is
The processor 61 determines that the determination result in step P2712 is YES.
If so, mark data character 2 representing the received data length.
It is transferred to the data counter in its own processor 61 and saved.
Preferably step P2713) and step P2712.
If the result is no, the data representing the first byte of setting data D
The data character 2 is stored in a temporary register in the microprocessor 61.
The data is transferred to Star 1 and held (Step P2714). child
No matter which of these steps you perform, the microphone
The processor 61 sets the count data CCNT to "1".
(step P2715), receive data processing service
Return to routine program 5B172. If the mode answer is a string type, the micro
Processor 61 for received data character 3
Step P2702, Step P2703, Step P
2712, execute step P2714 and save the setting data.
Transfer the data character 3 that represents it to temporary register 1 and save it.
hold Then subsequent data characters are received and again the mode
Assume that the execution of the analysis subroutine program has started.
. This time, the judgment result in step P2702 is YES.
Therefore, the microprocessor 61 goes to step P2716.
advances and places the received data character into temporary register 1.
Local mode with retained data characters
Transfer to map 45 (word type) or string area
and hold it. Next, the microprocessor 61
Check the group 5TRNG and check the mode answer being received.
Step P271 to determine whether it is a word type?
). If the mode answer being received is a word type,
The judgment result in step P2717 is YES, so the
The microprocessor 61 receives the received data character.
Set the communication notification flag RR to notify the mode change.
Step P2718), count data CCNT is set to “2”.
” (Step P2719). On the contrary,
If the judgment result in step P2717 is no, the microprop
Processor 61 does not execute step P2718.
Proceed to step P2719. After that, the microprocessor 61 again sets the flag 5T.
Check the RNG and check if the mode answer being received is
It is determined whether the current type is the same type (step P2720). vinegar
The judgment result of step P2720 is YES (string tie).
), the microprocessor 61 outputs the count data C
Set CNT to "4" again (step P2721),
Data held in the data counter in step P2713
The length is decreased by "1" (step P2722). Sara ζko
, the microprocessor 61 processes the received data characters.
Step P to determine whether or not indicates an exit code.
2723), and if the judgment result is no, the received data is immediately sent.
Return to data processing subroutine program 5B172
. In this way, the mode answer being received is
If the data character is
Each time a data is received, step P2702 and step P
2703. Step P2 via step P2712
714 temporarily holds the data character in register 1.
After that, the data received in step P2716
The character is stored in the data key held in temporary register 1.
[with character] String element by word (2 bytes)
hold at the rear. In contrast, the received mode answer
If is a word type, the microprocessor 61
Step P2702. Step P2703, Step
Steps P2707 to P2709, and further step P2
712 and received in step P2714.
Temporarily hold the character in register 1 and set it to P2716.
The data is transferred word by word to the local mode map 45 and held there. Eventually, when all the data has been received, the data counter will be displayed.
To end the count, step P2722), step P
Since the judgment result of 2723 is yes, micropro
The processor 61 sets the count data CCNT to "2".
, set the reception notification flag RR in step P2724.
), then the exit code received afterwards (address
7FH) is detected in step P2704, and step P2
705. The reception associated with the reception of the mode answer via P2706.
Terminates execution of the communication data processing subroutine program
. Next, run the SSC status check subroutine program.
The detailed procedure of system SB 183 will be explained with reference to Fig. 28.
Ru. In this embodiment, the MSC21 periodically registers the status register.
Read the summary status information of each SSC from the star 42
, if the summary status information indicates an abnormality in the SSC.
, send the mode request to the S to get more details.
Send to SC and get details from its local mode map 34
Read status information. To that end, MSC21
MSIF monitoring subroutine, program 5BI71
SSC status check subroutine program S8
It has 183. Below is SSC status check
The detailed procedure of the subroutine program will be explained. SSCSS status check subroutine program
183 is started in step P2801, the microphone
The processor 61 is the SSC to be checked.
5SC22 (step P2802), if it has already been
A summary of the SSC that has been checked
Whether the reception notification flag RR of the status information is “1” or not
(Step P2803). If received
If the notification flag RR is “0”, judgment in step P2803
The result is no, and microprocessor 6J steps
Proceed to P2809, change the SSC to be checked, and check all
The check for summary status information about the SSC has finished.
It is determined whether or not it has been completed (step P2810). MSC2
1 checks summary status information for all SSCs.
If it has not been completed, the determination result of step P2810 is
If the answer is NO, the microprocessor 61 executes step P28.
Return to step P2803 to step P2810
The judgment result of step P2810
Repeat until you get a yes. If step P
If the judgment result of 2803 is yes, the microprocessor
61 is the general status information for the SSC to be checked.
Reset the reception notification flag RR attached to the notification to “0”.
step P2804), the SS to be checked
Gl (ERRO) of summary status information between
R bit) is set (step
P2805). The judgment result in step P2805 is negative.
If so, the unit under the control of the SSC to be checked.
If the problem is relatively minor and can be corrected by the user,
This indicates that an occurrence has occurred, and the microprocessor 61
Local mode of SSC to be checked
Details related to ERROR bit detected from step 34
Sends a mode request to read status information.
and set it in the communication buffer (step P2806). this
On the other hand, if the judgment result in step P2805 is no,
The above minor trouble has not occurred, so the microprop
Processor 61 does not execute step P2806.
Proceed to step P2807 and check if the
Bit G2 (F
ATAL bit). If FATAL
If the cut is "1", the SS is the target of the check.
An unrecoverable problem has occurred in a unit under the control of C.
Therefore, the microprocessor 61 is FA
in the local mode map 34 related to the TAL bit.
Mode request to access detailed status information
set in the transmission buffer 48 (step P28)
09). In contrast, the determination result in step P2807
If no, the microprocessor 61 executes step P28.
Proceed to step P2809 without executing 0B and check
Change the SSC to be searched. In this way, all S
Checking of summary status information regarding SC is finished.
So, the judgment result of step P2810 is YES.
, the microprocessor 61 runs the MSIF monitoring subroutine.
Return to program 5B171. In this way, the microprocessor 61
bit, or detailed status related to the FATAL bit.
Preparation to read out task information from local mode map 34
do. The mode thus held in the transmission buffer 48
The request is executed by the above-mentioned transmission request processing subroutine program.
System 5B173 and transmission buffer processing subroutine program
SS where trouble occurs when executing Gram SB41
C, and the mode is sent from the SSC where the trouble occurs.
When the answer arrives, the receive buffer processing subroutine
Program SB31 and received data processing subroutine program
Run the program to retrieve detailed status information. child
The detailed status information imported into MSC21 is
Trouble check/link processing subroutine program described later
System 5B291 analyzes the information and takes necessary action.
. As explained in relation to Figure 17, in the main loop
MSIF monitoring subsystem SB 171
~Polling control subroutine program SB 174
When the process is completed, the microprocessor 61 sets the flag 5YS.
Check WAIT72 and the laser printer will print the job.
Determine whether it is processing or waiting. If you are on standby, please
5YSWAIT is set to “1”, so the step
The judgment result of step P1709 is no, and the micropro
The sensor 61 is the MS I FH sensor subroutine program.
Return to 5B171 to execute the program. In contrast,
If 5YSWAiT is “0”, job processing
In order to run the subroutine program, first set the flag
Check whether LOOPF is set to "1"
(Step P 1710). Main loop timer processing subroutine program
and explain

[As mentioned above, since the microprocessor 61 sets the flag L OOP F to "1" at regular time intervals, the determination in step P1710 also becomes YES at regular time intervals, and with such a positive determination result, The microprocessor 61 resets the flag LOOPF to "0" in step P1711, so that after the execution of the job processing subroutine program described below is completed, the job processing subroutine program will not be executed again until a certain time interval has elapsed. do. As shown in FIG. 29, in the job processing subroutine program, first, the flag JOBACT is set to 1"1".
However, since the flag JOBACT is set to "1" in step P2908, normally,
Immediately after starting the job processing subroutine, step P290
The result of judgment 2 is no. If the determination result in step P2902 is NO, the microprocessor 61 proceeds to step 22906 and determines whether there is an instruction regarding printing. If the determination result in step P2906 is NO, the microprocessor 61 determines in step P2909 whether or not the selection of print paper has been supplied from the upper user system, and if the determination result is YES, the selection has been supplied from an external source. It is determined in step P2910 whether a paper unit is to be selected. If step P291
If the determination result of 0 is YES, the flag ENBF is checked to determine whether or not the external paper feed unit can be selected (step P2911). If the external paper feed unit is not selectable (ie, ENBF=1), the microprocessor 61 Change the paper feed port (step P2912). On the other hand, if the determination result in step P2910 is NO, the microprocessor 61 directly proceeds to step P2912, and if the determination result in step P2911 is NO, the microprocessor 61 directly proceeds to the trouble check processing subroutine program 5B291. Further, if the determination result in step P2909 is NO, the microprocessor 61 determines whether or not the sorter mode setting has been supplied from the upper user system.
2913), if the determination result in step P2913 is YES, the microprocessor 61 determines in step P2914 whether the flag ENBS is "1", that is, whether the sorter can be selected. If the judgment result in step P2914 is YES, the microprocessor 61 is set to sorter mode (step P2915), step P29
If the result of the determination in step P2915 is NO, the microprocessor 61 executes the trouble check processing subroutine program 58291 without executing step P2915. On the other hand, if the determination result in step P2913 is NO, the microprocessor 61 receives job data such as print data from the upper user system (step P2916), and executes the trouble check processing subroutine program 5B291. When an instruction regarding printing, such as the operating mode, is supplied from the user system, the determination result in step P2906 becomes YES, so the operating mode, etc. is written in the local mode map 45 and global mode map 44 (step P2907). Of course, at this time, the transmission request flag TR is also set. Thereafter, the microprocessor 61 flags JOBAC.
T is set to "1" and the trouble check processing subroutine program 5B291 is executed. When the flag J OBACT is set to "1" in this way, the determination result in step P2902 becomes YES, and the microprocessor 61 executes the job sequence (
Step P2903). After this, microprocessor 6
1: The above job sequence is completed! If the judgment result in step P2904 is YES, the microprocessor 61 executes step P2904).
Proceed to 2905 and set the flag JOB to display the standby state.
Set ACT to rOJ. After step P2905 is completed, or if the determination result in step P2904 is NO, the microprocessor 61 executes a trouble check processing subroutine program 5B291, which will be described later. The detailed procedure of the trouble check subroutine program 5B291 is shown in FIG.
1, the microprocessor 61 specifies the 5SC 22 as the SSC to be checked (step P 3002), and sends a reception notification of detailed status information regarding the ERROR pin of the SSC to be checked that has already been taken in. It is checked whether flag RR is "1" (step P3003). If the reception notification flag RR is "1", the microprocessor 61 should reset the reception notification flag RR attached to the detailed status information to "0" (step P3004).
, Subsequently, in step P3005, error processing (ERROR processing) is executed based on the detailed status information. In this ERROR process, trouble locations are displayed. After this, the microprocessor 61 proceeds to step P3006. On the other hand, if the reception notification flag RR is "0", the determination result in step P3003 is NO, and the microprocessor 61 directly proceeds to step P3006, in which the FAT
It is determined whether the reception notification flag RR of the detailed status information regarding the AL bit is "1". If the determination result in step P3006 is YES, the microprocessor 61 resets the reception notification flag RR to "0" in step P3007, and then in step P300
Proceed to step 8 to execute FATAL processing. This FATAL
In the process, a display indicating that the problem is an irrecoverable problem is executed. After this, the microprocessor 61 proceeds to step P3009. On the other hand, if the determination result in step P3006 is NO, the microprocessor 61 proceeds to step P3009, changes the SSC to be checked, and determines whether checking of detailed status information has been completed for all SSCs ( Step P3010). If the MSC 21 has not finished checking detailed status information for all SSCs, the determination result in step P3010 is NO, and the microprocessor 61 returns to step P3003 and executes the loop consisting of steps P3003 to P3010 in step P3010. Repeat the process until the result is YES. On the other hand, step P301
If the result of the determination at 0 is YES, checking of detailed status information for all SSCs has been completed, and the microprocessor 61 returns to the job processing subroutine program. (Left space below) SSC bar' The hardware configuration of the air SSC is schematically shown in Figure 6, but the configuration of the transmission buffer 47 and its related circuits is shown in Figure 31.
As shown in the figure. As shown in the figure, the status register 33 (GSTAT-REG), report register 37 (REPO-REG), local mode map 34 (LM-MAP), etc. each store information in frame units, and are stored in the MSC 21 in advance. Addresses of information to be supplied to the MSC, such as retrieved information, are stored in the address buffer 3101 in units of frames. In this way, the information to be transmitted and the addresses where the information is stored can be held in different buffers. In this way, since the address of the memory where information is stored in advance is searched and held, the MSC
In response to a transmission request from , information is read from a register etc. in a short time, converted into a frame, temporarily held in the transmission buffer 3102 in character units, and sent to the macro system interface 27 via the transmission register 3103.
can be sent to. Further, when the transmission requests to all SSCs go through a cycle and a transmission request is received again, the latest information can be supplied to the MSC 21 no matter how many times the information is updated on the way. However, the status register 33 can directly supply information to the transmit buffer 3102. This is to ensure that the status answer is sent out as soon as possible. Note that in this embodiment, the address buffer 31
The number of addresses that can be registered in 01 is limited to a relatively small number. This is to prevent the increase in the number of registered addresses from increasing the number of reports from a specific SSC and the lengthening of the polling cycle. be. Programs Executed by SSC The programs executed by each SSC will be explained below. Before explaining the programs, we will first explain the meanings of typical flags used in the explanation of each program. CCNT: Count data indicating the character position in the received frame;
1 is used when analyzing received data. JOBACT: This flag indicates that the SSC is processing a job. If set to ``1'', it indicates that the job is being processed; if reset to ``0'', it indicates that it is on standby. LOOPF: There is a flag that controls the cycle of the main loop of the SSC. If this flag is set to "1",
Indicates that the time has come to execute job processing. MSIFS: A parameter indicating the execution stage of the MSIF monitoring subroutine program, and is set to any value from "0" to "3". 5TOPF: Forced termination request flag for job control processing. 5YSWAIT: Execution prohibition flag for job control processing. TYPE: A flag indicating the type of mode set,
Set to "1" for string type mode set. Figure 32 of the SSC ROHM is a flowchart showing the schematic structure of the program executed by the SSC.As is clear from the figure, the SSC is a main routine program that starts execution when the power is turned on. and three mutually independent interrupt programs. First, when the power is turned on, a power-on event occurs and the EV
I, the microprocessor 61 (hereinafter referred to as
The microprocessor 61) executes the SSC initialization subroutine program 5B501, which will be described in detail later, and then executes the MSIF processing subroutine program 5B5.
Execute 02. The procedure of this MSIF processing subroutine program 58502 will also be described in detail later. MSI
Determining completion of the F processing subroutine program (step P3201), the microprocessor 61 determines the arrival of main loop timing indicating that the job processing subroutine can be executed (step P3202). When the arrival of the main loop timing is detected, the microprocessor 61 The processing subroutine program 5B503 is executed. Such MSIF
When the interrupt timer 66 of each SSC finishes timing for a predetermined period during execution of the loop consisting of the processing subroutine program 5B502 to job processing subroutine program 5B503, a timer interrupt event EV12 is generated.
occurs, the microprocessor 61 first executes the main loop timer processing subroutine program 5B504 to control the occurrence of the main loop timing, and then executes the job control timer processing subroutine program 5B506 to control the occurrence of the timer interrupt event. Return to the main routine program step. A reception interrupt event (EV13) occurs when the reception register of the SSC latches one character, and a reception data processing subroutine program 5B506 including frame analysis and sending an answer to the MSC is executed. On the other hand, when the first character in the transmission register 3103 of the SSC is sent to the macro system interface 27, a transmission interrupt event) EV14 occurs, and the transmission data processing subroutine program 5B507 is executed by the generation of the transmission interrupt event) EV14. . In this transmission data processing subroutine program 5B507, SS
The frames in the transmission buffer 3102 of C are sequentially sent to the macro system interface 27. That’s all, SSC
Having explained the outline of the programs executed in , the detailed steps of each program will be explained below. FIG. 33 is a flowchart showing the detailed procedure of the main routine program. The main routine program is started upon the occurrence of the power-on event EV1 as described above, and first steps to initialize the internal circuit of the microprocessor 61. P3302), and then clears the local mode map 34, global mode map 35, and command register 32, respectively (step P3302).
303). Thereafter, the microprocessor 61 reads bit 05 (NOT READY) of the status register 33.
bit) is set to "1" to indicate that initialization is being executed. Next, the flag 5YSWAIT is set to "1" to prohibit execution of job control processing in step P330.
5), MS IF monitoring subroutine program 5B51 that sets the parameter MSIFS to "0" and continues
1 is prepared for execution (step P3306). Furthermore,
Microprocessor 61 sets the main loop timer in step P3307 to enable main loop timing to occur. When such a series of preparations is completed, the microprocessor 61 sets an interrupt enable flag to enable the various interrupts described above (step P3308). In this way, SSC initialization subroutine program 5
When B501 is completed, the microprocessor 61
The IP monitoring subroutine program 5B511 and the transmission request processing subroutine program SB512 are sequentially executed. MSIF monitoring subroutine program 5B511 is the third
4, the microprocessor 61 of the SSC receives a reset command (from the MSC 21 in step P3401).
RESET) has already been supplied (see step P1813 of the MSIF monitoring subroutine program shown in FIG.
Determine whether S is set to "1". The parameter MSIFS is set to “O” in step P3306.
Since the determination result in step P3407 is initially set to "No", the microprocessor 61 proceeds to step P3411, where the parameter MSIFS is set to "
2". In step P3411 as well, the determination result is initially no, so the microprocessor 61 immediately returns to the main routine program. Eventually, when the reset command is supplied from the MSC 21, the judgment result in step P3401 becomes YES, so the microprocessor 61 proceeds to step P3402 and sets the capture confirmation pin (Q) attached to the reset command to "0". Reset. As a result, MSC21
will be able to send the following commands: Note that since the status answer to the reset command is performed in the received data processing subroutine program 5B506, the main routine program does not process the status answer. Next, the microprocessor 61 sets the 65 bit of the status register to "1" (step P3403), and then sets the flag 5YSVi/AIT.
is “0” (step P 340
4). Flag 5YSVv'AIT is set at step P3305.
Since it is set to "1" in step P3404 when the MSIP monitoring subroutine program is not completed.
The result of this decision is usually no. Therefore, the microprocessor 61 proceeds to step P3406 without executing step P3405. However, already SSC
If the reset command is received during operation, flag 5YSWAIT is reset to "0", so
The microprocessor 61 sets the flag 5TOPF to "1" in step P3405 to forcibly stop the job processing, and then proceeds to step P3406. Flag 5T
OPF is reset to "0" when the interruption of job processing ends. In step P3406, the parameter MSiFS is set to “1”.
", and in the following step P3407 the parameter M
Determine whether SIFS is "1". If the parameter MSIFS is "0", the microprocessor 61 determines no in step P3407, and returns to the main routine program via step P3411. On the other hand, if the parameter MSIFS is "1", the determination result in step P3407 is YES, so the microprocessor 61 determines whether the flag 5TOPF is "0", and if the determination result is NO, the microprocessor 61 61 returns to the main routine program via step P341. On the other hand, if flag 5TOPF is reset to "0" after job processing is temporarily interrupted, flag 5
If TOPF is "0", the microprocessor 61 detects this in step P3408 and initializes the local mode map 34 based on the determination result (YES). When the local mode map 34 is initialized in this way, the microprocessor 61 sets the information transmission request flag TR held in the local mode map 34 to "1" and notifies the MSC 21 of the contents. Make preparations (step P3409). The information on which the transmission request flag TR is set in this way is obtained by executing the transmission request processing subroutine program 5B512 and the transmission data processing subroutine program 5B507, which will be described later.
It is sent to SC21. After this, the microprocessor 61 performs step P3410.
Set flags 5YSWAIT and MSIFS to "1" each.
, is set to "2", and the process proceeds to step P3411, where it is determined whether the parameter MSIFS is set to "2". If the judgment result in step P3411 is NO, the microprocessor 61 returns to the main routine program, and if the judgment result is YES, the process proceeds to step P3412, where all the information in the local mode map 34 is It is determined whether or not it has been sent to C21. If the determination result in step P3412 is NO, the microprocessor 61 returns to the main routine program,
If the judgment result is YES, proceed to step P3413, set the parameter MSIFS to "3", and set the 65 bit (NOT READY) of the status register.
is reset to "0". After this, the microprocessor 61 resets the flag 5YSWAIT to "0" (
Step P3414) Return to the main routine program. However, until all the information held in the local mode map 34 is sent to the MSC 21, the flag 5YSWAIT will remain at "1" and execution of job processing will be prohibited. Next, the procedure of the transmission request processing subroutine program 5B512 will be explained with reference to FIG. The transmission request processing subroutine program 5B512 is MS
Immediately after returning to the main routine program from IF monitoring subroutine 5Bi511, step P3501
First, it is determined whether or not there is space in the address buffer 3101 (step P3502). If there is no space in the address buffer 3101, the microprocessor 61 determines no in step P3502 and immediately returns to the main routine program; if there is space, the microprocessor 61 determines yes in step P3502 and stores the address in the local mode map 34. The transmission request beep (TR) attached to the information is searched (step P3503). If a specific local mode map 34 has a transmission request flag T
If there is no information set to "1" in R, the microprocessor 61 determines that step P3504 is NO and proceeds to step P3508; on the other hand, if the determination result is YES, the transmission request flag TR is set to "1". It is determined whether the address of the set information has already been registered in the address buffer 3101 (step P3505). If the address has already been registered in the address buffer 3101, the microprocessor 61 executes step P3.
505 and proceeds to step P3507. Conversely, if the address has not been registered, the microprocessor 61 proceeds to step P3506 and registers the address in the address buffer 3101. In this way, the microprocessor 61 that has proceeded to step P3507 determines whether or not the address registration of information for which the transmission request flag TR is set has been completed for all local mode maps 34, and if the result of the determination is no, the process returns to step P3503. If the determination result is YES, the process advances to step P350B and it is again determined whether or not there is space in the address buffer 3101. If the judgment result in step P3508 is NO, return to the main routine program; on the other hand, if the judgment result is YES, step P350
Proceed to step 9. The microprocessor 61 performs step P350.
At step 9, it is determined whether there is a report to be sent to the MSC 21. If the judgment result in step P3509 is NO, the process proceeds to step P3512; on the other hand, if the judgment result is YES, the microprocessor 61 checks in step P3510 whether the address of the memory storing the report is not registered in the address buffer 3101. Decide whether or not. If the address is already registered,
The microprocessor 61 proceeds to step P3512,
On the other hand, if it has not been registered, the address is registered in the address buffer 3101 in step P3511, and then the process advances to step P3512. In step P3512, first, the address rOcHJ of the local mode map 34 (see FIG. 14) is
If it is not the report mode, it immediately returns to the main routine program, and if it is the report mode, it is determined whether there is a status to be sent to the MSC 12 (step P351).
3). If there is no status to be sent to the MSC21, it immediately returns to the main routine program, and if
If there is such a status, the process advances to step P3514, and it is determined whether the memory address storing the status is not registered in the address buffer 3101. If the address has already been registered, the program immediately returns to the main routine program; on the other hand, if the address has not been registered, the address is registered in the address buffer 3101 and then the program returns to the main routine program. Returning again to FIG. 33, the explanation of the procedure of the main routine program will be continued. When the transmission request processing subroutine program 5B512 returns to the main routine program, the microprocessor 61 checks the flag 5YSWAIT and determines whether the flag 5YSWAIT has been reset to "0" (step P3309).
. If the flag 5YSWAIT remains set to "1", the initialization is still being executed, so the microprocessor 61 executes the MS IF monitoring subroutine program 5B511 again. On the other hand, if the flag 5YSWAIT has already been reset to "0", the microprocessor 61 sets the flag LOOPF to "1".
In step P331, it is determined whether or not the
0), if the judgment result is no, the main loop timing has not yet arrived, so the MS IF monitoring subroutine program 5B511 is executed again and the main loop timing is waited for. If the main loop timing arrives, the determination result in step P3310 is YES, so the microprocessor 61 executes step P33.
The process proceeds to step 11, where the flag LOOPF is reset to "0" and execution of job processing is prohibited until the next main loop timing arrives. After executing step P3311, the microprocessor 61
executes a series of job processes to form a predetermined image on print paper (steps P3312 to
Step P3313). In this way, the microprocessor 61 repeatedly executes a loop consisting of subroutine programs 5B511 to P3313 in the main routine program. Next, when the main loop timer processing subroutine program 5B504 is started, with reference to FIG.
The microprocessor 61 increments the value of the main loop timer in step P3601, and determines whether the incremented value of the main loop timer has reached a value indicating the arrival of the main loop timing (step P3602). If the determination result in step P3602 is NO, the microprocessor 61 proceeds to step P3604, and conversely, if the determination result is YES, the microprocessor 61 sets the flag LOOPF to "1".
'' to enable job processing, set the initial value to the main loop timer, and measure the time interval until the main loop timing arrives again (step P3603). Next, the microprocessor 61 executes sequence timer processing in step P3604, and then determines whether or not it is in report mode (step P3605).
. If the microprocessor 61 is not in the report mode, the microprocessor 61 proceeds to step P3611; on the other hand, if the microprocessor 61 is in the report mode, the microprocessor 61 proceeds to step P3606 and determines whether the address buffer 3101 has address information of data to be transmitted. If address buffer 3101
If the above address information is not present in the microprocessor 6
1, the process immediately proceeds to step P3611, and conversely, if there is address information in the address buffer 3101, the process proceeds to step P3611.
Proceeding to step 3607, it is determined whether there is data in the transmission buffer 3102. If there is no data in the transmission buffer 3102, the microprocessor 61 performs step P3.
Proceed to step 611, and if there is data, proceed to step P360
Proceeding to step 8, the information held in the memory location specified by the address in the address buffer 3101 (hereinafter referred to as the designated address) is converted into a frame and sent to the transmission buffer 31.
Transfer to 02. In this way, the transmit buffer 3102
The information held within the transmit interrupt event) EV14
When the transmission data processing subroutine program 5B occurs,
Macro system interface 2 by executing 507
Sent on 7th. After transferring the information to the transmission buffer 3102 in this way, the microprocessor 61 deletes the specified address from the address buffer 3101 (step P3609), and deletes the transmission request attached to the information held at the specified address. Reset bit TR to "0". When the preparation for transmitting the information specified by the address held in the address buffer 3101 is completed in this way, the microprocessor 61 proceeds to step P3611 and determines whether or not the information is being transmitted. If there is information being sent, the microprocessor 61 immediately returns to the program that was being executed when the timer interrupt event occurred; on the other hand, if there is no information being sent, it is determined whether there is space in the sending buffer 3102. (Step P3612). If information is still held in the transmit buffer 3102, the microprocessor 61
immediately returns to the program at the time when the timer interrupt event occurred, and if there is space in the transmission buffer 3102, transfers the information scheduled to be transmitted to the transmission buffer 48 (step P3).
613). Thereafter, the microprocessor 61 returns to the program at the time the timer interrupt event occurred. Next, the received data processing subroutine program 5B50
6 will be explained in detail with reference to FIG. When a receive interrupt event occurs, the microprocessor 61
reads the character from the reception register 46 (step P3701) and determines whether a reception error has occurred (
Step P3702). If a reception error has occurred, the microprocessor 61 performs step P3703.
If no reception error occurs, the process proceeds to step P3704 without executing step P3703, and the count data CCNT is set to "0".
Determine whether or not. As already explained, at the start of frame reception, the count data CCNT is rOJ
Therefore, the judgment result of step P3704 is YES, and the microprocessor 61 confirms that the received character is I.
Determine whether or not it is a D character (step P37
05). If it is determined that the received character is not an ID character even though the count data CCNT is "0", the microprocessor 61 will not proceed with the subsequent processing since it may have occurred due to abnormal force during communication. Abort and immediately return to the program that was running when the receive interrupt event occurred. On the other hand, step P37
If the character received at step 05 is determined to be an ID character, the microprocessor 61 stores the identification code and area code of the ID character as data I.
Import as DS, IDU and count data CC
NT is set to "2" (step P3706). In this way, the data IDS. Once the IDU is formed, the microprocessor 61 determines whether the received character is intended for a specific SSC based on the data IDS (step P3707).
). If the judgment result in step P3707 is no,
Since the frame being received is commonly transmitted to all SSCs from the global mode map 35 of the MSC 21,
Microprocessor 61 immediately returns to the program that was being executed when the receive interrupt event occurred. On the other hand, if the judgment result in step P3707 is YES,
In step P, the microprocessor 61 determines whether or not the received character was sent to itself.
370B), if the judgment result is YES, the program immediately returns to the one that was being executed when the reception interrupt occurred. On the other hand, if the received character targets another SSC, the microprocessor 61 performs step P3.
In step 709, the count data is initialized to "0" in preparation for receiving the frame targeted for transmission, and then the program returns to the program that was being executed when the reception interrupt event occurred. If the received frame targets itself and is a status request (step P3710), 1
Since it is a character frame, status/command processing subroutine 5B521 is executed. On the other hand, if the determination result in step P3704 is NO, the microprocessor 61 performs step P371.
Step 1 determines whether the received character is a data character. If the determination result in step P3711 is NO, the received character is an ID character, so the microprocessor 61 returns to step P370.
Proceed to step 6 and perform the steps P3706 to P371 above.
Execute 0. On the other hand, if the received character is a data character, the microprocessor 61 determines whether the frame being received is a mode set or a mode request (step P3712). If the determination result in step P3712 is NO, the frame being received is a sequence command, so the microprocessor 6
1 executes the status/command processing subroutine program 58521. Conversely, if the determination result in step P3712 is YES, the microprocessor 61 determines in step P3713 whether or not the frame being received is a mode request. If the frame being received is a mode request, the determination result in step P3713 is YES, and the microprocessor 61 executes the mode request processing subroutine program 5B523. On the other hand, if the determination result in step P3713 is NO, the frame being received is a mode set, so the microprocessor 61 executes the mode set processing subroutine program 5B522. The procedures of these three subroutine programs will be detailed below. First, the detailed procedure of the status/command processing subroutine program 5B521 will be explained with reference to FIG. The status/command processing subroutine program is started in step P3801, and the microprocessor 6
1 determines whether the frame being received is a status request in step P3802. If the frame being received is a sequence command, step P
The result of the determination at step 3802 is NO, and the microprocessor 61 determines whether the count data CCNT is "3" (step P3803). If data character 1 following the ID character is received, the count data is "1", so the judgment result in step P3803 is NO, and the microprocessor 61 transfers the received data character to temporary register 1. , the count data is set to "3" (step P3804), and the process returns to the reception date/event processing subroutine program 5B506. On the other hand, when data character 2 is received, count data CCN
Since T is set to "3" in step P3804, the microprocessor 61 determines yes in step P3803 and proceeds to step P3805, where the previously supplied command is supplied from the command register 32 to the microprocessor 61 and processed. Determine whether or not it has been executed. If the processing related to the previous command has already been executed (the capture confirmation signal Q has been reset to "0"), the judgment result in step P3805 is YES, so the microprocessor 61 proceeds to step P3806. The received data character 2 along with the data character l held in the temporary register are transferred to the command register 3.
2 and hold. On the other hand, step P38
If the determination result in step P3806 is NO, the microprocessor 61 directly executes step P without executing step P3806.
Proceed to 3807. Subsequently, the microprocessor 61 determines whether or not it is in the report mode in step P3807,
If the determination result in step P3807 is no, the microprocessor 61 proceeds to step P3812. On the other hand, if the determination result in step P3807 is YES, the microprocessor 61 sets the information transmission request flag held in the status register 33 to "1" (step P3808), and then the address buffer 3101 is filled with free space. Determine whether there is one (Step P 3809)
, if there is no space in the address buffer 3101,
The microprocessor 61 proceeds to step P3812,
If there is space in the address buffer 3101, step P
At step 3808, the address of the information whose transmission request flag is set to "1" is registered (step P3810), and the process advances to step P3812. On the other hand, if the determination result in step P3802 is YES, the microprocessor 61 determines whether or not it is in polling mode (step P3811), and if the determination result is NO, the process proceeds to step P380B. On the other hand, if the determination result in step P3811 is YES, the microprocessor 61 executes the polling answer processing subroutine program 5B531 and proceeds to step P3812. In step P3812, the count data CCNT is
0'' to prepare for the next execution of the received data processing subroutine program, and then return to the received data processing subroutine program. The above polling answer processing subroutine program 5B
The detailed procedure of step P3901 is shown in FIG. 39, and this subroutine program 5B531 starts at step P3901. The microprocessor 61 performs step P39.
Proceeding to step 02, the information transmission request flag TR held in the status register 33 is reset. continue,
Step P3902: Determine whether the address of the information to be transmitted is registered in the address buffer 3101.
), if the address is not registered, the microprocessor 61 sends a status answer with the frame continuation bit N of "0" to the transmission buffer 48 and prepares for its transmission (step P3904). In this way, when preparation for transmission is completed for the status answer whose frame continuation bit N is "0", the microprocessor 61 proceeds to step P3915. On the other hand, if the address of the information to be transmitted is registered in the address buffer 3101 and the determination result in step P3903 is YES, the microprocessor 61 sends a status answer with the frame continuation bit N set to "1". Supply it to the transmission buffer 3102 to prepare for transmission,
(Step P3905), then Step P390
In step 6, it is determined whether the address of the sequence report is registered in the address buffer 3101. if,
If the sequence report address is registered,
The address of the sequence report is stored in address buffer 3.
101, and reset the transmission request flag TR attached to REVO-1 information held in the report register 37 (step P3907). Thereafter, the microprocessor 61 determines whether the address holding the information to be transmitted is registered in the address buffer 3101 (step P3908).
If the determination result in step P3908 is NO, a sequence report with frame continuation bit N of "0" is supplied to the transmission buffer 3102 to prepare for transmission.Step P390
9) On the other hand, if the determination result in step P3908 is YES, a sequence report with the frame continuation bit N of "1" is supplied to the transmission buffer 3102 to prepare for transmission (step P3910). Next, the microprocessor 61 uses the address buffer 31
01 to determine whether the address of the string type mode answer to be transmitted is registered (step P3911). If it is registered, the microprocessor 61 deletes the address from the address buffer 3101, and the transmission request bit T attached to the information constituting the mode answer.
Reset R (step P3912). After that,
The microprocessor 61 supplies the string type mode answer to the transmission buffer 48 to hold it therein, and completes preparation for transmission. Thereafter, the microprocessor 61 sends the end code to the transmission buffer 3102 and causes it to be held there. In this manner, in this embodiment, an end code is added to a string type mode answer before all its data characters are held in the transmission buffer 3102. This is because string type mode answers usually consist of a large number of data characters, so if all of them were processed at the same time, it would take a long time for one response, slowing down communication with other SSCs. be. On the other hand, if the determination result in step P3911 is NO, the microprocessor 61 uses the address buffer 311
1 to determine whether the address of the word type mode answer is registered or not. If such an address is unregistered, the microprocessor 61 immediately proceeds to step P3915; If the mode answer is registered, first, the address is deleted from the address buffer 3101, and the transmission request bit TR attached to the information constituting the word type mode answer is reset (step P3917). Thereafter, the microprocessor 61 sends the word type mode answer to the transmission buffer 3102 and holds it, and then determines whether the address of another word type mode answer is registered in the address buffer 3101. (Step P3919). If another address is registered (that is, if the determination result is NO), the microprocessor 61 returns to step P3917 again and continues steps P3917 to P3919 until the determination result in step P3919 becomes YES. After repeatedly executing the loop, if the judgment result in step P3919 is YES, the microprocessor 61 proceeds to step P3914 and sends the end code to the transmission buffer 3102.
supply to. In this way, the frame held in the transmission buffer 3102 is transferred one character at a time from the transmission buffer 3102 to the transmission register 3103 in step P3915, and the process advances to step P3812 of the status/command processing subroutine program 5B521. In this way, the characters held in the transmission register 3103 are sent to the MSC 21 by executing the transmission data processing subroutine program 5B507. Next, mode set processing subroutine program 5B5
The procedure of step 22 will be explained with reference to FIG. When the mode set processing subroutine program 5B522 is started in step P4001, the microprocessor 61 first checks the count data CCNT and determines whether the value of the count data CCNT is "5" (step P4002). ). data character 1
When receiving , the count data CCNT is normally set to "2", so the determination result in step P4002 is NO. Therefore, the microprocessor 61 proceeds to step P4003 and again inputs the count data CCNT.
is checked to determine whether the value is "2" or not. When data character 1 is received, count data C
CNT should have been set to "2" as described above, and the determination result in step P4003 is YES. In the case of mode set, data character 1 is assigned to map address M, so the microprocessor 61 proceeds to step P4004 and transfers map address M to the address register to hold it. Next, the count data CCNT is set to "4" and the flag TYPE is reset (step P4005). Next, step P
It is determined whether the string area 36 is specified by referring to the map address held in the address register in step P4004 (step P4006). If the determination result in step P4006 is YES, the microprocessor 61 proceeds to step P4007 and stores the count data C.
Set CNT to "3" and set flag TYPE to "
1'' and returns to the received data processing subroutine program 5B506. On the other hand, step P
If the judgment result of 4006 is no, microprocessor 6
1 returns to the received data processing subroutine program 5B506 without executing step P4007. When data character 2 is eventually received and the mode set processing subroutine program 5B522 starts, step P4002. Since the determination result in step P4003 is no, the microprocessor 61 proceeds to step P4008, and the count data CCNT is
3". As described above, step P40
As a result of the processing from step P4007 to step P4007, in the string type mode set, the count data CCNT becomes "
3" and "4" for a word type mode set, so if the frame being received is a string type mode set, the judgment result in step P400B is YES, and if a word type mode set, the judgment result is YES. The answer will be no. If the frame being received is a string type mode set, data character 2 represents the data length, so the microprocessor 61 transfers data character 2 to the data counter and holds it (step P4009). After this, the microprocessor 61 proceeds to step P4011. On the other hand, if the frame being received is a word type mode set, data character 2 is the first byte of the setting data, so the microprocessor 61 holds the received data character 1 in temporary register 1 (step P4010) and counts The data CCNT is incremented by "1" (step P4
011). Regardless of the type, the microprocessor 61 returns to the received data processing subroutine program 5B506 after executing step P4011. Eventually, when data character 3 is received, in the case of string type mode set, count data CC
Since NT is "4", step P4002, step P4003. The result of the determination in step P4008 is NO, and after data character 3 is temporarily held in the register in step P4010, the data counter CCNT is incremented by "1" and the process returns to the received data processing subroutine program 5B506. On the other hand, in the case of a word type mode set and in the case of a string type mode set in which data character 4 has been received, the determination result in step P4002 is YES, so the microprocessor 61 uses the received data character and The previously received data character held in temporary register 1 is held as setting data (step P4012). In the process of step P4012, a word type mode set is held in the local mode map 34, but a string type mode set is set in the string area. Next, the microprocessor 61 determines whether the frame being received is of the string type using the flag TY.
The judgment is made with reference to the PE, and if the judgment result is no (that is, word type), the reception is completed with the reception of data character 3, so the process proceeds to step P4017, and the count data CCNT is initialized to "0". At the same time,
The reception notification flag RR of the setting data stored in the local mode map 34 is set to "1". On the contrary,
If the mode set being received is a string type, the judgment result in step P4013 is YES, the microprocessor 61 sets the count data to "4" (step P4014), and decreases the data length value held in the data counter. (Step P4015). As a result of reducing the data length value in this way, it is determined in step P4016 whether all the setting data has been received, and if the determination result in step P401B is no, the process immediately proceeds to the received data processing subroutine program 5B506. On the other hand, if the judgment result in step P4016 is YES, the microprocessor 61 returns the count data CCN.
Set T to "0" and set the reception notification flag RR of the received configuration data to "1". Thereafter, the microprocessor 61 returns to the received data processing subroutine program 5B506. Next, the procedure of the mode request subroutine program will be explained with reference to FIG. The mode request subroutine program 5B523 starts in step P4101, and first searches the address buffer 3101 in step P4102. Based on this search, the microprocessor 61 determines that the map address M represented by the received data character is stored in the address buffer 310.
Step P4103 to determine whether it is unregistered in 1.
), if it has already been registered in the address buffer 3101, the determination result in step P4103 is no, so the microprocessor 61 proceeds to step P4107, sets the count data to "0", and executes the received data processing subroutine program. to return to. On the other hand, if map address M is unregistered, step P410
Since the result of the determination in step 3 is YES, the microprocessor 61 determines whether or not there is space in the address buffer 3101 (step P4104). If there is space, the map address M is registered in the address buffer 3101 in step P4105. Then, the process advances to step P4107. On the other hand, if the determination result in step P4104 is NO, the microprocessor 61 sets the transmission request flag TR of the information specified by the map address M to rlJ, and then proceeds to step P4107. Step P4107
Now, as mentioned above, set the count data ccNT to "0".
After that, the microprocessor 61 executes the received data processing subroutine program 58506. Referring again to FIG. 33, the microprocessor 61 returns from the transmission request processing subroutine program 5B512.
The flag 5YSWAIT is set in step P3309.
Check that SSC initialization has been completed (SYS
WAI T=O). Flag 5YSWA
IT is MSIF monitoring subroutine program 5B511
It is reset to "0" in step P3414, so if the initialization is not completed yet, step P3414 is reset to "0".
The answer of ago9 is NO, and microprocessor 61 re-executes the MSIF monitoring subroutine program to continue initializing the SSC. On the other hand, if the initialization has been completed, the determination result in step P3309 will be YES, and the microprocessor 61 will set the flag LO.
The OPF is checked to determine whether the main loop timing has arrived (LOOPF=1). If the main loop timing has not yet arrived, the microprocessor 61 executes the MSIF monitoring subroutine program SB51.
On the other hand, if the main loop timing has arrived, reset the flag LOOPF to "0",
Job processing subroutine step P3312,...
Step P3313 is executed. The procedure of the job processing subroutine program is shown in FIG. 42, and this subroutine program includes step P.
4.201, microprocessor 6
1, the flag JOBACT is first set to "1" and S
Determine whether the SC is out of standby mode or not (
Step P4202). Since the flag JOBACT is set to "1" in step P4208, at the beginning of the series of job processing, the determination result in step P4202 is NO, and the microprocessor 61 executes step P42.
Proceeding to step 03, it is determined whether a command is held in the command register 32 or not. If step P420
If the result of the determination in step 3 is NO, the microprocessor 61 proceeds to step P4204 and determines whether or not the received frame 11 exists in the local mode map 34 and the global mode map 35 by searching the reception notification flag RR. If the determination result in step P4204 is NO, the microprocessor 61 proceeds to the trouble check subroutine program 5B541;
If the judgment result in step 4 is YES, the reception notification flag RR of the information constituting the received frame is reset to "0" (step P4205), and then the internal processing of the mode regarding the received frame is executed (step P4206).
After this, the microprocessor 61 proceeds to the trouble check subroutine program 5B541. Eventually, when the command is held in the command register 32, the determination result in step P4203 becomes YES, and the microprocessor 61 resets the capture confirmation bit Q of the captured command to "0" in step P42.
07), then the flag JOBACT is set to "1" (step P4208). When preparation for job processing is completed in this way, the microprocessor 61 sets the job processing bit on the busy register (BUSY-REG) set in the local mode map 34 (step P4209), and executes a trouble check subroutine. Execute program 5B541. As described above, when the flag JOBACT is set to "1", the next time the job processing subroutine program is executed, the determination result in step P4202 becomes YES, and the microprocessor 61 sets the flag S T OP F' in step P4210. If the result of the determination is YES, there is no request to forcibly stop job processing, so the microprocessor 61 stores the information in the local mode map 34 and global mode map 35. information and command register 32
A predetermined function is realized in accordance with the commands held in the . If a series of job processing has been completed,
Since the judgment result in step P4212 is YES, the microprocessor 61 sets the flag JOBACT to "0" (step P4213), and resets the job processing bit of the busy register set in the local mode map 34 (step P4213). P4214). The microprocessor 61 then executes a trouble check subroutine program. On the other hand, if the determination result in step P4210 is NO, the job stop sequence process is executed in step P42.
15) In step P4216, it is determined whether the job processing has been stopped. If the job processing has been stopped, the microprocessor 61 sets the flag 5TOP.
After resetting F to "0", the trouble check subroutine program is executed, and if the stoppage of job processing is not completed, the trouble check subroutine program is executed without executing step P4217. The trouble check subroutine program starts at step P4301 as shown in FIG.
is checked to determine whether the error information held in the error register is a value "0" indicating that no error has occurred (step P4.301). If the error information has a value of "1" and indicates the occurrence of an error, the microprocessor 61 should set the 61st bit of the status register 33 to "1" (step P4303); conversely, the error information has a value of "0". If it shows that no error has occurred,
The G1 bit of the status register 33 is reset to "0" (step P4303). After operating the 01 bit of the status register 33 in accordance with the error information in this way, the microprocessor 61 selects the fatal register (FATA) set in the local mode map 34.
It is determined whether the fatal information in L-REG) is set to a value "0" indicating that no serious accident has occurred (step P4304). If the fatal information has a value of "1" and indicates that a serious accident has occurred, the microprocessor 6
1 is the 62 bit (FATAL) of the status register 33.
bit) to "1" (step P4306),
On the other hand, if the fatal information has a value of "0" indicating that no serious accident has occurred, 62 bits of the status register 33 are reset to "0" (step P4305). After operating the 02 bit of the status register 33 in accordance with the fatal information in this way, the microprocessor 61 returns to the busy state set in the local mode map 34.
Determine whether the busy information in the register (BUSY-REG) is set to "0", which indicates non-execution of operations associated with commands or mode changes (step P4307).
). If the L/% busy information has a value of "1" and indicates that an operation is being executed due to the above command or mode change, the microprocessor 61 sets bit 04 (BUSY bit) of the status register 33 to "1". On the other hand, if the busy information has a value of "0" and indicates that the operation is not executed, the 04 bit of the status register 33 is reset to "0" (step P430).
8). After manipulating the 64 bits of the status register 33 in accordance with the busy information, the microprocessor 61
determines whether the not-ready information in the not-ready register (NOTREAD Y-REG) set in the local mode map 34 is set to the value "0" indicating completion of initialization (step P4310).
. If the not ready information has a value of ``1'' and indicates that initialization is being executed, the microprocessor 61 sets the 65 bit (NOT READY bit) of the status register 33 to ``1'' (step P43-12); If the not ready information indicates the completion of initialization with the value rOJ, then 1. The 65 bits of the status register 33 are reset to "0" (step P4311). After operating the 05 bit of the status register 33 in accordance with the not ready information, the microprocessor 61
returns to the job processing subroutine program.

[Brief explanation of the drawing]

FIG. 1 is a claim correspondence diagram of the present invention; FIG. 2 is a block diagram showing a macro system configuration of an embodiment of the present invention; FIG. 3 is a block diagram showing a logical address space set in a slave processing unit; FIG. 4 is a block diagram showing the relationship between the functional blocks within the mask processing unit and the logical address space managed by the mask processing unit, and FIG. 5 is a communication network realized within the laser printer according to one embodiment. FIG. 6 is a block diagram showing the hardware configuration of the MSC. FIG. 7 is a timing chart explaining the communication method of one embodiment. FIG. 8 shows the structure of a frame consisting of multiple characters. 9 is a format diagram showing the bit structure of each character. FIG. 10 is a format diagram showing the bit structure of an ID character. FIGS. 11(a) to (i) are characters forming each frame. 12 is a block diagram illustrating SSC break detection when information is transmitted across multiple frames, and FIG. 13 is a format showing status information assigned to each bit of the status register. Figure 14 is an address map diagram explaining detailed status information in the SSC standard mode map allocated to a part of the local mode map, and Figure 15 is a modification of the embodiment in which report mode and polling mode are mixed. FIG. 16 is a flowchart showing the overall configuration of the program executed by the MSC, FIG. 17 is a flowchart showing the steps of the main routine program executed by the MSC, and FIGS. 18A to 18B. 19 is a flowchart showing the steps of the system update subroutine program. FIG. 20 is a flowchart showing the steps of the option connection check subroutine program. The figure is a flowchart showing the steps of the main loop timer processing subroutine program and the polling control timer processing subroutine program, Figure 22 is a flowchart showing the detailed steps of the polling error handling subroutine program, and Figure 23 is the procedure of the polling control subroutine program. 24 is a flowchart showing the steps of the transmission request processing subroutine program, FIG. 25 is a flowchart showing the detailed steps of the received data processing subroutine program, and FIG. 26 is the detailed steps of the status/report analysis subroutine. 27 is a flowchart showing the procedure of the mode analysis subroutine program, FIG. 28 is a flowchart 1 diagram showing the procedure of the SSC status check subroutine program, and FIG. 29 is a flowchart diagram showing the procedure of the job processing subroutine program. 30 is a flowchart showing the procedure of the trouble check processing subroutine program, FIG. 31 is a block diagram showing the configuration of the SSC transmission buffer and its related circuits, and FIG. 32 is a flowchart showing the procedure of the trouble check processing subroutine program. Flowchart diagram showing the schematic configuration, Figure 33 is a flowchart diagram showing the procedure of the main routine program executed by the SSC, Figure 34 is the MSIF
FIG. 35 is a flowchart showing the steps of the monitoring subroutine program, FIG. 35 is a flowchart showing the steps of the SSC transmission request processing subroutine program, and FIG. 36 explains the steps of the main loop timer processing subroutine program and the job control timer processing subroutine program. FIG. 37 is a flowchart explaining the steps of the received data processing subroutine program, FIG. 38 is a flowchart showing the steps of the status/command processing subroutine program, and FIG. 39 is a flowchart explaining the steps of the polling answer processing subroutine program. FIG. 40 is a flowchart explaining the steps of the mode set processing subroutine program, FIG. 41 is a flowchart explaining the steps of the mode request processing subroutine program, and FIG. 42 is a flowchart explaining the steps of the job processing subroutine program. FIG. 43 is a flowchart showing the procedure of the trouble check subroutine program. 1 to 4...Slave unit, 5...Processing command, 6...One-word command, 7...Master processing unit, 8... Communication means, 9...Connection determining means, 10...Command supply means, 11...Starting means.

Claims (2)

[Claims] (1) A plurality of slave processing units each realizing a predetermined function; a processing command that instructs the realization of the predetermined function; and a communication command that controls the communication of management data of the slave processing unit. a master processing unit that outputs and manages the plurality of slave processing units, and a communication means that connects the plurality of slave processing units and the master processing unit and transmits the processing command and the communication command, In the image processing device that functions by being switched between at least an operating mode and a standby mode, the master processing unit supplies the communication command to the plurality of slave units via the communication means so that the slave units a connection determining means for determining whether or not the connection is connected to the communication means; and a connection determining means that transmits the processing command in the operation mode only to the slave unit that the connection determining means determines to be connected to the communication means via the communication means. An image processing apparatus comprising: a command supplying means for supplying a command; and a starting means for starting the connection determining means in the standby mode. (2) The image processing apparatus according to claim 1, wherein the activation means activates the connection determination means also when the image processing apparatus is activated.