JPH02214905A - Signal transmitting method for action controller of control panel - Google Patents

Abstract

PURPOSE:To omit the addition of a program required for translation of the control switch information received from the control panel side at the side of a sequencer by transmitting the switch information to the sequencer in such a form that can be directly used by the sequencer. CONSTITUTION:A loader 10 set a translation program to a RAM 4 or an EEPROM 3 to show a specific address signal that is sent to a sequencer working as an action controller when a specific one of operation switches 6 is operated on a control panel POD. A microcomputer system CPU 1 receives an output signal from the switch 6 and translates this signal into an address signal of the corresponding sequence program via the retrieval of a translation table to send the address signal to a sequencer 11. As a result, no special software (translation program) is required at the sequencer side and the control performance of the sequencer is never deteriorated. Furthermore the constitution of a control program receives no limitation.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an operation control device (operation spring) L< of an operation control device (sequencer) that programs and controls automated equipment, etc. constituting a production line, on the panel. Operation control device (sequencer) outputs the output signal from the operation switch
This relates to a transmission method for sending data to.

[Conventional technology]

FIG. 3 is a block diagram showing an operation panel of this type that has been proposed in the past (an operation panel proposed as a programmable operation display by the present inventors in Japanese Patent Application No. 176692/1982).

This operation panel is an operation panel that serves as a programmable operation display (POD) for automated equipment, etc. that constitutes a manufacturing line.

Automated equipment includes equipment and processes such as unloading conveyor, jig cutout, stopper, jig return, jig recovery, jig set, pallet down, and bullet slide, etc., and constitutes the required production line. In addition, it is equipped with a control device (sequencer) to program and control them, and is equipped with a control device (sequencer) to program and control them. It is now possible to display the following information from the operation panel.

In Fig. 3, POD is an operation panel as a programmable operation display, 1 is a microcomputer system as a CPU (Central Processing Unit), 2 is a character generator (CG) that generates display characters, and 3 is a graphic data that makes up the screen. Screen memory for storing (EEPRO
M), 4 is a data memory (RAM) for holding quantitative data displayed on the screen, 5 is an internal lotus, 6
is a transparent touch key in which a display panel and a transparent switch are integrated.Of these, the code 6a refers to the transparent switch, and the code 6b (6a) refers to the display panel.
, 6b) are used (although not directly shown in FIG. 1).

The transparent switch 6a is located on the display screen of the display panel 6b, and by touching the operation item displayed on the screen through the transparent body that constitutes the transparent switch 6a, you can respond from the transparent switch 6a. (Therefore, hereinafter, the transparent switch 6a may also be referred to as an operation switch).

7 is a key encoder (functions to input the operation output of the operation switch 6a, encode it and transmit it to the microcomputer system 1), 8 is an operation key 9 is an interface bus, and 10 is an input and setting data for screen creation. A loader 11 is used for inputting setting data, etc., and a sequencer 11 is an external operation control device. An automated device (not shown) is connected to the sequencer, and the operating procedure (program) of the automated device is controlled by this sequencer.

Note that this sequencer 11 is
It has a function of issuing commands to select and designate screen data stored in the data memory 4, and reading the operation results of the operation switch 6a and operation keys 8 via the key encoder 7 and the microcomputer system 1, and depending on the results, It has the function of outputting an operation output to the above-mentioned equipment connected to the sequencer 11, and issuing commands to the microcomputer system 1 to switch the display screen on the display panel 6b.

12 is an indicator lamp, 13 is an alarm relay, 14 is a buzzer,
It is.

Indicator lamp 12) Various operations such as alarm relay 13, buzzer 14, nameplate character display (not shown) on the indicator lamp 12 side are specified by the program of the sequencer 11, and are specified via the interface lotus 9. The microcomputer system 1 that receives the command controls these operations.

FIG. 4 is a front view of the above-mentioned operation panel (POD). In this figure, the same or corresponding parts as in FIG. 3 are given the same reference numerals.

That is, 6 is a transparent touch key, 6a is an operation switch (transparent switch), 6b is a display panel (switch name), 8 is an operation key, and 12 is a display lamp.

In this case, the unloading conveyor,
This example shows a total of 12 items (12 operation switches) such as jig cutting, stopper 1, etc. When you want to manually send an operation command from the operation panel side, for example, when you want to send an operation command for "jig set", press the "jig set" part, which will constitute a transparent switch (operation switch). Therefore, a signal (operation signal) indicating that the button has been pressed is sent to the sequencer via the CPU.

Actually, in this case, if it is the "jig set" part, the transparent switch that makes up the "jig set" part only performs the selection operation, and the actual operation signal is sent by the output key 8a of the operation key 8. This is done through operations. Further, at this time, the number of transparent switches to be selected is not limited to one, and a plurality of transparent switches may be selected at one time. When a plurality of signals are selected, the selected plurality of operation signals are of course sent out by operating the ratio key 8a.

I would like to explain this by the way, but what about the B mark on the operation switch 8? The switch marked is a switch for scrolling the display on the operation panel. In other words, if all the operation items cannot be displayed on one screen, the remaining items are marked 8? The display can be scrolled by operating the switch marked with the mark.

In short, in FIG. 4, operation items belonging to one sequence are displayed on the panel surface, and it is possible to display whether or not each operation item is operated.

When the "jig set" is operated, the operation can be indicated by inverting (or flickering) the display color of that part as shown in the figure.

When an operation item (operation switch) is operated, a signal indicating this is transmitted from the operation panel to the sequencer via the CPU, and the format of the transmitted signal is as follows. In other words, in this case, there are 12 operation items (operation switches), so 2 bytes (16 bits)
Prepare the data and allocate 12 operation items to each bit in sequence (4 items remain). Then, the focus corresponding to the operated operation item is set to logic 1, and the bit corresponding to the operation item GJ that is not operated remains at logic O.
Transfer 2 bytes (16 bits) of data to the CP from the operation panel.
It is sent to the sequencer via U. In other words, the operation status of all operation items (operation switches) is sent out as bit data.

[Problem to be solved by the invention]

When such a transmission signal format is adopted, the sequencer that receives it identifies which operation item was actually operated from the received bit data, and uses it in the sequence program of the sequencer. It is necessary to translate to the address assigned to the item, and for this purpose it is necessary to prepare special software (translation program).

Generally, a sequencer periodically monitors the machine (automated equipment) it controls using various sensors.
Control operations are performed at high speed according to the monitoring results.

Therefore, if the sequencer is equipped with the above-mentioned special software (translation program) and performs a translation operation every time it receives an operation (item) signal from the operation panel, it will take time and the monitoring operation will be delayed. As a result, there was a problem that the monitoring cycle became long and the control performance deteriorated.

In addition, although the program capacity of a sequencer is generally smaller than that of a computer, a portion of it is allocated to special software (translation program), so the capacity of the control program is correspondingly smaller, and there are restrictions on the program configuration. There was also the problem of being accepted.

An object of the present invention is to overcome the problems of the prior art as described above, and to install special software (translation program) on the sequencer side.
This method eliminates the need for a sequencer (operation control bag N) on the operation panel, which does not require a deterioration in control performance as a sequencer, and does not require restrictions on the configuration of the control program. The object of the present invention is to provide a signal transmission method.

[Means to solve the problem]

To achieve the above object, in the present invention, in the operation panel as a programmable operation display, an output signal corresponding to the operation switch output when the operation switch is operated is sent to the operation switch on the sequence program of the sequencer. A translation table is provided for translating into correspondingly allocated address signals.

[Effect]

When the CPU receives an output signal from the operation switch on the operation panel, it searches the translation table, translates it into a corresponding address signal on the sequence program, and then sends it to the sequencer.

〔Example〕

The present invention will now be described in detail with reference to the drawings.

A translation program that determines which address signal is sent to the sequencer when which operation switch on the operation panel is operated is R by the loader 10 shown in FIG.
It can be set to AM4 or EEPROM3.

FIG. 1 is an explanatory diagram showing an example of the setting. In the figure, 20 is a setting table.

On the operation panel, if the operation switch "Unload Conhair" is a switch ■, "Jig Cutout" is a switch ■, "Stopper 1" is a switch ■, and "Jig Locate" is a switch @, then these switches The address for the switch is shown in table 20, that is, the address r
4000J, address r400 for switch ■
Similarly, the address r4800J is set for the switch (2) by the loader 10, and the setting table 20 is stored in the RAM 4 or EEPROM 3. Of course, these addresses are
These are addresses assigned to each operation switch on the program.

In this way, when you operate an operation switch on the operation panel, the CPU searches for the corresponding address and sends it to the sequencer, so there is no need for translation on the sequencer, and therefore no translation program is required for that purpose. Become.

FIG. 2 is an explanatory diagram showing the transmission format of address data transmitted between the operation panel and the sequencer.

In the same figure, 51 indicates address data transmitted from the operation panel to the sequencer, 52 indicates its header part, and 5
3 is the data length, 54 is the address data itself, and 55 is the error check data.

Further, 61 indicates the response data transmitted from the sequencer side to the operation panel side, 62 is the header part, 63 is the data length, 67 is the response data (if it is received correctly, it is an ACK code indicating that, If the data could not be received correctly, it is a NACK code indicating that fact), 6
5 is error check data.

Normally, the sequencer can correctly receive address data from the operation panel, so in that case, the series of data transmission is completed by transmitting an ACK code as an affirmative response from the sequencer to the operation panel side. In the unlikely event that the sequencer does not receive the code correctly, a NACK code will be sent from the sequencer to the operation panel as a negative response. correct.

On the sequencer side, the received address data is used as is as control data on the program.

〔Effect of the invention〕

According to the present invention, since the sequencer directly identifies the switch information operated on the operation panel and transmits it to the sequencer in a format that can be used as is, the following effects can be expected.

(b) There is no need to add a program to the sequencer side to translate operation switch information from the operation panel side.

(b) Therefore, existing programs can be used as is on the sequencer.

(c) Since there is no need to store a translation program in the control program storage area on the sequencer side, there is no need to reduce the control program storage area.

(d) Since there is no additional program such as a translation program on the sequencer side, control performance can be maintained without reducing the operation cycle time.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing an example of settings made by the loader when implementing the present invention, Fig. 2 is an explanatory diagram showing the transmission format of address data transmitted between the operation panel and the sequencer, and Fig. 3 is a conventional proposal. FIG. 4 is a block diagram showing the operation panel that has been installed, and FIG. 4 is a front view of the operation panel. Explanation of symbols

Claims (1)

[Claims] 1) CPU (Central Processing Unit) connected to the operation control device
a storage means for storing operation items corresponding to the operation of the operation control device; a display panel for reading out and displaying the operation items stored in the storage means on a screen; and a display panel corresponding to the operation items on the panel display screen. an operation switch that, when operated, generates an operation output for the item and outputs it to the CPU;
In the operation panel as a programmable operation display consisting of, an output signal corresponding to the operation switch output when the operation switch is operated is assigned in correspondence to the operation switch on the sequence program of the operation control device. The CPU includes a translation table for translating into a corresponding address signal, and upon receiving an output signal from the operation switch, the CPU searches the translation table and translates it into a corresponding address signal, and then performs the operation control. A method for transmitting a signal to an operation control device in an operation panel, the signal being transmitted to the device. 2) In the method for transmitting a signal to an operation control device in an operation panel according to claim 1, when the output signal from the operation switch that the CPU receives is composed of output signals from a plurality of operation switches. , a method for transmitting a signal to an operation control device in an operation panel, characterized in that the address signals are translated into a plurality of corresponding address signals and then sent to the operation control device as one signal output.