JPH02148305A - Data transferring device using firmware - Google Patents

Abstract

PURPOSE:To supply NC data to plural NC devices even in a system using a low-ability CPU by enriching the CPU with content processing as firmware so as to reduce the burden of the CPU for system management and effectively utilizing the CPU in the field of management processing. CONSTITUTION:The most important section of this data transferring device is a communication control section 14 and, when commands are sent from plural NC devices 15-18, the section 14 discriminates the commands and informs a CPU 11 by interruption of the arrival of the requests from the NC device. The CPU 11 sends, for instance, the required 1st NC data to the section 14 and, after transmission, returns to an ordinary process. The section 14 transfers the 1st NC data to the NC device 15 after converting the data into the 2nd NC data for the device 15 in accordance with the command. Therefore, the data transferring device using firmware is constituted of a memory 1, interface 2, and firmware 3 and a communication processing section 3A, command processing section 3B, and data processing section 3C are incorporated in the firmware 3.

Description

Detailed Description of the Invention (a) Technical Field of the Invention The present invention relates to a data transfer device using firmware for effectively utilizing the CPU when the data supply to an NC device is controlled by the CPU. be.

(b) Prior Art and Problems Next, the configuration of the prior art will be explained with reference to FIGS. 5 and 6.

11 in FIG. 5 is a CPU, and 12 is an NC device.

The CPU II and the NC device 12 are connected by a communication line.
In response to a data request from the C device 12, mj! sends NC data in a format compatible with the NC device 12! + and supply data through communication.

The CPU II in FIG. 5 is used for processing communication data and
It is occupied by processing the request command from 2.

For this reason, with conventional communication technology, the load on the CPU II is heavy, and when the processing capacity of the CPU II is low, the NC device 1
There is a problem that it takes time to transfer the data of 2/\ and process the NC data, making it impossible to use the CPU II effectively.

Therefore, as shown in FIG. 6, a data processing section 13 for processing data, etc. is added to FIG.
The burden of processing requests from the device 12 is large;
There is a problem that data of multiple NC devices 12 cannot be managed.

(C) Purpose of the Invention The present invention employs firmware consisting of a communication processing section, a command processing section, and a data processing section, a memory that can be accessed by a CPU, and an interface that connects a plurality of NC devices. Its purpose is to reduce the burden on the CPU by taking charge of communication with the NC device and processing of NC data.

(d) Embodiment of the Invention Next, a system diagram of an embodiment of the invention will be explained with reference to FIG.

14 in FIG. 2 is a communication control section, and 15 to 18 are NC devices.

The main part of this invention is the communication control section 14, the details of which will be described later.

When a command is sent from the NC device 15, the communication control unit 14 determines the command and notifies the CPU 11 of the request from the NC device 15 through an interrupt.

The CPU II sends the necessary first NC data to the communication control unit 14.
Once the transmission is complete, normal processing resumes.

The communication control unit 14 converts the first NC data into second NC data for the NC device 15 according to the command, and transfers the second NC data to the NC device 15.

Next, a block diagram of an embodiment according to the present invention is shown in FIG.

In FIG. 1, 1 is a memory, 2 is an interface, and 3 is firmware.

Memory 1 stores first NC data from CPU II.

The interface 2 connects a plurality of NC devices to the communication control section 14.

The firmware 3 includes a communication processing section 3A, a command processing section 3B, and a data processing section 3C'? 'tM will be done.

The communication processing unit 3A communicates with the NC device 1 via the interface 2.
5 to 18 and sends and receives data.

The command processing section 3B determines the type of command received by the communication processing section 3A, and requests the CPU II for first NC data corresponding to the command by interrupt.

The interrupt control unit 4 interrupts the CPU at the request from the command processing unit 3B.
Interrupt II.

When the CPU II receives an interrupt from the interrupt control unit 4, it stores first NC data corresponding to a command from the NC device 15 in the memory 1.

The data processing unit 3C processes the first N data stored in the memory 1.
The C data is converted into second NC data according to the command, and the second NC data is stored in the memory 1.

The communication processing unit 3A supplies the second NC data in the memory 1 to the NC device 15.

Note that the data processing unit 3C converts the first NC data stored in the memory I into second NC data in the following manner, for example.

(7) The minimum digit of the first NC data in CPUII is 10
When operating the NC device 15 in units of 18 μm,
The data in memory 1 is multiplied by 10 and converted into second NC data with a minimum digit of 1 μm.

(b) If the coordinate system when creating the first NC data in the CPU I is different from the coordinate system of the NC device 15, operate the XY command values. For example, if the XY axes are different,
Replace the Y command value.

Next, a detailed configuration diagram according to the present invention is shown in FIG.

Interface 2 in Fig. 3 is composed of the serial communication R3-422 method using differential signal input/output, and has two 2-channel circuits, making N for a total of 4 channels.
Up to four C devices can be connected.

Further, one circuit (two channels) has a structure in which it is connected to the communication control unit 14 by a uniter, and can be removed when not in use.

The memory 1 is separated from the work memory of the firmware 3 and is configured to be directly accessible from the CPU II.

The second NC data of the memory l converted by the data processing unit 3C of the firmware 3 is stored in the memory 1, and the NC data
It is transferred to the device 15.

Control of memory 1 shared with CPU II is controlled by BUSAC.
It is switched by the K signal, and it is switched by the BUSRQ signal from CPU1.

When the lNTR signal shown in FIG. 3 is connected to the interrupt input of the CPU II, the CPU 11 learns that there is a request from the NC device 15, and writes necessary data to the memory 1 by interrupt processing.

Next, the bus interface procedure will be explained with reference to FIG.

The lNTR signal of FIG. 3 occurs when the data request of FIG. 4 is issued.

A personal computer or the like can also be used as the CPU II.

The communication processing unit 3A of the firmware 3 conforms to international standards.
By using the HDLC method of the data transmission control procedure specified by ISO (ISO), high-speed communication is possible.

The communication speed is determined by the communication clock from the oscillator 19 in FIG.

When the oscillator 19 transfers data to the NC device 15 and the CPU II, the clock number is set to the optimum speed6.For example, if the clock number of the oscillator 19 is 62.5kHz,
The communication speed is (i2.5kb/sec).

(e) Effects of the Invention According to this invention, by enriching the content processing as firmware, the load on the CPU for system management is reduced and the CPU is effectively utilized for management processing. Even in systems using CPUs, multiple N
NC data can be supplied to the C device.

Furthermore, the CPU is less occupied, and the CPU can be used for managing the state of the NC device or for other purposes.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of an embodiment according to the present invention, Fig. 2 is a system diagram of an embodiment according to the present invention, Fig. 3 is a detailed block diagram of an embodiment according to the present invention, and Fig. 11 is a diagram explaining the procedure of the bus interface. , FIG. 5 and FIG. 6 are block diagrams of the prior art. 1...Memory, 2...Interface, 3...Firmware, 3A...Communication processing unit, 3B...Command processing unit, 3C・・・
...Data processing unit, 11...CPU, 12
...NC device, 13... Data processing section, 14... Communication control section, 15-18...
・NC device. Figure Figure Agent Patent Attorney Kinji Omata Figure (CPU) (Communication Board)

Claims (1)

[Claims] 1. A memory (1) for storing first NC data from a CPU (11); an interface (2) for connecting a plurality of NC devices; A communication processing unit (3A) that sends and receives data to and from the device, and a command that determines the type of command received by the communication processing unit (3A) and requests the CPU (11) for first NC data corresponding to the command by interrupt. Processing unit (3B) and first NC of memory (1)
A firmware (3) having a data processing unit (3C) that converts data into second NC data according to the command and stores the second data in the memory (1). Data transfer device.