JPS62172405A - Nc system - Google Patents

Abstract

PURPOSE:To reduce load of a processor by transmitting key information from an external equipment to an NC device by specified procedure of transmission, and transmitting CRT information from the NC device to the external equipment. CONSTITUTION:When communication becomes possible, key information inputted from a keyboard 12a-3 is transmitted to the circuit controlling section 11b of an NC device 11 through an interface 12a-4 and a communication circuit 14 in a format base on HDLC transmission procedure together with other data. On the other hand, when it is desired to indicate specified information in CRT 12a-2, a processor 11a for numerical control sends information to the circuit controlling section 11b. The circuit controlling section 11b transmits CRT information to the processor 12a-1 of an MMC device 12 in a format following HDLC transmission procedure through the communication circuit 14 and interface 12a-4 together with other data. Thus, the load of the processor in the NC device can be reduced, and as the external equipment has intelligent function, a specific function can be added.

Description

Detailed Description of the Invention <Public Expenses for Industrial Use> The present invention relates to an NC system, and in particular, it is possible to remove a display device (CRT) or keyboard from the configuration of a standard NC device, and optionally replace at least a processor, a CRT, and a keyboard. The present invention relates to an NC system that can increase the functionality of an NC device by connecting an external device having the same.

<Prior art> In a numerical control system, a numerical control device (NC device)
performs predetermined NG control based on NC program data to move the mechanical movable part (tool or table).

In addition, programmable machine controller (2MC
equipment and when) M-1S- of the commanded NC data
, T- executes predetermined sequence control according to the function command, and controls each mechanical element of the machine tool based on the sequence processing result. Note that NC program data can be obtained from NC tape or memory, or can be obtained from a manual data input device with CRT (CRT & MDI device).
Input from

In addition to the function of manually inputting NC data, the CRT&MDI device displays various images such as current position, program contents, offset amount, parameters, alarm contents, setting data, etc. on the CRT screen as appropriate.
Alternatively, various data can be set, changed, and reset by operating predetermined keys on the keyboard, or NC data can be created interactively.

Figure 2 is a block diagram of a conventional numerical control system.
1 is an NC device, 2 is a PMC device, and 3 is a machine tool.

In the NC device 1, 101 is an NG tape on which NC data has been punched (another medium may be used), 102 is a tape league, 103 is a RAM for storing NC data and other processing results, and 104 is for storing a control program. RO
M, 105 is a processor, 106 is an axis control unit that receives the amount of movement of each axis per predetermined time and executes pulse distribution calculations, etc., 107 is a CRT&MDI device, and CRTIO
7a and a keyboard 107b.

<Problems to be Solved by the Invention> In this numerical control system, one processor 105 performs all (1) numerical control processing based on NC program data, data input/output processing for the CRT&MDI device 107, etc. Yes, and CRT & MD
It is necessary to process data for one device. This increased the load on the processor, making it impossible to perform detailed and quick processing. In particular, if a function is to be provided to create NC data interactively, the load on the processor will increase.

Furthermore, since CRT&MDI devices do not have intelligent functions, it is not possible to add specific display functions or operation functions, and if such functions are to be added, a new NC device must be designed.

From the foregoing, an object of the present invention is to provide an NC system that can reduce the load on the processor in the NC device, and can also provide specific functions as appropriate without modifying the NC device.

Means for Solving Problems> FIG. 1 is a schematic block diagram of an NC system according to the present invention.

11 is an NC device; 12 is an MMC device (man-machine interface controller) as an external device having an intelligent function; 13 is a PMC device; and 14 is a communication line); It has a main processor section 12b.

In the NC device 11, lla is a processor for numerical control, and llb is a line control unit, which are connected to the processor lla via a bus line 11C.

In the sub-processor section 12a, 12a-1 is a processor, 12a-2 is a CRT, 12a-3 is a keyboard, 12a-4 is an interface, 12a-5 is a common memory, and in the main processor section 12b, 12b-1 is a It is a processor.

<Function> The line control unit 11b built in the processor is connected to the NCC system processor lla via the bus cotton 11C, and the standard N
Configure the C device 11.

Then, the CRT 12a-2 is sent to the line control unit 11b as appropriate.
The MMC device 12, which is an external device with an intelligent function, is connected to the keyboard 12a-3 via the communication line 14.

When the MMC device 12 is used as a normal CRT & MD device, the keyboard 1 of the MMC device 12 is
The key information input from 2a-3 is transmitted to the NC device 11 according to a predetermined transmission procedure, and the display data is transmitted from the NC device 11 to the MMC device 12 and displayed on the CRT 12a-2. Incidentally, since the MMC device 12 has an intelligent configuration, its functions can be easily upgraded or changed.

For example, the MMC device 12 can be provided with a function to create NC data interactively, and its specifications can be easily changed.

<Embodiment> FIG. 1 is a schematic block diagram of an NC system according to the present invention.

11 is an NC device, 12 is an MMC device (man-machine interface controller) as an external device having an intelligent function, 13 is a PMC device, and 14 is a communication line connecting the NC device 11 and the MMC device 12.

The NC device 11 is a CR from a normal NC device (see Figure 2).
The configuration includes the line control section 11b except for the T&MD I device (standard configuration).

Note that the figure shows a processor lla, a line control unit 11b, and a bus! Only s11c is shown.

Although not shown, the line control unit 11b includes a line control processor connected to the numerical control processor lla via the bus 11C, and eight-domain transmission hardware such as a serial/parallel conversion unit and a buffer unit. It is composed of Note that the line control processor is, for example, HDLC (high level
M according to the transmission procedure of data link control)
It exchanges data with the MC device 12. That is, frame data in the HDLC format is created and transmitted using the data received from the numerical control processor Ila and to be transferred to the MMC device 12, and the frame data transferred from the MMC device 12 is transferred to the HDLC device. It is decoded based on the transmission format and input to the processor lla.

The sub-processor unit 12a of the MMC device 12 includes a processor 12a-1, a CRT 12a-2, and a keyboard 1.
2a-3, an interface 12a-4, and a common memory 12a-5, and a main processor section 12b.
has a processor 12b-1 and has an intelligent function, and line control is performed by the processor 12a-1. In addition, in the figure, R
AM and control program memory (ROM) are omitted. It can also be configured to include any data input/output device.

Common memory 12a-5 is main processor section 12b
It was established to exchange data between
The data sending side writes data and commands to the common memory 12a-5, and the receiving side reads them, thereby performing data exchange between the main and sub-processor sections.

Now, if neither a CRT nor a keyboard is required as an NC device, a standard NC configuration is used for the numerical side without connecting the MMC device 12 to the line control section 11b.

On the other hand, if you want the NC device 11 to have at least the functions of a CRT&MDI device, the line control section 11b has one line! Connect the MMC device 12 via s14%.

In this configuration, the line control unit 11b determines whether the MMC device 12 is connected and powered on, in other words, whether communication is possible, by transmitting, for example, a predetermined command to the other party using a well-known method. Check the answer. That is, if the MMCMC device 12 is connected and powered on, the processor 12a-1 will send back a predetermined answer code upon receiving the command, so it is determined whether communication is possible depending on whether the answer code is sent back. can be recognized. Further, the processor 1 of the MMC device 12
2 a-1 is NC depending on whether the command is received or not.
It is recognized whether communication with the device 11 has become possible.

Once communication is possible, the key information input from the keyboard 12a-3 is sent to the line control unit 11c of the NC device 11 via the ink face 12a-4 and the communication line 14 together with other data in a format compliant with the HDLC transmission procedure. transmitted to.

When the line control unit 11b receives data from the MMC device 12, it decodes the data, distinguishes the data input from the keyboard 12a-3, and inputs the data to the processor lla. As a result, processor lla performs predetermined numerical control processing.

On the other hand, when it is desired to display predetermined information on the CRT 12a-2, the numerical control processor lla sends the information to the line control section 11b. The line control unit 11b transmits the CRT information together with other data in a format compliant with the HDLC transmission procedure to the processor 12a-1 of the MMC device 12 via the communication line 14 and the interface 12a-4. As a result, the processor 12a-1 distinguishes the CRT information transmitted from the NC device and selects the CRT 12a-1.
-2 and display it.

Incidentally, in order to create NC data interactively, a common memory 1 is used between the main processor section 12b and the sub-processor section 12a.
2a-5, data is exchanged between the CRT 12a-2 of the sub-processor section 12a and the keyboard 12a.
-3 to input data interactively and automatically create NC data in the main processor section 12b. Then, the sub-processor section 12a receives the created NC data from the main processor section 12b via the common memory 12a-5, and then transmits the NC data to the NC device 11 according to the transmission procedure described above.

Further, if a program file unit storing a large amount of NC data is connected to the MMC device 121, the processor lla of the NC device 11 sends the NC program number to the MMC device 12 according to the above-mentioned transmission procedure,
The processor 12a of the MMC device 12 receives the NC program data having the number from the program file unit and then transmits the NC data to the NC device 1 according to the transmission procedure.

<Effects of the Invention> According to the present invention, a standard NC device is configured by connecting a line control section built in the processor to a processor for NO control via a bus line, and a CRT device is connected to the line control section as appropriate. and an external device having at least a keyboard and a processor are connected via a communication line, key information is transmitted from the external device to the NC device according to a predetermined transmission procedure, and CRT information is transmitted from the NC device to the external device. Therefore, the load on the processor in the NC device can be reduced, and since the external device has an intelligent function, unique functions can be added.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an NG system according to the present invention, and FIG. 2 is a block diagram of a conventional NC device. 11...NC device, 11a...processor, 11b...
Line control unit, 12...MMC device, 12a...Sub processor unit, 1
2a-2...CFLT, 12a-3...Keyboard, 1
2b... Main processor section, 13... PMC device, 1
4. Communication line patent applicant Fanuc Co., Ltd. agent Patent attorney Chiki Saito Figure 2 NC device: ``--------7---''!

Claims (1)

[Scope of Claims] A standard NC device is constructed by connecting a line control section built in the processor to a processor for NC control via a bus line, and at least a CRT device, a keyboard, and a processor are connected to the line control section as appropriate. What is claimed is: 1. An NC system that connects an external device having the following via a communication line, transmits key information from the external device to the NC device according to a predetermined transmission procedure, and transmits CRT information from the NC device to the external device.