JPH07104822A - Numerical control system - Google Patents

Abstract

PURPOSE:To provide a numerical control system capable of diagnosis from the outside when the use of fault diagnostic systems provided in a numerical controller and a programmable machine controller themselves is disabled. CONSTITUTION:In the configuration where a numerical controller 12 provided with the fault diagnostic system, programmable machine controller 13, manmachine interface controller 14 provided with no fault diagnostic function and graphic board 15 are connected to a bus 11, a debugging means 16 is connected to the man-machine interface controller 14 by a communication line, when the use of the fault diagnostic system is impossible, access can be performed from the debugging means 16 connected to the man-machine interface controller 14 through the bus 11 to an alarm message storage area 12a or 13a of the numerical controller 12 or the programmable machine controller 13. And also fault diagnosis is made possible by performing access through the bus 11 to an alarm message storage area 15a of the graphic board 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a numerical control system having a debug function, and particularly to a board having a processor connected to each other by a bus, in which a failure diagnosis function cannot be used or a board without a failure diagnosis function has a failure diagnosis function. The present invention relates to a numerical control system having a debug function that enables the above.

[0002]

2. Description of the Related Art A numerical control system includes a numerical control device for controlling the entire numerical control system and a servomotor, and an M function (auxiliary function command) from the numerical control device.
A programmable machine controller that receives signals from the S function (spindle function command), T function (tool selection command), etc., and controls the machine tool, and a man machine that functions as an interface between the operator and the numerical control system. An interface controller and each of them have a processor and are housed in a single printed board. Further, as a numerical control system having a processor uniquely, there is a graphic board having a graphic control function of a numerical control device.

FIG. 3 is a diagram showing the configuration of a conventional numerical control system having a debug function. In the figure, reference numeral 1 denotes a bus, and the bus 1 has a numerical control device (CNC device).
Printed boards 2, programmable machine controller (PMC device) 3, man-machine interface controller (MMC device) 4, and graphic board 5 are connected. A dedicated debug means 6 is connected to the man machine interface controller 4 via a communication line such as RS232C. The debugging means 6 is composed of a dedicated or general-purpose computer and a debugging application program installed in this computer.

In the conventional numerical control system, the numerical control device 2 and the programmable machine controller 3 each have their own failure diagnosis system such as a memory dump function, and the memory dump function stores the alarm message in the memory. You can see the alarm numbers stored in the area and the contents of past errors. Further, although the man-machine interface controller 4 itself does not have a failure diagnosis function, it has a memory area for storing the contents of the program counter in the processor, the contents of access to the processor, etc. It can be accessed from the connected debug means 6. That is, when the debugging means 6 is activated, the application program of the man-machine interface controller 4 is stopped, and the debugging operation of the application program is possible by directly accessing a specific memory area from the debugging means 6. The graphic board 5 itself does not have a failure diagnosis function.

[0005]

However, in the conventional numerical control system having the debug function, the numerical control device 2 and the programmable machine controller 3 each have their own failure diagnosis system, so that the program is not affected. When they occur, they can self-diagnose the failure independently, but if the numerical controller 2 and programmable machine controller 3 themselves hang up due to a system error, the same processor controls the failure diagnosis system. Therefore, there is a problem that the failure diagnosis system cannot be used and the alarm message cannot be read.

The present invention has been made in view of the above points, and a numerical controller and a programmable machine
It is an object of the present invention to provide a numerical control system capable of diagnosing externally when the failure diagnosis system of the controller itself becomes unusable.

[0007]

In order to solve the above-mentioned problems, the present invention provides a numerical control system having a debugging function, which has a processor for controlling the entire numerical control system and the servomotor. And a programmable machine controller having a processor for controlling a machine tool in response to a command from the numerical control device, and a man-machine interface controller having a processor that functions as an interface with an operator, A graphic board having a processor for graphic control, the numerical controller, the programmable machine controller,
A bus connected to the man-machine interface controller and the graphic board for transferring data between them, and communicating with the numerical controller, the programmable machine controller or the man-machine interface controller. In the alarm message storage area of the other numerical control device, the programmable machine controller, the man-machine interface controller, or the graphic board connected by a line and connected to the bus via the bus A numerical control system is provided, which comprises a debug means for accessing.

[0008]

According to the above-mentioned means, when the numerical control device or the programmable machine controller having the fault diagnosis function connected to the bus cannot use the fault diagnosis function due to the system hang-up, the debug means is changed to another numerical value. Connect to the controller, programmable machine controller or man-machine interface controller, and access the alarm message storage area of the numerical controller or programmable machine controller whose fault diagnosis function is disabled via the bus. .
In addition, even for graphic boards that do not have a failure diagnosis function, the debug means connected to the numerical controller, programmable machine controller, or man-machine interface controller can access the alarm message storage area of the graphic board via the bus. to access.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing the configuration of a numerical control system having a debug function according to the present invention. In the figure, 11
Is a bus to which boards each having a processor are connected, and to the bus 11, a numerical controller 12, a programmable machine controller 13, a man machine,
The interface controller 14 and the graphic board 15 are connected to each other. Debug means 16 is connected to the man-machine interface controller 14 by a communication line. Further, the debug means 16 can be selectively connected to the numerical controller 12 or the programmable machine controller 13 by using these communication lines, if necessary. Further, each board connected to the bus 11 stores alarm message storage areas 12a and 13 in which the contents of alarms generated during the control operation of the respective processors are stored.
a, 14a, 15a.

The debugging means 16 may be, for example, a personal computer equipped with a debugging application program. As a communication line,
The RS232C provided in each of the numerical control device 12, the programmable machine controller 13, and the man-machine interface controller 14 is used.

The debug means 16 acts primarily as a debugger for the man machine interface controller 14. Therefore, normally, the alarm message storage area 14a of the memory of the man-machine interface controller 14 from the debug means 16
Directly access and see the contents of the alarm to debug the application program.

At this time, also in the numerical controller 12 and the programmable machine controller 13, when a program failure occurs, the contents of the alarm are stored in the alarm message storage areas 12a and 13a, respectively, and the failure diagnosis system is based on this. Can work alone. Regarding the graphic board 15, an alarm message storage area 15a when the processor fails
The contents of the alarm are written in.

Here, if the numerical control device 12 or the programmable machine controller 13 goes down for some reason and the respective failure diagnosis systems become inoperable, these alarm message storage areas 12 are stored.
The contents of the alarms stored in a and 13a can be viewed by accessing from the debug means 16 via the bus 11 to which the man-machine interface controller 14 is connected. Further, even for the graphic board 15 originally having no failure diagnosis function, the alarm message storage area 15a can be accessed in the same way via the bus 11, and the content of the alarm can be viewed.

In this way, the contents of the alarm of the board connected to the bus 11 via the bus 11 from the debug means 16 can be seen, but the numerical controller 12 and the programmable machine controller 13 are different from the conventional ones. The fault diagnosis function it has is retained. This is because there is a diagnostic function that cannot be done unless each processor is running.

The debug means 16 is the numerical controller 1
2 or the programmable machine controller 13 through a communication line, and the bus 11 through the bus 11.
It can also be configured to access the alarm message storage area of another board connected to. For example, it is possible to connect the debug means 16 to the numerical controller 12 and access the alarm message storage area 13a of the programmable machine controller 13 via the bus 11 and vice versa.

FIG. 2 is a block diagram showing the configuration of an interactive numerical control apparatus which is an embodiment of the present invention. In the figure,
The numerical controller 12 includes a processor 21, a read-only memory (ROM) 22, a random access memory (RA).
M) 23, a non-volatile memory 24, and an input / output interface 25, each connected to a bus 26. An alarm message storage area 12a is set in a part of the random access memory 23. Further, an axis control circuit 27 is connected to the bus 26, and the axis control circuit 2
7 is connected to a machine tool 30 via a servo amplifier 28.

Programmable machine controller 1
3 is connected to the bus 26, has a processor (not shown in detail) capable of executing its own failure diagnosis system, and has an alarm message storage area 1 in a certain memory area.
3a is set.

The man-machine interface controller 14 includes a processor 41, a read-only memory (ROM) 42, and a random access memory (RAM) 4.
3, non-volatile memory 44, input / output interface 45,
It has a video RAM (VRAM) 46 and a graphic control circuit 47, each connected to a bus 48. An alarm message storage area 14a is set in a part of the random access memory 43. The debug means 16 is connected to the input / output interface 45. Also, the bus 48 is connected to the bus 26 by the bus 49,
It constitutes the bus 11 of FIG.

The graphic board 15 is a CRT / MDI
(Cathod Ray Tube / Manual DataInput) Unit 5
It corresponds to the graphic control circuit 51 of 0 and is connected to the bus 26. The graphic control circuit 51 also has an alarm message storage area 15a.

The CRT / MDI unit 50 also has a switch 52, a display device 53, a keyboard 54 and a software key 55. The processor 21 for the numerical controller 12 controls the entire interactive numerical controller according to the system program stored in the read-only memory 22. The random access memory 23 stores various data or input / output signals in addition to the alarm message.
The non-volatile memory 24 stores a machining program, parameters, pitch error correction amount, tool correction amount, etc. that should be retained even after the power is turned off. Also, the input / output interface 46
An external device such as a floppy disk device, a printer, or a paper tape reader is connected to the device, and the input / output of data including NC data is controlled between these devices.

The axis control circuit 27 receives the axis movement command from the processor 21 and outputs the axis command to the servo amplifier 28. The servo amplifier 28 receives the movement command and drives the servo motor of the machine tool 30.

Programmable machine controller 1
3 receives a T function signal (tool selection command) or the like when executing the NC program. Then, these signals are processed by the sequence program, the signals are output as operation commands, and the machine tool 30 is controlled. In addition, machine tool 3
Receive status signal from 0, perform sequence processing,
Transfer the required input signals to the processor 21.

The processor 41 for the man-machine interface controller 14 is a read-only memory 4
The interactive processing program stored in 2 is executed, and the work or data that can be set on the interactive data input screen is displayed in the menu format in the CRT / MDI unit 50.
Is displayed on the display device 53. In addition, a machining program is created from the data thus input, and the overall motion trajectory of the tool is displayed as a background animation. In the read-only memory 42, an interactive data input screen and the like are stored in addition to the interactive processing program. The random access memory 43 stores various data for dialogue in addition to the alarm message. The non-volatile memory 44 is backed up by a battery (not shown), and stores program data and machining programs that should be retained even after the power is turned off. The input / output interface 45 is connected by RS232C to the debug means 16 whose hardware is constituted by, for example, a personal computer. Video R
The AM 46 is a RAM that can be accessed at high speed, and stores graphic data for animation display when a cutting simulation of the machine tool 30 is performed based on a machining program stored as an NC sentence in the non-volatile memory 44. The graphic control circuit 47 is a video RAM
The graphic data stored in 46 is converted into a signal for display and output.

Further, the graphic control circuit 51 of the CRT / MDI unit 50 which takes a human interface with the operator converts a digital signal output from the processor 21 or the like into a signal for display and outputs it. The switch 52 switches the display signal output from the graphic control circuit 47 or the graphic control circuit 51 and supplies it to the display device 53. The keyboard 54 is composed of symbolic keys, numerical keys and the like, and the necessary graphic data and NC data are input using these keys. The software key 55 is a command key whose function changes according to a system program or the like, and the function name and the like are displayed on the display device 5.
3 is displayed at a predetermined screen position.

In the display device 53, the display signal from the graphic control circuit 47 is processed by the interactive processor 41, and the background animation is displayed by the created program data. Similarly, in the signal for display from the graphic control circuit 51, the shape, the processing conditions, etc. are displayed when the processing program is created interactively.

[0026]

As described above, according to the present invention, it becomes possible to see the alarm messages of various boards connected to the bus via the bus. Therefore, the system hangs up and the failure diagnosis system is executed. It is possible to diagnose the failure of the board that does not work or the board that does not have the failure diagnosis function by itself, and improve the debugging function of the numerical control system.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a numerical control system having a debug function according to the present invention.

FIG. 2 is a block diagram showing the configuration of an interactive numerical control device that is an embodiment of the present invention.

FIG. 3 is a diagram showing a configuration of a conventional numerical control system having a debug function.

[Explanation of symbols]

 11 Bus 12 Numerical Control Unit 13 Programmable Machine Controller 14 Man Machine Interface Controller 15 Graphic Board 16 Debug Means

Claims (3)

[Claims] 1. A numerical control system having a debug function, comprising: a numerical control device having a processor for controlling the entire numerical control system and a servomotor; and a machine tool receiving a command from the numerical control device. A programmable machine controller having a processor for controlling, a man-machine interface controller having a processor that functions as an interface with an operator, a graphic board having a processor for performing graphic control, and the numerical control A bus connected to the device, the programmable machine controller, the man-machine interface controller and the graphic board for transferring data among them, the numerical controller, the programmable machine Other numerical control device, the programmable machine controller, and the man machine, which are connected to the computer controller or the man machine interface controller by a communication line and are connected to the bus via the bus. A numerical control system comprising: an interface controller or a debug means for accessing the alarm message storage area of the graphic board. 2. The debug means is connected to the man-machine interface controller, and the numerical control device and the programmable controller are connected via the bus.
The numerical control system according to claim 1, wherein the numerical control system is configured to access an alarm message storage area of a machine controller or the graphic board. 3. The numerical control system according to claim 1, wherein the debug means comprises a personal computer and a debug application program.