JPH08286712A - Editing system for sequence program - Google Patents

Abstract

PURPOSE: To provide an editing system which can edit a sequence program that is carried out by a PC(programmable controller) while carrying out the program. CONSTITUTION: A writable execution program store means 1 stores an execution sequence program 1a. A program execution means 2 carries out the program 1a and controls the machine side. At the same time, a writable editing program store means 3 stores an editing sequence program 3a. Then an editing means 4 of an external controller 7 such as an automatic programming device, etc., edits the program 3a based on the editing data which are inputted via the screen of a display device 4a and a keyboard 4b. When a rewriting command is received through the keyboard 4b, etc., a rewriting command means 5 gives a rewriting execution command to a rewriting execution means 6. Thus the means 6 rewrites the contents of the program 1a into those of the program 3a.

Description

Detailed Description of the Invention

[0001]

The present invention relates to a PC (programmable
The present invention relates to a sequence program editing method for editing a sequence program executed by a controller, and particularly to a sequence program editing method for performing editing during debugging.

[0002]

2. Description of the Related Art Normally, a sequence program created is actually operated and debugged before shipping. When a point to be edited is found by this debugging, the operator edits the part on the edit screen. In this case, conventionally, the execution of the sequence program is temporarily suspended, the editing is performed, and then the sequence program is executed again.

[0003]

However, interrupting the execution of the sequence program each time editing is very inefficient.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a sequence program editing system capable of performing editing while executing a sequence program.

[0005]

According to the present invention, in order to solve the above problems, a PC (programmable controller) is used.
In a sequence program editing method for editing a sequence program to be executed by a writable execution program storing means for storing the execution sequence program, and a program executing means for executing the execution sequence program. A writable editing program storage means for storing the editing sequence program; an editing means for editing the editing sequence program; a rewriting instruction means for instructing rewriting of the execution sequence program; A rewriting command is provided to rewrite the execution sequence program to the contents of the editing sequence program, and a sequence program editing method is provided.

[0006]

The writable execution program storing means stores the execution sequence program, and the writable editing program storage means stores the editing sequence program. The program execution means executes the execution sequence program in the execution program storage means. On the other hand, the editing means edits the editing sequence program. When the rewriting command means commands rewriting of the execution sequence program,
In response to this rewriting command, the rewriting execution means rewrites the execution sequence program with the contents of the editing sequence program.

This enables editing without interrupting the execution of the sequence program.

[0008]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing the concept of the function of this embodiment.
Writable execution program storage means 1 such as RAM
The execution sequence program 1a is stored in. The program execution means 2 executes the execution sequence program 1a and controls the machine side. on the other hand,
Writable editing program storage means 3 such as RAM
Stores an editing sequence program 3a. The editing means 4 of the external control device 7 such as an automatic programming device edits the edit sequence program 3a based on the edit data input using the screen of the display device 4a or the keyboard 4b.

When a rewriting command for the execution sequence program 1a is issued by the keyboard 4b or the like, the rewriting command means 5 commands the rewriting execution means 6 to execute rewriting. Then, the rewriting execution means 6 rewrites the execution sequence program 1a into the editing sequence program 3a at the timing of ending one scan, for example.

FIG. 2 shows a CNC (numerical controller) of this embodiment.
It is a block diagram of the whole hardware. Processor 1
Reference numeral 1 denotes a processor which is the center of control of the entire CNC 10, reads a system program stored in the ROM 13 via the bus 19, and executes control of the entire CNC 10 in accordance with this system program.

The shared RAM 12 is composed of the CNC 10 and the PMC 2.
It is a RAM for exchanging data with 0, and exchanges data with each other via this shared RAM 12. At the same time, it stores the data required for access from both sides.

The RAM 14 stores temporary calculation data, display data and the like. For the non-volatile memory 15, a CMOS backed up by a battery, a flash ROM, or the like is used, and a tool correction amount, a pitch error correction amount, a machining program, parameters, and the like are stored. In addition, the non-volatile memory 15 also stores parameters necessary for the PMC 20 side.

The graphic control circuit 16 converts digital data such as the current position of each axis, alarms, parameters and image data into an image signal and outputs it. This image signal is sent to the display device 31 of the CRT / MDI unit 30 and displayed on the display device 31. The display device 31 has a P
Parameters on the MC 20 side, ladder diagrams, etc. can be displayed. The data at this time is sent from the PMC 20 via the shared RAM 12.

The interface 17 receives data from the keyboard 32 in the CRT / MDI unit 30,
It is passed to the processor 11. Also, data to the PMC 20 side can be input from the keyboard 32, and the data is sent to the PMC 20 side via the shared RAM 12. The display device 31 and the keyboard 32 perform editing operations of a sequence program, which will be described later.

An automatic programming device 40 is connected to the interface 18. The sequence program created by the automatic programming device 40 is read through the interface 18 and read by the PMC 20.
Sent to In addition, editing the sequence program is
This can also be done by this automatic programming device 40. Further, the interface 18 is connected to an external device such as a paper tape reader, a paper tape puncher, a paper tape reader / puncher, a printer, etc., which are not shown. The processing program is read from the paper tape reader. Further, the processing program edited in the numerical controller 10 can be output to the paper tape puncher.

The processor 11 and the shared RAM 12,
Elements such as the ROM 13 are connected by a bus 19. In the figure, the axis control circuit for controlling the servo motor, servo amplifier, spindle control circuit, spindle amplifier,
The manual pulse generator interface etc. are omitted.

The PMC (Programmable Machine Controller) 20 is a kind of PC (Programmable Controller) and is built in the CNC 10. PM
The C20 has a processor 21 for PMC. The processor 21 is connected to the shared RAM 12 by the bus 26, and the shared RAM 12 is coupled to the bus 19 of the CNC 10. Further, the ROM 22 is coupled to the bus 26. A management program for controlling the PMC 20 is stored in the ROM 22. Also, this ROM
The flash ROM 22 can be rewritten into a new sequence program after being debugged and edited while the sequence program is created and stored in advance by using the flash ROM.

Input / output signals are stored in the RAM 23,
The contents are rewritten as the sequence program is executed. Further, the RAM 23 is provided with an area of the sequence program for execution and an area of the sequence program for editing during the editing operation of the sequence program. A CMOS, a flash ROM, or the like backed up by a battery is used as the non-volatile memory 24, and a sequence program created by the automatic programming device 40 is stored therein. The new sequence program after editing is also stored here.

The sequence program is generally written in a ladder language, but may be written in a high level language such as Pascal. The sequence program stored in the non-volatile memory 24 is transferred to the RAM 23 during operation, and the processor 21 reads and executes the program in the RAM 23. Further, the sequence program can be displayed on the display device 31. In addition to the sequence program, the non-volatile memory 24 stores data to be retained after power-off.

The I / O control circuit 25 is connected to the bus 26, converts the output signal stored in the RAM 23 into a serial signal and sends it to the I / O unit 27. Also, a serial input signal from the I / O unit 27 is converted into a parallel signal and sent to the bus 26. The signal is stored in the RAM 23 by the processor 21. The input / output signals stored in the RAM 23 and the data stored in the non-volatile memory 24 can be displayed on the display device 31 of the CRT / MDI unit 30.

The processor 21 receives a shared R from the CNC 10.
A command signal such as an M function command or a T function command is received via the AM 12, and once stored in the RAM 23, the command is RO
Processing is performed according to the sequence program stored in M22 and output to the I / O unit 27 via the I / O control circuit 25. The hydraulic signal, pneumatic device, and electromagnetic device on the machine side are controlled by this output signal.

Further, the processor 21 receives an input signal such as a limit switch signal on the machine side from the I / O unit 27 and a signal from an operation switch on the machine operation panel, and temporarily stores the input signal in the RAM 23. Input signals that do not need to be processed by the PMC 20 are sent to the processor 11 via the shared RAM 12. Other signals are processed by the sequence program, some signals are output to the CNC side, and other signals are output signals from the I / O unit 27 to the machine side via the I / O control circuit 25. To be done.

On the other hand, the sequence program can include instructions for controlling the movement of each axis. When these instructions are read by the processor 21, they are sent to the processor 11 via the shared RAM 12 to control the servo motor. Similarly, the spindle motor and the like can also be controlled by a command from the PMC side.

Next, the specific processing of the sequence program editing method of this embodiment will be described. At the time of debugging, the execution sequence program in the RAM 23 is executed. At the same time, the editing sequence program also stored in the RAM 23 is edited on the screen of the display device 31. The sequence program for execution and the sequence program for editing are read from the ROM 22 before debugging, and RA
Written to M23.

FIG. 3 is a diagram showing an example of the editing screen of the sequence program being debugged. The edit screen 50 is
Here, it is assumed that the image is displayed on the screen of the display device 31 shown in FIG. When editing is performed by the automatic programming device 40 shown in FIG. 2, the edit screen 50 is displayed on the screen of the automatic programming device 40. The edit screen 50 is a ladder program as a sequence program.
It is composed of a program display section 51 for displaying a program and a soft key menu section 52 provided at the bottom of the screen.

In this display state, for example, when the operator wants to edit the coil 54, the operator places the cursor 53 at the position of the coil 54. And
If the graphic display of the coil 54 is desired to be changed, the desired menu of the soft key menu section 52 is selected. As a result, the screen display of the coil 54 is changed to the selected figure. On the other hand, if it is desired to change the address R0000.0 to another address, for example, R0000.3, by newly inputting it with the keyboard 32, the screen R000
0.0 is changed to R0000.3.

As described above, in most cases, changing the coil affects other signals of the ladder program. Therefore, it is necessary to search and change the affected signal. In this embodiment, the signal affected by the changed signal can be automatically searched.

FIG. 4 is a diagram showing an example of the edit screen after the search operation. Here, the address of the coil 54 is, for example, R
The state after changing to 0000.3 is shown. When the change is made, the PMC 20 side searches for a signal having the same address as the address R0000.0 of the coil 54 before the change,
The cursor 53 is automatically moved to that position. Here, the contact 55 is the search target. The operator
The address of the contact 55 on which the cursor 53 is placed is changed to, for example, R0000.3. After that, editing is performed by the same procedure. The search process may be performed after the operator gives a command.

When the editing is completed, the operator
A rewriting command of the sequence program is issued by the keyboard 32 or the like. When this rewrite command is issued, PM
On the C20 side, the sequence for execution that is currently being executed
The program is collectively rewritten to the edited sequence program at the timing of the end of the scan.
As a result, at the time of the next scan, the newly edited sequence program is executed as the execution sequence program.

FIG. 5 is a flowchart showing the processing procedure of the processor 21 for performing such editing work. [S1] It is determined whether or not there is a key input on the keyboard 32, and if there is, the procedure proceeds to step S2, and if not, step S
Repeat 1. [S2] It is determined whether or not an editing operation is performed. If it is performed, the process proceeds to step S3, and if not, the process proceeds to step S8. [S3] The edited signal influences other signals like the output signal (coil), and it is judged whether or not the search is necessary. If it is necessary, the process proceeds to step S4, and if not. Go to step S7. [S4] The search is executed. [S5] It is determined whether or not there is a signal to be searched, and if there is a signal, the process proceeds to step S6, and if not, step S7.
Proceed to. [S6] The retrieved signal is changed by the operator's operation. [S7] The editing sequence program in the RAM 23 is rewritten to the contents on the screen, and the process returns to step S1. [S8] It is determined whether or not there is a rewriting command. If there is a rewriting command, the process proceeds to step S9, and if not, the process proceeds to step S10. [S9] The sequence program for execution in the RAM 23 is collectively rewritten with the sequence program for editing. [S10] It is determined whether or not there is an instruction to end editing,
If there is, the flow chart ends, and if not, step S
Return to 1.

As described above, in this embodiment, the area of the sequence program for execution is stored in the memory such as the RAM 23,
The sequence program area for editing is provided so that the execution sequence program can be overwritten with the edited sequence program all at once, so that the sequence program can be edited without interruption. it can. As a result, it is possible to edit while confirming the operation state of the sequence program. In particular, in the present embodiment, batch rewriting is performed at the end of one scan, so there is no effect on the execution of the sequence program.

Further, in the present embodiment, when the change has an influence on other signals, the affected signal is automatically searched, so that the working efficiency is further improved.

[0033]

As described above, according to the present invention, the execution sequence program is stored in the writable execution program storage means, and the editing sequence program is stored in the writable edit program storage means.
While executing the execution sequence program in the execution program storage means, the editing sequence program is edited, and the execution sequence program is rewritten to the contents of the editing sequence program by the rewriting command. Editing is possible without interrupting the execution of the program.

[Brief description of drawings]

FIG. 1 is a diagram showing a concept of functions of the present embodiment.

FIG. 2 is a block diagram of hardware of the entire CNC according to the present embodiment.

FIG. 3 is a diagram showing an example of an edit screen of a sequence program being debugged.

FIG. 4 is a diagram showing an example of an edit screen after a search operation.

FIG. 5 is a flowchart showing a processing procedure of a processor for performing editing work.

[Explanation of symbols]

 1 Execution Program Storage Means 1a Execution Sequence Program 2 Program Execution Means 3 Editing Program Storage Means 3a Editing Sequence Program 4 Editing Means 5 Rewriting Execution Means 10 CNC 11 Processors 20 PMC 21 Processors 22 ROM 23 RAM 30 CRT / MDI unit 31 Display device 32 Keyboard 40 Automatic programming device 50 Editing screen

Claims (6)

[Claims] 1. A PC (programmable controller)
In a sequence program editing method for editing a sequence program to be executed by a program, a writable execution program storage means for storing the execution sequence program, and a program execution means for executing the execution sequence program A writable editing program storage means for storing an editing sequence program; an editing means for editing the editing sequence program; a rewriting command means for instructing rewriting of the execution sequence program; A rewriting execution means for rewriting the execution sequence program to the contents of the editing sequence program in response to a rewriting command. 2. By changing the signal by the editing means,
2. The editing method for a sequence program according to claim 1, further comprising search means for searching for an affected signal in the editing sequence program. 3. The execution program storage means, the program execution means, the editing program storage means, and the rewriting execution means are provided on the PC side, and the editing means and the rewriting command means, 2. The sequence program editing method according to claim 1, wherein the editing method is provided in an external control device connected to the PC via a communication line. 4. The execution program storage means, the program execution means, the editing program storage means, the rewriting execution means, the editing means, and the rewriting instruction means are part of a program editing function on the PC side. The sequence program editing method according to claim 1, wherein the sequence program editing method is provided as follows. 5. The rewriting execution means is configured to perform the rewriting at the end of the scan of the execution sequence program.
Editing method of the described sequence program. 6. The sequence program editing method according to claim 1, wherein the rewriting execution means is configured to collectively perform the rewriting.