JPH02284205A - Simulation system for pc - Google Patents

Abstract

PURPOSE:To improve the developing efficiency of a sequence program by simulating the sequence program by using a personal computer. CONSTITUTION:An operation control means 12 is provided so that the sequence program 1 is executed artificially by the program executing means 11 of the personal computer 10 and the besides, display or operation can be handled similarly to a CP (programmable controller) 30. Further, a special function like the window function of the PC 30, etc., is controlled by a PC function control means 13, and the result of the simulation of these is displayed on a display device 22 or outputted to a printer 24 by a data output control means 14. Thus, because the development and the debug of the sequence program are executed by using the personal computer, the actual use of the PC at the time of the development of the sequence program is limited to the minimum, and the developing efficiency can be raised.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a PC simulation method, and more particularly to a PC simulation method for simulating a sequence program using a personal combination coater or the like.

[Conventional technology]

PCs (programmable controllers) used in machine tools, etc. have a large capacity for sequence programs, and after creating a sequence program, it is executed on an actual PC to simulate the sequence program. etc. [Problem to be solved by the invention] For this reason, the development of sequence programs always requires a PC.
As the main body becomes necessary and the capacity of the sequence program becomes large and complex, the time required to exclusively use the PC for developing the sequence program increases.

In particular, when a sequence program has a large capacity, one sequence program is often developed by many programmers. There is also a growing demand for rapid development of multiple sequence programs in accordance with the required specifications of individual users.

Therefore, if there are few PCs used for debugging, the time that programmers can use the PCs is limited, and the development of sequence programs is delayed. On the other hand, providing a large number of PCs imposes a heavy economic burden.

The present invention has been made in view of the above-mentioned points, and uses an ant, a personal computer, or the like.

[Means to solve the problem]

In order to solve the above-mentioned problems, the present invention provides a PC simulation method for simulating a sequence program of a PC (7" programmable controller), and includes a program execution means for executing a sequence program, a screen display and a key operation. A PC that has operation control means that displays and operates in the same way as the PC, and that reproduces the window functions and sequence program execution of the PC.
A PC simulation system is provided that is characterized by having a function control means and a data output control means for displaying simulated data on a display device or outputting it to a printer.

[Effect]

The sequence program is executed in a pseudo manner by the program execution means. In addition, display or operation may be
There is an operation control means so that it can be handled in the same way.

Furthermore, special functions such as the window function of the PC are controlled by the PC function control means. The results of these simulations are displayed on a display device or output to a printer or the like by the data output control means.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 is a block diagram of a PC simulation method according to the present invention. After the sequence program 1 is created, it is debugged, and after completion, it is written into the ROM and implemented in the actual PC 30 to control the machine tool and the like. The sequence program 1 is written in ladder language or C language.

Here, a case where the program is written in C language will be explained as an example.

Simulation program 2 runs sequence program 1 not on PC 30 but on personal computer 1.
0 is a program that cannot be simulated. The functions of the simulation program 2 are divided into a program execution means 11, an operation control means 12, a PCC function control means 13, and a data output control means 14. Here, it is assumed that the simulation program 2 is also created in C language.

The program execution means 11 executes the sequence program 1 in the same way as the PC 30. The actual sequence program is basically READ Xo, 1
(IAND Yo, 2 (20RX
o, 4 (3 WRITE R200, 1 (4) Here, instruction (1) is a read instruction, instruction (2) is a logical bond instruction, instruction (3) is an instruction to obtain a logical sum, Instruction (4) is an instruction to write a result.There are other calculation instructions, but the instructions for the PC 30 can be replaced with normal instructions for the personal computer 10.In addition, instructions that cannot be replaced alone are personal instructions. Create as a subroutine of computer IO.

Here, the personal computer 10 has a 16-bit configuration, and a main memory of about IM bytes is enough to perform the functions of the present invention, and personal computers of this size are easily available on the market.

The program execution means 11 executes the sequence program 1, and the result is stored in the internal memory of the personal computer 10 (not shown), and
At the same time, it is stored in the hard disk 21.

The operation control means 12 is for processing a sequence program on the personal computer 10 so that the display or key operation matches as much as possible with the actual PC 30, and controls the sequence program 11 etc.
It is displayed on the display device 22 in the same format as C30. this is,
Since the display device used in the PC 30 and the display device 22 basically use the same CRT, they can be easily displayed.

Further, in order to make the keyboard 23 operate in the same manner as the PC 30, the keys of the keyboard 23 are assigned to the keys of the PC 30. These assignments are made by the operation control means 12.
Set as allocation data inside. The assignment data is for assigning which key on the keyboard 23 corresponds to the operation key of the PC 30.

Furthermore, input signals from the PC 30 can also be assigned to keys on the keyboard 23, so that input signals from the machine tool to the PC 30 can be performed using the keys on the keyboard 23. Further, input signals that do not change during debugging are input into the memory in the program execution means 11 together with the sequence program.

The output signal to the machine tool is displayed on the display device.

This displays the symbol of the output signal and its state using 1's and 0's, or displays numerical data as a number. If the sequence program is created in a ladder language, the ladder diagram can be displayed on the display device 22, and the output signal can be turned on or off by changing the brightness or color of the coil on the ladder diagram. can also be displayed.

The PC function control means 13 causes the window function of the PC 30 to be executed on the personal computer 10. The window function of the PC 30 can also be executed using the window function of the personal computer 10. It also has a function of reproducing the execution of the sequence program 11.

The data output control means 14 displays the simulation results on the display device 22 or outputs them to the printer 24. Since the simulation results are stored in the main memory or hard disk 21 inside the personal computer 10, they are displayed on the display device 22 or printed out on the printer 24 in response to a request from the keyboard 23.

As the O8 (operating system) of the personal computer 10, since the sequence program of the PC 30 is generally multitasking, an O8 such as "rUNIX" capable of multitasking is used.

In this way, sequence programs can be debugged and developed on a personal computer without using a PC.

In the above explanation, using a personal computer,
As explained by developing a sequence program,
In addition, a workstation or the like can also be used.

Even if a sequence program is debugged on a personal computer, a final check may be performed on the PC if necessary.

〔Effect of the invention〕

As explained above, in the present invention, a machine other than a PC, such as a personal computer, is used to develop and debug a sequence program. Therefore, when developing a sequence program, the use of an actual PC is minimized. development efficiency can be improved by limiting

[Brief explanation of drawings]

FIG. 1 is a block diagram of a PC simulation method according to the present invention. Sequence program simulation program Personal computer program execution means operation control means PC function control means data output control means hard disk display device keyboard printer C

Claims (3)

[Claims] (1) In a PC simulation method that simulates a sequence program on a PC (programmable controller), there is a program execution means for executing the sequence program, and an operation for displaying and operating screen displays and key operations in the same manner as the PC. A control means, a PC function control means for reproducing the window function of the PC and execution of the sequence program, and a data output control means for displaying the data after the simulation on a display device or outputting it to a printer. Characteristic PC simulation method. (2) The PC program editing method according to claim 1, wherein the sequence program or simulation program is created using C language. (3) The PC program editing method according to claim 1, wherein the simulation program is configured to run on a multitasking OS (operating system).