JPS6149209A - Program execution system of numerical controller - Google Patents

Abstract

PURPOSE:To omit a decoding process, etc. and to increase the program processing speed by registering previously a subprogram, etc. to a memory in the machine words of a processor and setting the processor under a machine word processing mode after discriminating said machine words in a call instruction mode. CONSTITUTION:A numerical controller NC contains a processor 10, a tape leader 12, a manual data input device 14, etc. together with a ROM107 storing an NC control program, etc. and a RAM18 containing areas 18a, 18b, etc. storing a subprogram and a macroprogram. The subprogram, etc. compiled into machine words are stored in the area 18b. The processor 10 discriminates whether or not the program number to be called out is equal to a program described in the machine words. If the program number is described in the machine words, the procedure of the processor is changed to a machine word processing mode. Then the subprogram stored in the area 18b is executed at and after the head part. When an NC program language is used for description, this language processing is continued.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a program execution method in a numerical control device.

Conventional technology Conventional numerical control devices also utilize arithmetic functions in subprograms, macro programs, etc., functions to control program flow such as GO-70 statements, functions such as argument passing, etc. to allow machine manufacturers and This allows end users to create their own subprograms and macro programs to improve the functionality of the numerical control device. Examples include programs that control the movement of machine tools, such as ATC cycles and measurement cycles, and programs that control the content displayed on the CR7 screen, such as interactive input methods. Although it is certainly possible to implement complex functions using subprograms and macro programs, one drawback is that subprograms and macro programs are not compatible with the main program (meaning an NC command program given in the form of a command tape or external memory, etc.). ), it is a high-level inkpreter language, so it takes a long time to execute.

FIG. 4 is an explanatory diagram of a program execution system in a conventional numerical control device. 1 is a main program for instructing a series of machining operations punched on a command tape or stored in a magnetic bubble memory; It includes multiple blocks written in the NC programming language. 2 is a macro program with program number 1000, which includes a plurality of blocks written in the NC programming language, which is also a higher-level language, and is stored in advance in a magnetic bubble memory.

3 is a lower control program for executing each command of the main program and macro program written in the NC programming language, and a plurality of control programs corresponding to each command are prepared.

The processor starts decoding from the beginning of the main program 1 and transfers control to a necessary control program according to the decoding result. When the processor has macro program call instruction 065 in main program 1,
The macro program 2 with the following program number (PlooO) is searched for, and this macro program 2 is executed from the beginning. In this case as well, the necessary control program is selected according to the decoding result and control is handed over to it.

At the end of the macro program 2 there is a code M99 indicating the end of the program, and when the processor determines this, it returns to the block next to the read instruction of the main program 1 and continues processing the subsequent blocks.

In this way, in the past, where macro programs were written in the NC programming language, which is a high-level language, the processor had to read each block of the macro program and select and execute the necessary control program according to the decoding results. Processing will be slow because of this. especially,
If there is a GO-To statement in macro program 2, GO
The entire macro program 2 must be searched to find the destination specified by the -To statement (in the illustrated example, the block with sequence number 100), which further slows down the processing speed.

Problems to be Solved by the Invention The present invention solves these conventional problems, and its purpose is to increase the execution speed of subprograms and macro programs.

Means for Solving the Problems In order to solve the above problems, the present invention provides a program execution system in a numerical control device in which a processor decodes a program and executes a predetermined numerical control. A subprogram or macro program called by a call instruction is written in advance in machine language of the processor and stored in memory, and it is possible to determine that the subprogram or macro program is written in machine language. The subprogram or macro program to be called when there is a call command is
If it is written in H, the processing of the processor is changed to machine language processing, the subprogram or macro program in the machine language is executed, and after execution, the original program is returned.

Embodiment FIG. 1 is a block diagram showing an example of the hardware configuration of a numerical control device of the present invention, in which 10 is a processor;
The peripheral circuits are interconnected by a bus 11 including an address bus, a data bus, and a control bus. 12
is a tape league, the main program is perforated NC
A tape or subprogram or macro program is for reading the perforated tape 13. The subprograms or macro programs punched on this tape 13 are written in the NC programming language as in the past, or in the PASCAL or BASIC language.

14 is a manual data input device (MDI) having various keys.
), various commands and the like to the processor 10 are input from here. 15 is a cassette memory in which the main program is stored, and 16 is a display device such as a CRT. 17 is R
The OM stores an NC control program for executing commands of each block in the NC program, and a compiler for translating the NC programming language, PASCAL language, or BAS r C language into machine language. When using only PASCAL language as a high-level language, P
It is sufficient to prepare only a compiler for the ASCAL language. 18 is a RAM in which subprograms and macro programs are written. It has areas 13a and 18b for processing a, and other areas for use in calculations, for example. Area 18a is an area where subprograms or macro programs written in the NC programming language are stored, and area 18b is an area where subprograms or macro programs compiled into machine language are stored. 19 to 21 are the X axis, Y axis,
A Z-axis position control circuit for each X-axis in response to commands from the processor 10.

Drives Y-axis and Z-axis motors 22-24.

If you want to register a subprogram or macro program written in the NC programming language as is in the RAM 18, set the tape 13 on which the subprogram written in the NC programming language has been punched into the tape reader 12, and then Press the subprogram registration key or macro program registration key. In addition, when registering a machine language subprogram or macro program in the RAM 18, use the NC programming language, PASCAL language, BASIC
A tape 13 on which a subprogram etc. written in any language has been punched is set in the tape reader 12, and the MD 114 is inserted into the tape reader 12.
Press the machine language subprogram registration key or machine language macro program registration key.

The flowchart in Figure 2 shows an example of the subprogram or macro program registration process. First, it is determined whether the registration is in machine language, and if the registration is in machine language, the tape reader The subprogram or macro program read from ROM 12 is translated into machine language by the compiler stored in ROM 17, and this is translated into machine language by the compiler stored in ROM 17.
is stored in the area 18b. Furthermore, it is stored in correspondence with the program number of the stored subprogram or macro program (this is usually punched at the beginning of the tape 13) that it is in machine language. On the other hand, if you want to register the NC programming language as is, the tape reader 12
The subprogram or macro program read from is stored as it is in the area 18a of the RAM 18, and this is stored in the NC in accordance with the program number of the stored subprogram, etc.
Remember that it is written in a programming language.

Note that when compiled as described above, even if there is a GO-70 statement in a subprogram or macro program, the jump destination will be determined in advance, so the processing speed of the statement will be faster than in the conventional inkpreter method. improves.

When the main program number is input from the MD 114 and numerical control is activated, the processor 10 loads the cassette memory.
The main program of the program number stored in 5 is read from the first block, and the commands included in the block are decoded. For example, 000 x 1 in a block
If the command X1234 is included, the data X1234 is given to the NC control program corresponding to this type of command to execute positioning control. Furthermore, if macro program call command 065 and subprogram call command M98 are included, the macro program or subprogram corresponding to program number P placed immediately after these commands is read out from RAM 1B and executed.

In this case, as shown in FIG. 3, the processor 10 first determines whether the program number to be called is a subprogram or macro program written in machine language, and then determines whether the program number to be called is a subprogram or macro program written in machine language. In some cases, the processing is changed to machine language processing, and the subprogram or macro program corresponding to the program number stored in the area 18b of the RAM 18 is executed from the beginning. On the other hand, if the called subprogram or macro program is written in the NC programming language, the current processing, that is, the processing in the NC programming language, continues. Note that a machine language code indicating termination is provided at the end of a subprogram or macro program written in machine language, and the processor 10 executes this code to return to the original main program position.

Also, the machine language processing is ended and changed to NC program processing.

In the above embodiment, a subprogram or macro program call instruction is provided in the main program, but in the same way as a conventional subprogram or macro program, a call instruction is provided in another subprogram or macro program. Also good. Further, the compilation using PASCAL, BASIC, etc. may be performed separately in a device other than the numerical control device (for example, an automatic programming device), and the outputted machine language may be written in a ROM and implemented in the numerical control device.

As described in detail, according to the present invention, the subprogram or macro program is written in the machine language of the processor and registered in advance in the memory, and the subprogram or macro program to be called when there is a call instruction is executed. When it is determined that a program is written in machine language, the processing of the processor is changed to machine language processing and a subprogram or macro program is processed. It is possible to omit processes such as decoding the internal NC program language and handing over control to the control program, which has the effect of increasing the processing speed. In addition, if a subprogram or macro program is written in NC programming language instead of machine language, processing in machine language is not performed and the same processing as before is performed, so subprograms or macro programs written in NC programming language It is also possible to register and execute macro programs in that format, minimizing changes to existing systems.

In addition, subprograms or macro programs can be registered in memory in machine language using conventional NC programming language or other high-level language such as PASCAL.

By compiling subprograms or macro programs written in BASIC, etc. in advance, converting them into machine language, and registering this in memory, end users who are unfamiliar with machine language can create subprograms or macro programs. This is preferable in terms of protecting the numerical control device, as it is easier to do so, and the check function of the high-level language makes it possible to reduce major mistakes compared to when programming directly in machine language. In addition, by writing in a high-level language such as PASCAL or BASIC and compiling it to obtain machine language, it is possible to realize special functions that were impossible with conventional NC programming languages. be.

[Brief explanation of drawings]

FIG. 1 is a block diagram of main parts showing an example of the hardware configuration of a numerical control device implementing the present invention, FIGS. 2 and 3 are flowcharts showing an example of the processing of the present invention, and FIG. It is an explanatory diagram. 10 is a processor, 13 is a tape on which subprograms or macro programs are punched, 15 is a cassette memory that stores the main processor, 17 is a ROM that stores an NC control program and a compiler, and 18 is a RAM.
It is.

Claims (1)

[Claims] In a program execution method in a numerical control device in which a processor decodes a program and executes predetermined numerical control, a subprogram or a macro program to be called by a call instruction provided in another program is prewritten in the machine language of the processor. In addition to writing and storing it in memory, it is possible to determine that the subprogram or macro program is written in machine language, and the subprogram or macro program to be called when there is a call instruction is written in machine language. In the numerical control device, the processing of the processor is changed to machine language processing to execute the subprogram or macro program in the machine language, and the program returns to the original program after execution. Program execution method.