JPS5866109A - Instruction word processing method - Google Patents

Abstract

PURPOSE:To facilitate programming, by discriminating and processing continuously a series of programs, where instruction words for sequence control, numerical control, DDC control, etc. are mixed, in the processing method of the stored program system. CONSTITUTION:A program processing mechanism 3 reads out a series of programs of independent or mixed instruction words for the sequence control, the numerical control, the DDC control, etc., which are written in a memory 2, through a memory bus line 6 and performs the discrimination processing of the sequence control, the block processing, and the branch processing through a central processing device 1. An input controller 4 and an output controller 5 to be controlled are connected to the central processing device 1 through an interface bus line 7. Thus, since input and output data of control blocks of blocks of the numerical control and the DDC control whose execution and nonexecution are determined by the sequence control processing in the same series of programs are transferred to the next processing blocks, a general-purpose processing adapted to the control for actual apparatus and devices is possible.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a stored program type programmable controller, which can process sequence %tlJl1M], numerical control, and DDC control in a mixed manner, and according to sequence processing instructions during program execution.

It relates to a kill shop computer that changes and processes data values for numerical control and DDC control.

Even in programmable logic controllers, in order to effectively control the controlled object, it is necessary to perform not only logical operations but also simple η numerical calculation functions.
IO-ra had appeared. However, in the case of a logic controller with a numerical performance function (1), a sequence program and a numerical calculation program must be created separately, and the execution of each program requires mutual interruption or return. (2) Due to the stored program method, the order of execution at the time of programming is 7. This "me numerical calculation 2°°:" f-1 is the set value of 1°.7
Yes・-,y-)r.

``Change according to the control status, b Member 7＞: Difficulty 1・(3
)1 Programs that include both sequence control and numerical calculation cannot be processed in the same way. It has the following problems, is difficult to program, and lacks versatility.

The object of the present invention is to provide sequence control, numerical system a, nD in store-1' program type control.
A series of programs including c-control are processed in the same way, and numerical control and DD are performed by sequence control processing in the program.
An object of the present invention is to provide a jump computer having a program processing mechanism capable of selectively processing input card values under C control.

In the present invention, in a programmable controller that processes a series of programs in which sequence control, numerical control, and DI)C control are mixed, the program processing is performed by element processing to determine whether the sequence control is 0 or 1. processing), block processing (processing of one meaningful unit in numerical control and DDC control), and branch processing (processing of passing elements and control numerical data to the next block according to the connection relationship of the blocks), The present invention is characterized in that each of the above-mentioned processes is performed in the same process regardless of the above-mentioned processes. In addition, since each of the above processes can be performed in the same process, the input/output data of numerical control and DDC control blocks whose execution or non-execution is determined in the sequence control process in the same series of programs is passed to the next processing block. Since processing can be performed, versatile processing can be performed that is compatible with the control of actual equipment and devices.

Furthermore, complex program switching, interrupts, and
Recovery processing is no longer necessary. Furthermore, by the above three basic processing,
It is characterized in that it can process only sequence control, numerical control, DDC control only, and a mixture of both.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows the configuration of an embodiment of the present invention. The program processing mechanism 3 reads out a series of programs written in the memory 2 via the memory path line 6 for sequence control, numerical control, and DDC control, either alone or in combination.1. Each of the above-mentioned processes is performed via the central processing unit 1. Further, the input control device 4 and output control device 5 to be controlled are connected to the central processing unit 1 via an interface path line 7. The present invention is different from conventional sequence logic controllers or controllers with numerical calculation functions.

It is located in the program processing mechanism 3.

FIG. 2 shows the configuration of the program processing mechanism 3.

A program counter 8% indicating the address of the program created on the memory 2; an instruction register 9 for storing the designated program; a branch decoder 10 for determining the branch processing code in the instruction word of the program. A branch processing mechanism 11 performs branch processing corresponding to the contents of the decoder 10, and an element decoder 12 determines whether the instruction word in the instruction register 9 is only for sequence control, or has a processing block for numerical control or DDC control. , an element processing mechanism 13 that performs sequence control processing in the case of a sequence control command according to its contents. 0 of element processing mechanism
14 is a link decoder that selects processing blocks 15 to 17 corresponding to the DDC control processing command.

FIG. 3 shows the configuration of the branch processing mechanism 11. Corresponding to the code determined by the branch decoder 10.

A data gate 23 that transfers the contents of the output data register group 22, which stores the output data of the processing block processed last time, to the input data register group 2, which stores the input data of the processing block processed this time; Output counting register 19 for managing and storing the number of registers storing valid data values of the register group 21. The memory contents of the output count register 19 are input to the input register group 2]
Input count register 1 that manages the number of effective registers in
The stored contents of the input data register group 21 are transferred to the intermediate register 71 according to the count gate 20 and the branch code to be transferred to the input data register group 21.
□Transfer to 5, reverse transfer, intermediate 1 data gate 2
4 and an intermediate count register group 25 for managing the number of valid output data registers for each program branch position.

FIG. 4 shows an example of a conventional sequence control circuit.

The present invention can also process a circuit that only performs sequence control as shown in FIG.

FIG. 5 shows an embodiment using only numerical control and DDC control. The processing blocks 27 to 41 are meaningful processing units of the control, and one processing block is one numerical control, I')
Perform DC control. Alternatively, one processing block may perform the same processing as the processing blocks 27 to 41. In the relationship between the processing block 27 and the processing block 28, the input data value of the processing block 28 is the same as the output data value of the processing block 27. Therefore, in processing the publication 1 book 28, the branch processing mechanism 3 is busy in the configuration shown in FIG.
After determining the branch [-] by 0, the current game corresponding to the "-" branch]20 and the data gate 23 are set to 21! The contents of the output count register] 9 of the pass processing block 27 are transferred to the input count register 18. Further, the contents of the output data register group 22 are transferred to the input data register group 21 by the data gate 23. Processing block 28
is numerically controlled by the contents of the input data register group 21, D
Perform DC control. After processing, processing block 28 transfers the output data number to output count register 19 and the output data value to output data register group 22.

In processing 34, there is no connection between processing blocks, but processing block 37 performs processing using the output result of processing block 29.33.
Processing for passing the number of output data and the output data to the processing block 37 is performed.

The processing blocks, or the control contacts, and the mutual connections between the coils can be broken down into the basic branches of FIG. There are horizontal input branch processing 44, vertical input branch processing 45, and vertical output branch processing 46. Any branch can be synthesized by combining the previous and basic branches. The horizontal input branch processing 44 has been described above.

The vertical input branch processing 45 is a process of adding the contents of the intermediate count register group '26 to the input count register 18, and adding the contents of the registers of the intermediate data register group 25 by the amount of the intermediate count register 26 to the input data register group 21. . The vertical output branch processing 46 transfers the contents of the input count register 18 to the intermediate count register group 25 corresponding to the position of the processing branch, and transfers the contents of the input data register group 21 to the input count register 18 and the intermediate data register group 25. Transfer to.

FIG. 7 shows a processing example of a program in which sequence control, numerical control, and DDC control are mixed. The processing of the processing blocks is basically the same as that in FIG. 5, except that sequence control is included. Noken contact 1 is
After the branch processing mechanism 11, sequence control processing is performed by the element processing mechanism. If the result is ON, the contents of the input count register 18 are transferred to the output count register 19 as a substitute for the processing block. If the result is OFF, the contents of the output count register 18 are set to 0. By performing the above-mentioned no-ken processing, the contact point A47°, the contact point B49. Depending on the on/off state of contact C52, processing block S53 includes processing block P48, processing block Q50 . Output data from any one of processing blocks R51, two processing blocks, or three processing blocks is input as input data.

In this way, in a mixed program of sequence/sequence control, numerical control, and DDC control, by managing the input/output values and data values of the processing block, the processing block can be As long as you input the required data or valid data for sequence control processing! control, T')I)C control can be performed. From the above features! It is possible to make effective use of i fQ 7'o blocks, and compared to the case sequence control 1f,'+A, it has the effect of allowing control program processing to be performed in accordance with the actual sacred treasure or device.

[Brief explanation of the drawing]

FIG. 1 is a configuration example of the present invention, FIG. 2 is a configuration example of a program processing mechanism, FIG. 3 is a configuration example of a branch processing mechanism, FIG. 4 is a sequence program processing example, and FIG. 5 is a numerical control, DDC
Control control program processing drug Figure 6 is a branch basic branch diagram, 7th
The diagram shows sequence control, numerical control, and DDC control program processing.

Claims (1)

[Claims] 1. An instruction word processing method that is characterized by identifying each of a series of programs in which multiple types of instruction words such as sequence control, numerical control, DDC control, etc. are mixed in a stored program type processing method and sequentially processing them. .