JPS62287302A - Multidimensional program selecting system - Google Patents

Abstract

PURPOSE:To instantaneously change a control program by only changing an input signal, and to improve the operation efficiency be selecting and starting a control program which has been stored in advance, through a selection sequence block which has been constituted multidimensionally. CONSTITUTION:First of all, when an input signal 1A is turned on, a signal is inputted to an output terminal 3A of an output terminal part 3, if an AND condition of a signal processing part 2 is formed, and a table 4A of a block selecting part 4 of the next stage is designated. As a result, a selection sequence block 5 (number S12) is selected as the next stage block, and started. In this way, the selection sequence block is constituted two-dimensionally, and also, if the block number which has been stored in the table 4A is that of the control block, as for the selection sequence black, a prescribed control program is executed one-dimensionally by the control block concerned in accordance with its input. Thereafter, in the same way, when an input signal 1B is turned on, signal is inputted to an input terminal 3B, a table 4B is designated and a selection sequence block 6 (number S7) is selected and started.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention (Field of Industrial Application) The present invention is used in an industrial control device, etc. in Plan 1-, and facilitates the modification and hierarchical operation of multiple control programs. This paper relates to a multidimensional program selection method.

(Prior Art) In recent years, industrial control devices such as programmable controllers that utilize microcomputers have become mainstream, and these control devices generally have a control system that defines various control and processing procedures. A 1-art program method is adopted in which programs are stored in advance. In addition, this type of control device is required to have the ability to easily change the control program so that the operating procedure of the plant can be quickly changed due to demands such as high-mix, low-volume production.

(Problem to be Solved by the Invention) However, changing the control program in a conventional control device is usually done by interrupting the control operation and downloading it from a host machine or a dedicated programming tool. In addition to taking time to load the plant, there was a problem in that the plant's operation efficiency deteriorated due to the need to temporarily stop the plant's operation.

In particular, if the hierarchical operating procedures of the control program, such as the manufacturing process or specific processing, are changed in response to a change in the product type, appropriate and prompt changes to the control program that match these changes are required. ing.

The present invention was proposed to solve the above-mentioned problems, and its purpose is to make it possible to instantly change the control program by simply changing the input signal, and to improve operational efficiency by eliminating the need to stop plant operations. It is an object of the present invention to provide a multidimensional program selection method that enables the selection and modification of control programs suitable for the hierarchical operation of an operating plant.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a plurality of selection sequences in which a plurality of control blocks storing a control program to be executed are serially, that is, multidimensionally provided. By selecting one of the blocks, the control program of the selected control block can be executed.

The selection sequence block includes a signal processing section that performs processing according to a predetermined processing procedure according to an input signal from the outside, and a selection sequence block or control to be processed next according to the output signal of this signal processing section. The present invention is characterized by comprising a next-stage block selection section that selects a block.

(Function) In the present invention, the selected sequence block or control block is selected for next processing through the signal processing unit of the first-stage selected sequence block and the next-stage block selection unit by an input signal from the outside, and is activated. be done. Here, if a control block is selected, the control program stored in the control block is executed. Further, when a selected sequence block is selected, selection processing is performed in the selected sequence block according to the input signal in the same manner as described above, and the next stage block is selected and activated.

On the other hand, all control programs necessary for plant operation are stored in advance in a plurality of control blocks, and these control blocks are selected through the multidimensionally configured selection sequence block as described above. , is activated.

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

FIG. 1 shows the basic configuration of a selection sequence block 1 (assuming its number is 81) used in the present invention. This selection sequence block 1 processes an input signal, and based on the processing result, It has a function of selecting and activating the next selection sequence block.

In the figure, 2 is a signal processing section, in which a processing procedure determined according to external input signals IA to IF is stored in advance. These processing procedures can be realized by hardware or rough 1-ware, and are configured, for example, by a combination of ``Un1'' and ``game 1'' in hardware, or by a combination of AND instructions in software. The output signal of this signal processing section 2 is rO
A binary signal of J or "1" is obtained, and this output signal is sent to the output terminal section 3 of the next stage.

The output terminal section 3 has output terminals 3A to 3F corresponding to each output signal of the signal processing section 2, and a next stage block selection section 4 corresponding to these output terminals 3A to 3F is provided at the next stage. ing. The next stage block selection section 4 has output terminals 3A to 3A.
3F, and these tables 4A to 4F contain the number of the next selection sequence block or control block (for example, 812.S7) that is selected as the next block of this selection sequence block 1. .P5.P4.S8.S2) are stored.

Here, as shown in the figure, block number S12 refers to selected sequence block 5, and block number S7 refers to selected sequence block 6. Although not shown, other numbers P5. Corresponding control blocks or selection sequence blocks are also prepared for r'4 and 38°S2. Here, a control program of plan 1- is stored in the control block, and this control program is executed by a start command.

Next, this operation will be explained. First, turn on the input signal IA.
As a result, when the UN and DO conditions of the signal processing section 2 are established, a signal is input to the output terminal 3A of the output terminal section 3, and the table 4A of the next stage block selection section 4 is designated. As a result, sequence block 5 (number 512) is selected as the first stage block.
is selected and activated. As a result, the 1-selection sequence block is configured two-dimensionally, and if the block number stored in table 4A is that of the control block,
The selection sequence block is one-dimensional, and a predetermined control convex gram is executed by the corresponding control block according to its output.

Thereafter, in the same way, by turning on the input signal IB, the output terminal 3
A signal is input to B, the table 4B is designated, and the selection sequence block 6 (number 87) is selected and activated.

Next, an application example of the present invention will be explained with reference to FIG.

In FIG. 2, the operating specifications of Plan 1- are assumed as follows.

"In a certain plant, one variety A and one variety B are created. Variety A is manufactured from process S2.S3, variety B is manufactured from process S3.S4, and process S2 is manufactured from process PL.
, P2, and step S3 consists of processing PL, P3,
Further, step S4 is the process P2. It consists of P3. Each of the steps 82 to S4 functions according to the processing results of the input signals 2A to 2C, respectively. ” In FIG. 2, 1.7 and 8.9 are selection sequence blocks, which receive input signals IA to IC and 2, respectively.
The next block is selected and activated based on A, 2B, and 2C. In this case, selection sequence blocks 7.8.9 are two-dimensionally arranged with respect to selection sequence block 1 in the first stage. Reference numerals 10 to 12 indicate control blocks, in which a plant control program is stored, and when activated, processes P1 to P3 are executed, respectively. Note that the input signals of 1 selection sequence block 1 are: IA is the "plant operation signal" and IB is the "plant operation signal".
is assigned to the "product type A selection signal", and IC is assigned to the "product type B selection signal".

In the above configuration, input signals IA and IB are ON.
Then, according to the selection sequence of the signal processing section 2 in the 1 selection sequence block 1, the selection sequence block 7.8 is selected via the output terminal section 3 and the next stage block selection section 4. In these selection sequence blocks 7.8, a selection sequence is executed by external input signals 2A, 2B.

Next-stage control blocks 10.11 and 10.12 are selected and activated.

That is, by turning on the input signals LA and IB, "plant operation starts" and "product type A is selected".

[Step S2. "Select S3", "Process step S2 P1, P
2", "Process step S3 PL.

A series of processing contents "executed by P3" is immediately determined, and type A is manufactured based on this. After that, in order to switch the manufactured item to type B, all you have to do is keep input signal IA on, turn input signal IB off, and turn on input signal IC, which causes selection sequence block 7.9 to be selected. and each step S2. Processing PL, P2 and 1) required for S4, respectively.2. P3 is control block 10.11 and 11.1
2 is executed and manufacturing of type B is started.

Note that in this embodiment, selection sequence blocks 1.7 to
Although Plan 9 is constructed in two dimensions, it is of course possible to change these to three dimensions or more as necessary, such as the scale of Plan 1-.

(Effects of the Invention) As described in detail above, according to the present invention, a pre-stored control program is selected and activated via a multidimensionally configured selection sequence block. The program can be easily changed simply by changing the input signal, and the time required for the change is essentially only the time required to change the input signal.
Instant program changes are possible.

Therefore, there is no need to stop plant operations.

It is possible to dramatically improve operational efficiency.

Furthermore, even if the hierarchical operating procedures of the control program, such as the manufacturing process or specific processing, are changed due to changes in the product type, etc., the control program must be quickly changed to comply with these changes. Can be done.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, with FIG. 1 being a diagram showing the basic configuration of a selection sequence block, and FIG. 2 being a block diagram showing an example of application of the invention. 1.5-9... Selection sequence block 2... Signal processing section 3... Output terminal section 4... Next-stage block selection section 10-12... Control block

Claims (1)

[Claims] A plurality of control blocks in which a control program to be executed is stored is selected via any one of a plurality of selection sequence blocks provided in series, and the control program is configured to be executable. The sequence block includes a signal processing section that performs processing according to a predetermined processing procedure according to an input signal from the outside, and a selection sequence block or control block to be processed next according to the output signal of this signal processing section. A multidimensional program selection method characterized by comprising a next stage block selection section.