JPH0414109A - Brand control sequence controller - Google Patents

Abstract

PURPOSE:To easily change a brand with no change of a sequence program by changing an executing sequence after changing the description contents of an executing sequence table when the execution sequence is changed for each sequence. CONSTITUTION:The sequence unit executing parts parts 4a, 4b... execute the sequence units A, B... respectively. Then seven steps are prepared in a step column of an executing sequence table 2, and the executing sequence of each step is described by an operator via an input/output device 5. When a request is received for change of a manufacturing brand and a brand X2 is produced, both units B and D are carried out in parallel with each other after the start. The unit C is carried out after the unit B. Then both units E and F are carried out in parallel with each other after the unit D. Thus the brand X2 is manufactured. Therefore the brand can be changed when the executing description columns and the executing contents are rewritten in the seven steps of the table 2 via the device 5.

Description

Detailed Description of the Invention [Purpose of the Invention (Industrial Application Field) The present invention provides a brand suitable for controlling blending equipment, etc. that produces a wide variety of brands by frequently changing the execution order of unit sequences. The present invention relates to a management sequence control device.

(Prior Art) Plant facilities for paper pulp, petrochemical, or food manufacturing often produce a wide variety of brands in response to market needs.

In the production of such a wide variety of brands, brands are often changed not only by changing the amount of raw materials input, but also by changing the order in which raw materials are input.

(Problem to be solved by the invention) However, in the conventional brand management sequence device, when a brand change occurs, set values such as input amount of raw materials and aging time are changed according to the brand. Although this method is easy to use, changing the order in which the raw materials are added requires changing the sequence program itself of the device, which is problematic in that it requires a great deal of labor and time.

In view of the above circumstances, it is an object of the present invention to provide a stock management sequence device that can easily and quickly change the execution order of each sequence without changing the sequence program.

[Configuration of the Invention (Means for Solving the Problems) To achieve the above object, the present invention includes a plurality of sequence unit execution units that execute unit sequences, and startup control of these sequence unit execution units according to the order of execution. It is characterized by comprising a master sequence part and an execution order table that gives the master sequence part an execution order of sequence units, and the execution order table is configured such that the execution order of sequence units can be rewritten at any time by external input operation. shall be.

(Function) According to the above configuration, when there is a brand change that changes the execution order of the sequence unit, the operator can change the execution order by changing the contents of the execution order table, and the sequence program itself can be changed. Brands can be easily changed without making any changes.

(Embodiment) FIG. 1 is a block diagram showing the configuration of an embodiment of a brand management sequence control device according to the present invention.

The sequence control device 1 of this embodiment has a master sequence unit 2 as the control center, an execution order table 3, and execution units 4a, 4b, 4c, 4d, 4e, . . . for each sequence unit.
It is equipped with

The master sequence unit 2 interprets the contents described in the execution order table 3 and executes the sequence unit execution unit 4a in that order.
, 4b, . . .

As shown in FIGS. 3 and 5, the execution order table 3 includes a step column 21, an execution order description column 22, and an execution content (comment) description column 23.

Further, this execution order table 3 can be rewritten by an operator's operation input through the input/output device 5 as necessary.

The sequence unit execution units 4a, 4b, . . . execute a series of sequence control procedures for each sequence unit. Here, in this embodiment, the sequence unit refers to a program unit that is small enough that the processing order within the sequence does not change even if the brand is changed.

Next, the operation of this embodiment will be explained.

Now, assume a plant that manufactures brand XI using the processing procedure shown in FIG. In addition, each sequence unit execution unit 4
a, 4b, . . . , the execution unit 4a executes the sequence unit A, the execution unit 4b executes the sequence unit B, and the execution unit 4
It is assumed that C executes the sequence unit C, and the execution unit 4d executes the sequence unit.

In the sequence shown in FIG. 2, after the start is completed, sequence unit A is executed, and then sequence unit B and sequence unit R are executed in parallel.

Next, after completing the execution of sequence unit B, sequence unit C
, and after each sequence unit is executed, sequence unit E and sequence unit F are executed in parallel.

When sequence unit C, sequence unit E, and sequence unit F are all completed, brand XI is manufactured.

In order to execute such processing, as shown in Fig. 3, prepare seven steps in the step column 21 of the execution order table 2, write the execution order for each step, and write the execution contents of each step. Describe. The description in this execution order table 3 is performed by the operator via the human output device W5.

Let us now consider the case where there is a request to change the brand, and brand X2 is to be manufactured using the processing procedure shown in FIG.

In other words, as shown in Fig. 2, after the start, sequence unit B and unit unit are executed in parallel, and sequence unit B is executed in parallel.
After completion, sequence unit C is executed, and after execution of sequence unit C, sequence unit E and sequence unit F are executed in parallel to manufacture brand X2.

In this case, this can be done by rewriting the execution order description column 22 and execution content column 23 via the input/output device 5 in seven steps as shown in FIG.

[Effects of the Invention] As described above, according to the present invention, it is possible to easily and quickly change the execution order of each sequence unit without changing the sequence program itself.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the brand management sequence control device according to the present invention, FIGS. 2 and 4 are explanatory diagrams showing processing examples executed in the same embodiment, and FIGS. 5
The figure is a configuration diagram showing an example of an execution order table. 1... Sequence control device 2... Execution order table 3... Master sequence units 4a to 4e... Sequence unit execution unit 21... Step column 22... Execution order description column 23... Execution Content description column Agent Patent attorney Noriyuki Chika

Claims (1)

[Claims] A plurality of sequence unit execution units that execute unit sequences, a master sequence unit that starts and controls the sequence unit execution units according to the order of execution, and an execution unit that gives the master sequence unit an execution order of the sequence units. 1. A brand management sequence control device, comprising: a sequence table, wherein the execution sequence table is configured such that the execution order of each sequence can be rewritten at any time by external input operation.