JP2943260B2 - Sequencer / loader circuit input method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION A. Industrial Field of the Invention The present invention relates to a visual controller of a device for inputting a sequence control circuit to a programmable controller (hereinafter referred to as a sequencer) for performing sequence control using a microcomputer. The present invention relates to a circuit input method of a loader, and more particularly, to a circuit input method of a standard circuit loader.

B. Summary of the Invention The present invention relates to a circuit input method for a loader that inputs a sequence control circuit to a sequencer. Creates an input table corresponding to the format, registers the standard circuit to register them, reads the input table, applies element numbers and contact types to the substitute numbers, calculates Boolean equations, and develops a sequence control circuit By providing an application circuit creation process, it is possible to provide a technology for reducing the number of key inputs and greatly reducing the input time.

C. Prior Art A visual loader is often used to input a sequence control circuit to a sequencer, and the input is performed by a symbol key arranged on the front of the loader.

FIG. 8 is a partial circuit diagram showing an example of the sequence control circuit. In the figure, symbols 1, 2, 4, and 6 indicate A contacts, symbols 3 and 5 indicate B contacts, and symbol 7 indicates an output. Indicates an instruction, a numeric part, or a relay number. To input such a circuit, 22 key operations are normally performed as shown in FIG. 8 (b).

However, in the figure Is a branch symbol.

D. Problems to be Solved by the Invention If the key operation as described above is repeated each time a circuit is input, it takes too much time and effort. Therefore, in order to simplify the input, a loader to which a function of the standard circuit system is added has been devised. According to this method, when a similar circuit pattern is used repeatedly, the circuit is registered in advance as a standard circuit, called up whenever necessary, and the relay number is changed. For example, if the circuit shown in FIG. 8A is registered as a standard circuit, it is very convenient to change the relay number for the circuit pattern shown in FIG. 9 only.

However, there is a drawback that such a standard circuit method cannot cope with a slight change in the circuit pattern.
For example, the circuits shown in FIGS. 10 and 11 must be input one by one using the conventional key operation, or the standard circuit must be expanded and then changed, requiring a lot of time and effort. I was

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a circuit input method of a sequencer / loader that reduces the number of key input circuits for a sequence control circuit and greatly reduces input time. And

E. Means for Solving the Problems In order to solve the above problems in the present invention, in a circuit input method of a visual loader that inputs each sequence control circuit to a sequencer, a standard circuit of an alternate format is input as a pattern. Then, the pattern is converted into a hierarchical level by a Boolean equation, an input table corresponding to an alternate form is created, a standard circuit registration step of registering them, and the input table is read, and the element number and the contact form are read in the alternate number. , A Boolean equation is calculated, and an application circuit creation step of developing a sequence control circuit is performed by a circuit input method of a sequencer / loader.

F. Action The present invention addresses the problem by roughly two technical improvements.

One is to input a standard circuit in the form of a substitute number and set an input table corresponding to the substitute number, thereby coping with a case where the relay and the element number are different.

The other is to convert the pattern of the standard circuit into a hierarchical level by using a Boolean expression and input it, thereby coping with a case where the pattern is different.

FIG. 1 and FIG. 2 are process diagrams showing the basic principle also serving as an embodiment of the present invention. FIG. 1 shows a registration process of a standard circuit, and FIG. 2 shows a process based on the registered standard circuit. 4 shows a process of creating an application circuit. In FIG. 1, the standard circuit registration step is a step of inputting a standard circuit in an alternate form as a pattern, a step of converting the pattern into a hierarchical level by a Boolean equation, and creating an input table corresponding to the alternate system. In FIG. 2, the application circuit creation step includes a step of reading an input table, a step of assigning an element number to a substitute number of the input table, and a Boolean algebraic expression. It is composed of a step and a step of developing a sequence control circuit by calculation.

That is, if the standard circuit registered in the process shown in FIG. 1 is used, a desired application sequence control circuit can be developed in the process shown in FIG.

G. Examples Hereinafter, examples of the present invention will be described in detail with reference to the drawings.

FIG. 1 and FIG. 2 are process diagrams showing an embodiment, which also serves as a basic principle diagram of the present invention. FIG. 1 is a process diagram for registering a standard circuit, and FIG. 2 is a process diagram for creating an application circuit if an application circuit is created based on the registered standard circuit.

In the standard circuit registration process, for example, when one circuit is received as shown in FIG. 8, first, as shown in FIG. 3, the element and relay numbers are replaced with alternate numbers Y1 to Y7 and then input as patterns. I do. Next, the input standard circuit is expressed by Boolean algebra. The circuit shown in FIG. 3 is expressed by the following algebraic expressions.

(Y1 + Y2) * (Y3 + Y4 * Y5 + Y6) * Y7 This algebraic expression is shown at the hierarchical level as shown in FIG. Since this hierarchy level is represented in an alternate form,
An input table corresponding to the substitute number is created as shown in FIG.
It is registered (stored) with the hierarchy level. At this point, the input table is only the first row, and the lower row is blank.

In the application circuit creation process, one circuit is received, and if there is a circuit pattern similar to the registered circuit pattern, the input table is read and the element number is assigned to the substitute number of the input table. At this time, the unused portion is left blank without being input, and the B contact portion is added with B to the number. Ninth
The circuit shown in the figure is as shown in column (a) of the input table shown in FIG. 5, the circuit shown in FIG. 10 is shown as column (b) in the input table, and the circuit shown in FIG. Is as shown in column (c) of the input table. Next, the Boolean expression is calculated to reproduce the stacking level. At this time, the operator is also omitted when the number of layers below the operator is one or less. As a result, for example, in the case of the input table (b), 100 * (300 + 400B * 500 + 6
00) * 700, which is a hierarchical level as shown in FIG. When this is expanded to an application circuit, the circuit shown in FIG. 10 is obtained, and it can be seen that the sequence control circuit is correctly input. In the case of column (c) in the input table, (300 + 400 * 60
0) * 700, which is a hierarchical level as shown in FIG. If this is expanded to an application circuit, the circuit shown in FIG. 11 is obtained, and it can be seen that the sequence control circuit is also correctly input.

As described above, in this embodiment, it is possible to make the standard circuit correspond to most of the sequence control circuits by a simple key operation.

H. Effects of the Invention As described above, according to the present invention, it is possible to provide a circuit input method of a sequencer / loader in which the number of key input circuits is reduced and input time is significantly reduced.

[Brief description of the drawings]

1 and 2 are process diagrams of the basic principle of the present invention, and FIG.
FIG. 4 is an explanatory view of a substitute circuit of the present invention, FIG. 4 is an explanatory view of a hierarchical level of the present invention, FIG. 5 is a sample diagram of an input table of the present invention, FIG. 6 and FIG. FIG. 8 is an explanatory diagram of a conventional example, and FIGS. 9 to 11 are circuit diagrams of input data.

Claims (1)

(57) [Claims] In a circuit input method of a visual loader for inputting each sequence control circuit to a sequencer, a standard circuit in an algebraic form is inputted as a pattern, and the pattern is converted into a hierarchical level by a Boolean algebraic expression. A standard circuit registration step of creating an input table corresponding to the above, and registering these various standard circuits as substitutes corresponding to the type, reading out the input table, and applying element numbers and contact types corresponding to the substitutes. A circuit input method for a sequencer / loader, characterized by comprising an application circuit creation step of calculating a Boolean equation and developing a sequence control circuit.