JPH02129704A - Programmable logic controller development tool - Google Patents

Abstract

PURPOSE:To eliminate the need of generating an execution module at every machine kind and to contrive the simplification of the integration and the management of a development software by providing a parameter conversion table and a parameter converting means. CONSTITUTION:In the PLC development tool, a parameter use file 1 is prepared, and a means 5 for converting the data of the parameter use file 1 to actual parameter data is provided. Accordingly, the parameter converting means 5 selects the parameter use file 1 in accordance with a machine kind, and can apply arbitrarily data of a parameter store area 10. In such a way, it becomes possible to have plural pieces of fixed data, and it is possible to cope with every machine kind by a single execution module.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a programmable logic controller (hereinafter referred to as PLO) development tool that can convert data stored in a file into parameter data.

[Conventional technology]

Previously, when attempting to perform operations such as ladder editing, 9
Since each model had different data, it was necessary to set the data for each model of ladder editing from the parameter setting screen, or to use the ladder editing function itself for each model.

FIG. 5 is a configuration diagram showing, in one example, that fixed data (111) is transferred to the parameter storage area member.
5) is a means for transferring fixed data to the parameter storage area, (7) is a ladder editing means that uses parameters in the parameter storage area, and (8) is a means for displaying data requested to be displayed on the CRT+91 by the ladder editing means. be.

Next, the operation will be explained. In FIG.

Read one parameter from the fixed data area (
Step 1). It is determined whether this data is an end code (step 2). When the end code is important, store 7”-Y in the corresponding parameter area (
Step 3). Steps 1 to 3 are repeated until the end coat in the fixed data is read. When the data is an end code, the ladder editing processing means of step 5 is executed. This is an example of means for processing by referring to data set in the parameter storage area.

Also, if there is a request from the ladder editor, the 0 display processing means will display C.
Display on RT (step 5).

[Problem to be solved by the invention]

Conventional PLC development tools are configured in more than one way, so they can only have one fixed data, which causes problems such as the need to have multiple execution modules to support each model. There was a point.

This invention was made to solve the above-mentioned problems, and aims to provide a PLC development tool that can handle each model with one execution module.

[Means to solve the problem]

The PLO development tool according to the present invention is provided with means for preparing a parameter area file and converting data in a parameter file into actual parameter data.

[Effect]

The parameter converting means in this invention can arbitrarily change the data in the parameter storage area by selecting a parameter file depending on the model.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. 1st
In the figure, (1) is a parameter file. This file exists for each model. (2) is a conversion table for converting a parameter file into actual parameter data. (3) is means for selecting which parameter file to select. (4) is means for reading data from the parameter file. (
5) is means for converting into parameter data using the data read in (4) and a parameter conversion table. (5) is means for storing parameter data in the parameter area. (7) to (IG) are the same as the conventional configuration diagram.

FIG. 2 is an example of a parameter conversion table.

Qfl is a pointer that stores a parameter name, and the parameter name is at the destination of the pointer. α2 is set to the type of parameter, and 03 is set to the parameter number.

FIG. 3 is an example of data of a parameter file. U
is the parameter name. a! 9 is a code that separates the parameter name and data. 0G is parameter data. +171 is a line feed code.

Next, the operation will be explained using FIG. 4.

The file name selected by the file specifying means is read (step 1), and then the data of the specified file is read (step 2). (1) reads data for parameters (step 3).

This is the data from I to αη in FIG.

Check whether this data is an end code (step 4). If it is not an end code, convert it to parameter data. A matching parameter is searched for by comparing the parameter name of αQ and the character string of the parameter at the destination of the character string pointer of the parameter θD (step 5). The searched parameter type and number are read and set in the designated parameter storage area (step 6).

Repeat steps 3 to 6 until the end code is reached.

Ladder editing processing is performed with reference to the data stored in the parameter area (step 7). Finally, if there is a display request, it is displayed on the CRT (step 8).

In FIG. 1, the ladder editing means 1 indication processing means is used, and this is shown as a means for using data in the parameter storage area, but if it is a means for using parameter data, Other means may also be used.

[Effects of the Invention] As described above, according to the present invention, since a parameter conversion table and a parameter conversion means are provided, there is no need to create an execution module for each model, and the integration and management of developed software can be simplified. can get.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of this invention, FIG. 2 is a data structure diagram of a parameter conversion table of this invention, and FIG.
FIG. 3 is a diagram showing the structure of data in a parameter file according to the present invention. FIG. 4 is a flowchart of the present invention, FIG. 5 is a conventional configuration diagram, and FIG. 6 is a flowchart of conventional functions. In the figure, (1) is a parameter file, (2) is a parameter conversion table, (31Vi parameter file specification means, (4) is a file reading means, (5) is a parameter conversion means, and (6) is a parameter setting means. , (7
) is a ladder editing means, f81Fi display processing means, (9
) is CRT. En is a character string pointer of a parameter, α2 is a parameter type, α3 is a parameter number, α41Vi is a parameter name, α9 is a space code, αe is data, and αη is a line feed code. Note that the reference numerals in the middle of Figure 6 indicate the same or equivalent parts.

Claims (1)

[Claims] means for specifying a file name; means for reading data with the specified file name; means for converting the file data into specified parameter data according to the contents of a built-in parameter conversion table; A programmable logic controller development tool characterized by having means for setting parameters in a parameter storage area.