JPH02129703A - Programmable logic controller development tool - Google Patents

Abstract

PURPOSE:To easily execute editing when it is desired again to edit a link file which is generated once by adding a division processing means. CONSTITUTION:The PLC development tool is provided with a link file input means 17 for reading a link file 11, and a division processing means 20 for dividing the link file 11 into a ladder file 2 and message files 3 - 10. In such a way, the link file 11 which is generated once is divided into the original ladder file 2 and the message files 3 - 10. Therefore, editing by the ladder file 2 and the message files 3 - 10 can be executed again, and that which is edited by the link file 11 is reflected in the original ladder file and the message files 3 - 10, as well.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is directed to dividing a file created by linking a ladder file and a message file (hereinafter referred to as a link file) back into the original ladder file and message file. The present invention relates to a programmable logic controller (hereinafter referred to as PLC) development tool.

[Conventional technology]

The conventional method is to create a sequence program and message data in a PLO development tool.

A ladder file is a file containing a sequence program, and a message file is a file containing message data. Numerical control device (hereinafter referred to as No device)
In this case, a file linking the two is used to operate the sequence program and display the message data on the CRT of the NO device.

The function of linking this ladder file and message file will be explained using FIG. (2) is a ladder file containing a sequence program.

(3) Members are message files, anh link files, and this file has a configuration in which files 21 to QG are linked and a header 1 is added, as shown in Figure 2. This is the direction of the dashed arrow.a
3 is a key input processing means, a3 is a screen display means, (14
) is a ladder editing processing means, αri is a message editing processing means, ko is a link processing means, aη is a link file input/output means, an αzenhara ladder file input/output means, and a3 is a message input/output means.

Next, I wonder about the operation. In FIG.

Key inputs from the operation board are sent to the ladder editing processing means QJ via the key input processing means. A sequence program is created by this ladder editing processing means and displayed on the C1RT via the one-screen display processing means 0. Finally, it is stored in a ladder file via the ladder output means. The message file is also key input processing means α2
Message editing processing means a! Message data is created in step 9. This data is displayed as message data on the CRT via a 0 display processing means. The created message data is stored in message files (3) to 6m via message output means 0.

To create a link file, read the ladder file in FIG. 6 (step 1).

Next, the size of the ladder file and the start address of the ladder file are written into the management table (step 2). Next, the presence or absence of the message file is checked (step 3).

This is because eight message files can be specified on the screen shown in FIG. 1, and the presence or absence of the files can be checked. If the file exists, read it (step 4). Write the size and start address of the message file to the management table (step 5).

Step 4 and step 5 as long as the file name is specified
Repeat. When the management table is completed, click + in Figure 2.
Write data sequentially from the management table as shown in If) (
Step 6). Finally, perform screen display processing (step T
).

[Problem to be solved by the invention]

The conventional PLO link function is a ladder file.

Because a single link file was created by linking message files, there was a problem in that when editing a link file that had been created, the original ladder file or message file had to be changed. ◎ This invention was made in order to solve the above-mentioned problems, and is intended to be reflected in the original ladder file and message file edited with the link file.

[Means to solve problem a]

The PLO development tool according to the present invention is provided with a link file input means for reading a link file, and a division processing means for dividing the link file into a ladder file and a message file. The link file name I in FIG. 2 is divided according to the direction of the solid arrow.

[Effect]

The division processing means in this invention divides the once-created link file into the original ladder file and message file, thereby making it possible to edit the ladder file and message file again.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. 1st
The figure is an example of a screen for dividing a link file. M.I.
eLDA8LNK is the link file name of I in Figure 2, M
KLLADD brother R is the ladder file name of (2), MKL
M88Gi is the message file name in (3). Below, MILMEISG2 to MKLMSSG8 are (4) to
Corresponds to the message file name in Qlli.

FIG. 3 is a block diagram for dividing link files. (2) to αe, all, α9#-i This is the same as the conventional configuration diagram. A link file input means reads the αnK link file I, and - is a division processing means that divides the link file.

Next, the operation will be explained. In FIG. 3 and FIG. 4, the key input processing means (the division processing means (
). The division processing means @ reads a part of the management table of the data of the link file U via the link file input means (Step 1) Next, it reads the size of the ladder in the management table and extracts this size from the link file. Lead by that amount (Step 2). This data is written to the ladder file 2 via the ladder file output means Nishiki (step 3). To divide a message into message files, it is determined whether the message size and address in the management table are 0 or not. If the message size and address are 00, look at the next data (step 5).

When the size is other than 0.

Read the message size from the link file (step 6). Data is written to the message file (3) via the message file output means 0 (step 1). 8 steps from step (5) to step (7)
The circuit is returned (step 4). Finally, by processing the display data, the completion is displayed on the CRT (step 8).

Although the message file data processing is repeated eight times in FIG. 4, the number of processing times is not particularly limited.

〔Effect of the invention〕

As described above, according to the present invention, since the 1-division processing means is added, it is possible to easily edit a 9-link file that has been created once when it is desired to edit it again.

[Brief explanation of the drawing]

Figure 1 is a diagram showing an example of a setting screen for dividing a linked file of this invention, Figure 2 is a diagram showing an example of a file division image of a linked file of this invention, and the third diagram is a diagram of the invention. FIG. FIG. 4 is a flowchart of the present invention, FIG. 5 is a block diagram of a conventional processing means, and FIG. 6 is a conventional flowchart. In the figure, (1) is a management table, (2) is a ladder file, (3) ~ αα are message files, +Il
l is the link file, (I is the key input processing means, (
13 is a screen display means, Q41 is a ladder editing processing means,
αS is a message editing processing means, ko is a link processing means,
an is a link file input/output means, brocade is a ladder file input/output means, and a'J is a message file input/output means. O indicating part

Claims (1)

[Claims] Key input processing means for processing key input from an operation board; means for inputting and outputting sequence programs as files; means for similarly inputting and outputting messages as files; A programmable logic controller development tool that has a means for linking and a means for inputting and outputting linked data as a file.