Справочник Пользователя для Mitsubishi Electronics Mitsubishi Digital Electronics Welding System FXCPU

1 Outline

FXCPU Structured Programming Manual
(Application Functions)

This manual explains applied functions for structured programs provided by GX Works2.
Refer to a different manual for devices, parameters and sequence instructions.
Refer to the following manual for labels, data types and programming languages for structured programs:

→ Q/FX Structured Programming Manual (Fundamentals)

You can construct two or more programs (program blocks) into one program.
Because you can divide the entire machine processing into small sub processes and create a program for
each sub process, you can efficiently create a program for a large system.

Program structuring is a technique to divide the contents of control executed by the PLC CPU into
hierarchical small units (blocks) of processing, and then construct a program. By using this technique, you
can design a program while recognizing structuring of a sequence program.

Advantages of hierarchical program
• You can examine the outline of a program at first, and then design its details gradually.
• Program blocks located at the lowest level in the hierarchy are extremely simple and highly independent.

Advantages of program consisting of program blocks
• Because the processing of each block is clear, the entire program is easy to understand.
• The entire program can be divided into several blocks that are created by several people.
• The program reusability is improved, and the development efficiency is improved accordingly.

You can save program blocks in a library. Program resources in the library can be shared, and often used
again.