Mitsubishi Electric FX3G SERIES Programming Manual page 761

Programmable controllers

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Table of Contents

Series Programmable Controllers

Programming Manual - Basic & Applied Instruction Edition

4. Inputting and indicating a program using GX Developer

• Input a circuit for setting the initial state relay to ON using the relay ladder.

In this example, the initial state relay S0 is set to ON in a ladder block using the special auxiliary relay M8002 which

turns ON momentarily when the PLC mode is changed from STOP to RUN.

• When inputting a program using GX Developer, write a relay ladder program to a ladder block, and write an SFC

program to an SFC block.

• Programs expressing operations in state relays and transfer conditions are handled as internal circuits of the state

relays and transfer conditions.

Create each one using a relay ladder.

For details on the programming procedure in GX Developer, refer to GX Developer Operating Manual.

Write a circuit not

belonging to SFC to a

ladder block using a

relay ladder.

Write an SFC program

to an SFC block.

Ladder block

35 SFC Program and Step Ladder

Program for setting the initial state

Indicate the state relay number and

transfer condition number.

When a program is input using GX Developer,

"RET" and "END" are automatically written.

35.1 SFC Program

Input them as

internal circuits.

Fx3u series Fx3uc series