Preliminary Knowledge For Creating Step Ladder Programs - Mitsubishi FX3U Series Programming Manual

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Table of Contents

Series Programmable Controllers

Programming Manual - Basic & Applied Instruction Edition

Program with jump/repeated flows

1. Program for the transfer source

Use OUT instruction in the jump/repeated part.

2. Program for the transfer destination

There is no change in programming especially for the transfer destination.

34.2.5 Preliminary knowledge for creating step ladder programs

Refer to the preliminary knowledge for creating SFC programs also.

→ For the preliminary knowledge for creating SFC programs, refer to Subsection 34.1.7.

List of sequence instructions available between STL instruction and RET instruction

Initial/general state relay

recombination

• STL instruction cannot be used in interrupt programs and subroutine programs.

• It is not prohibited to use jump instructions in state relays. But it is not recommended to use jump

instructions because complicated movements will be resulted.

MPS instruction cannot be used immediately after an STL instruction, even in a drive processing

Jump/repeated part

Drive processing

Transfer processing

Use OUT instruction in the jump/

repeated part.

LD/LDI/LDP/LDF,

AND/ANI/ANDP/ANDF,

ANB/ORB/MPS/MRD/

OR/ORI/ORP/ORF,

INV,OUT,SET/RST,

34 SFC Program and Step Ladder

34.2 Step Ladder

Not available

Not available

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