Mitsubishi Electric FX3G SERIES Programming Manual page 450

Programmable controllers

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Table of Contents

Series Programmable Controllers

Programming Manual - Basic & Applied Instruction Edition

1. Command input and instruction operation

While the command input is ON:

While the command input is OFF:

2. Relationship with the scan time (operation cycle)

This instruction is executed in synchronization with the scan time.

If the scan time is short, the constant scan mode can be used. If the scan mode is too long, the timer interrupt function

can be used.

3. Output type of the PLC

Use a transistor output type PLC.

4. When "00H (NULL code)" is contained in the data (while M8027 is ON)

The instruction is executed completely, and the data after "00H" is not output.

M8029 remains ON during one operation cycle.

5. Limitation in number of instructions

The PR instruction can only be executed twice in a program.

If it is necessary to use the PR instruction 3 times or more, use the indexing (V, Z) function in programming.

Even if the command input is continuously ON, execution is completed after a

series of outputs.

M8029 turns ON when the command input turns OFF after M8027 turns ON and

execution is completed.

All outputs are OFF.

15 External FX I/O Device – FNC 70 to FNC 79

15.8 FNC 77 – PR / Print (ASCII Code)

Fx3u series Fx3uc series