Mitsubishi Electric FX3G SERIES Programming Manual page 239

Programmable controllers

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Table of Contents

Series Programmable Controllers

Programming Manual - Basic & Applied Instruction Edition

2. In the case of CALL instruction

1. When FEND instruction is programmed two or more times

Put a subroutine program or interrupt routine program between last FEND instruction and END instruction.

2. When CALL or CALLP instruction is used

Put a label after FEND instruction. And the SRET instruction is required in every case.

3. When CALL or CALLP instruction is used

If FEND instruction is executed after CALL or CALLP instruction was executed and before SRET instruction is

executed, an error is caused.

4. When FOR instruction is used

If FEND instruction is executed after FOR instruction was executed and before NEXT instruction is executed, an error

5. When the interrupt function (I) is used

Make sure to program an interrupt label (pointer) after FEND instruction. And IRET instruction is required in every

Main routine

Main routine

Interrupt routine

8 Program Flow – FNC 00 to FNC 09

8.7 FNC 06 – Main Routine Program End

Fx3u series Fx3uc series