Mitsubishi Electronics FX3G Manuel D’Utilisation

FX

3S

/FX

3G

/FX

3GC

/FX

3U

/FX

3UC

 Series

Programming Manual - Basic & Applied Instruction Edition

8 Program Flow – FNC 00 to FNC 09

This instruction calls and executes a program which should be processed commonly in a sequence program.
This instruction reduces the number of program steps, and achieves efficient program design.
For creating a subroutine program, FEND (FNC 06) and SRET (FNC 02) instructions are required.

P63 is dedicated to CJ (FNC 00) instruction (for jump to END step), it cannot be used as a pointer for CALL (FNC 01)
instruction.

While the command input is ON, CALL instruction is executed and the program execution jumps to a step with a label

.

Then, a subroutine program with the label 

 is executed.

When SRET (FNC 02) instruction is executed, the program execution returns to the step after CALL instruction.
• At the end of the main program, put FEND instruction.
• Put a label (P) for CALL instruction after FEND instruction.

Pointer number (P) indicating the label number for the jump destination
(FX

3S

: P0 to P62 and P64 to P255, FX

3G

/FX

3GC

: P0 to P62 and P64 to P2047, 

FX

3U

/FX

3UC

: P0 to P62 and P64 to P4095)

Pointer number

System User

Digit Specification

System User

Special 

Unit

Index

Con-
stant

Real 

Number

Charac-

ter String

Pointer

X Y M T C S D .b KnX KnY KnM KnS T C D R U \G

V Z Modify K H

E

" "

P

−
−

P

FNC 01

CALL

CALL

CALLP

Continuous

Operation
Pulse (Single)

Operation

Mnemonic

Operation Condition

16-bit Instruction

3 steps

32-bit Instruction

Mnemonic

Operation Condition

  

Pn

  

Pn

  

Pn

  

Pn

M8000

FNC 01

CALL

Pn

FNC 06

FEND

RUN monitor

(normally ON)

FNC 02

SRET

Command

User program

User program

Main program
Program area from the step 0 to FEND
instruction

Subroutine program
Program area from a label           to SRET
instruction

User program

Label

Pn 

Pn 

Pn