231
FX
3G
/FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
8 Program Flow – FNC 00 to FNC 09
8.3 FNC 02 – SRET / Subroutine Return
1
Introdu
ction
2
Ov
ervi
ew
3
Instruction
Li
st
4
D
evices
in Det
ail
5
Specifi
ed the
De
vice
&
C
onst
ant
6
Bef
ore
Pr
og
ra
mmi
ng
7
Bas
ic
Instruction
8
FN
C00-FN
C0
9
Program Fl
ow
9
FNC
10-FN
C19
Mov
e & Com
pare
10
FNC
20-FNC
29
Arith. & Lo
gi
c
Operati
on
8.3
FNC 02 – SRET / Subroutine Return
Outline
This instruction returns the program execution from a subroutine to the main program.
1. Instruction format
2. Set data
3. Applicable devices
Explanation of function and operation
When CALL instruction in the main program is executed, the program execution jumps to a subroutine.
SRET instruction returns the program execution to the main routine.
→
Refer to Section 8.2.
Operand type
Description
Data type
–
There is no set data.
–
Oper-
and
Type
Bit Devices
Word Devices
Others
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
–
There are no applicable devices.
FNC 02
SRET
Independent Inst.
1 step SRET
This instruction is the independent type, and
does not require drive contact.
Mnemonic
Operation Condition
Continuous
Operation
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