239
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
Int
roduct
ion
2
O
ver
view
3
In
str
uc
tion
Li
st
4
D
evices
in D
etail
5
Spec
ified t
he
D
evice &
C
onst
ant
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Bef
ore
Pr
ogr
am
m
ing
7
B
asic
In
st
ru
ct
io
n
8
FN
C
00-FN
C
09
P
rogr
am
F
low
9
FN
C
10
-FN
C
19
Mo
ve
&
Co
mp
are
10
FNC2
0-F
NC2
9
Ar
ith.
&
Logic
O
per
ation
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