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FX3G/FX3U/FX3UC Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
35 SFC Program and Step Ladder
35.2 Step Ladder
31
FNC275-FNC279
Data
Transfer 3
32
FNC280-FNC289
High Speed
Processing 2
33
FNC290-FNC299
Extension File
Register
34
FNC300-FNC305
FX
3U
-CF-ADP
35
SFC•STL
Programming
36
Interrupt
Function
37
Special Device
38
Error Code
A
Version Up
Information
B
Execution Times
35.2.6 Program with state relays in branches and recombination
1. Example of selective branch
Do not use MPS, MRD, MPP, ANB and ORB instructions in a transfer processing program with branches and
recombination.
Even in a load driving circuit, MPS instructions cannot be used immediately after STL instructions.
In the same way as programs for general state relays, program the drive processing first, and then program the
transfer processing.
Continuously program all transfer processing.
STL
OUT
LD
SET
LD
SET
LD
SET
21
20
1
X001
X000
Y000
STL S20
SET S21
S20
Y000
X000
S21
X001
S31
X002
S41
Y000
TRAN
31
2
TRAN
41
3
TRAN
SET S31
X002
SET S41
Drive
processing
Transfer
processing
X000 X001 X002
<Step ladder> <List program>
<SFC program>