Mitsubishi FX3U Series Programming Manual

783
FX3G/FX3U/FX3GC/FX3UC Series
Programming Manual - Basic & Applied Instruction Edition
35 SFC Program and Step Ladder
35.2 Step Ladder
31
FNC276-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>

Mitsubishi FX3U Series Specifications

General

Model	FX3U Series
Program Memory	64k steps
Execution Speed	0.065 μs/basic instruction
Type	PLC (Programmable Logic Controller)
Power Supply	100-240V AC
I/O Points	Up to 384
Communication	USB
Expansion	Supported via expansion modules
High-Speed Counters	Up to 6 channels
Analog Input/Output	Available via expansion modules
Temperature Range	0 to 55°C
Programming Language	Ladder Logic, Structured Text
Built-in Functions	PID control
Humidity	5 to 95% (non-condensing)