Mitsubishi FX3U Series Programming Manual

764
FX3G/FX3U/FX3GC/FX3UC Series
Programming Manual - Basic & Applied Instruction Edition
35 SFC Program and Step Ladder
35.1 SFC Program
Composition of branches/recombination and dummy state
1. When a recombination line is directly connected to a branch line without a state relay
When a recombination line is directly connected to a branch line without a state relay as shown below, it is necessary
to provide a dummy state relay between the lines.
There are no dedicated numbers for dummy state relays.
Use a state relay number not used in a program as a dummy state relay.
Dummy state
relay
20 30 40
50 60
20 30 40
50 60
20 30
40 50
20 30
40 50
20 30 40
50 60
20 30 40
50 60
20 30
40 50
20 30
40 50
Deform it
as follows.
100
Dummy state
relay
101 102 103
Dummy state
relay
Dummy
state
relay

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)