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FX3G/FX3U/FX3UC Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
35 SFC Program and Step Ladder
35.1 SFC Program
Separation of flow
When creating an SFC program having two or more initial state relays, separate the blocks for each initial state relay.
The ON status can be transferred among SFC programs created by block separation (jump to a different flow).
A state relay in a program created in a different block can be used as a contact for the internal circuit or transfer condition of
another state relay.
1. Separation of flow
2. Jump to another flow
3. Using a state relay in a program created in a different block
20
21
3
3
22
SFC block 1
40
41
4
4
42
SFC block 3
20
21
3
3
22
SFC block 1
40
41
4
4
42
SFC block 3
41
20
21
3
3
22
SFC block 1
S40
0
1
2
3
S41
40
41
4
4
42
SFC block 3
S20
TRAN
S21
Y010
0
1
2
3
TRAN
Y000