Mitsubishi Electric MELSEC FX3U - Page 815

813
FX3G/FX3U/FX3UC Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
35 SFC Program and Step Ladder
35.1 SFC Program
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
Programming complicated transfer conditions
In a transfer condition circuit, ANB, ORB, MPS, MRD and MPP instructions are not available.
Program the circuit as shown below:
Processing of state relay whose transfer condition is already satisfied
In some cases, it is necessary to execute the next transfer after the limit switch X030 (working as the transfer
condition) in the ON status is set to OFF once, and then set to ON again.
In such a case, make the transfer condition into pulses as shown below so that transfer is not executed by
M100 when S30 turns ON for the first time.
Change
31
3
30
Y000
1
2
X004
X000 X001
TRAN
X002 X003
31
3
30
1
2
M0
X000 X001
TRAN
X002 X003
X004
Y000
M0
M
Limit switch
X030
Motor
Forward
rotation Y030
31
30
2
M100
PLS
X030
Y030
M100
PLS M101
M101
TRAN