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5 SFC PROGRAM PROCESSING SEQUENCE
MELSEC-Q
5.3 SFC Program Processing Sequence
5.3.1 SFC program execution
The SFC program is executed once per scan.
(1) Basic model QCPU
The Basic mode QCPU executes a sequence program and then executes a SFC program.
The program execution status is shown below under the following condition.
[Condition]
1) SFC program: Set to Auto START ON
[Program execution]
STOP RUN
Power ON RUN
END
processing
Scan
Program
MAIN
Program
MAIN-SFC
SFC program
execution
Scan
END0Scan
END0
SFC program
execution
Scan
Scan
END
0
SFC program
execution
Scan
Scan
0
Scan time