Mitsubishi Q Series

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4 SFC PROGRAM CONFIGURATION
MELSEC-Q
(3) Operation at double START
(a) When transition destination is serial transition
1) When setting is "STOP"
........If the transition destination is active, an error occurs and the processing of the CPU
module stops.
Transition destination
2) When setting is "WAIT"
........Execution waits until the transition destination step becomes inactive.
When the transition destination step becomes inactive, a transition is executed and
the transition destination step becomes active.
In a WAIT status, the previous step is deactivated.
WAIT status
Active
Transition
condition
satisfied
Transition
condition
satisfied
Inactive (WAIT)
Transition
executed
InactiveInactive (WAIT)
Active
Transition
3) When setting is "TRANSFER"
........A transition is executed and the previous step becomes inactive.
Transition
condition
satisfied