Mitsubishi Electric MELSEC-Q Series Programming Manual page 130

Operation at double START
■When transition destination is serial transition
• When setting is "STOP": If the transition destination is active, an error occurs and the processing of the CPU module stops.
• 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.
• When setting is "TRANSFER": A transition is executed and the previous step becomes inactive.
4 SFC PROGRAM CONFIGURATION
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4.7 SFC Operation Mode Setting