Reset Step - Mitsubishi Electric MELSEC-Q Series Programming Manual

Reset step

A reset step is a step which designates a forced deactivation of another specified step (operation output). The reset step
deactivates the designated step in the current block before execution of the operation output every scan. Except the
deactivation of the specified step, the reset step execute the operation output with the same functions as a normal step
(without step attributes).
When deactivating only the designated step
Set the step number to be deactivated to the specified step number Sn.
When deactivating all the held steps
Set "999" to the specified step number Sn. When the number of the specified step is "999", the following are batch-
deactivated.
• Coil HOLD steps in the current block
• Operation HOLD steps (without transition check)
• Operation HOLD step (with transition check)
• Only held steps can be deactivated by the reset step. HOLD steps that are active but not held and steps that
are not specified as the HOLD steps are not the targets of the reset step.
• For the Basic model QCPU, Universal model QCPU, and LCPU, a step of the CPU itself cannot be specified
as a reset step.
4 SFC PROGRAM CONFIGURATION
4.2 Steps
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