Precautions When Creating Sequence Programs For Operation Outputs (Steps) And Transition Conditions - Mitsubishi MELSEC-Q Series Programming Manual

4 SFC PROGRAM CONFIGURATION
4.3.5 Precautions when creating sequence programs for operation outputs
(steps) and transition conditions
The points to consider when creating operation output (step) and transition condition sequence
programs are described below.
(1) Sequence program for operation outputs (steps)
(a) Step sequence program expression format
A step sequence program using the ladder expression format is shown below.
REMARKS
The lack of a sequence program at a given step will not result in an error. In such cases, no
processing will occur until the transition condition immediately following the step in question is
satisfied.
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Output
instruction
Output
Condition
instruction
Condition can be omitted
only at the first ladder block
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