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4 SFC PROGRAM CONFIGURATION
MELSEC-Q
(3) In a selection transition, a coupling can be omitted by a jump transition or end transition.
Step
“n+4”
Transition
condition “c”
Transition
condition “b”
Step
“n+1”
Step
“n+2”
Step
“n+3”
Transition
condition “d”
n
Step
“n+5”
Step n
When transition condition “b” is satisfied at the
step “n” operation output, processing will
proceed in order through steps “n+1”, “n+2”
and “n+3”. When transition condition “d” is
satisfied, processing will jump to step “n”. (For
details on “jump transitions”, see Section
4.3.4.)
POINTS
In a selective transition, the number of branches and the number of couplings may be different.
However, a selection branch and parallel coupling or a parallel branch and selection coupling
cannot be combined.
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