
3.CREATING AND EDITING SEQUENCE PROGRAMS B-66234EN/05
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End of parallel branch
Two or more flows that branched out gather into one flow.
• How parallel flows gather again is explained below.
• How wait processing occurs is explained below.
If transition P120 is satisfied, the processing
of steps S10 and S20 is terminated, and step
S21 becomes active.
Even if transition P109 is satisfied, transition
does not occur to S20 unless S11 and S16
are active.
If P109 is satisfied when both S11 and S16
are active, the processing of S11 and S16 is
terminated, and step S20 becomes active. In
this case, P109 contains the end conditions
for both S11 and S16.
If you want to set separate end conditions
for steps S11 and S16, specify P111 and
P116 as end conditions, and describe S12
and S17 as dummy steps, as shown on the
left.
Step and subprogram numbers must be
specified for a dummy step, too. In addition,
P110 must be specified as a dumm
transition that is always on.
(Dummy)
(Dummy