Lenze PLC Designer PLC Designer (R3-1) - Manual (Page 482)

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480 DMS 4.1 EN 03/2011 TD29
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Processing in online mode: When t2 is TRUE, Step2 will be executed immediately after
step11 before t3 is noticed. So both branches will be executed, in contrast to
alternative branches.
Abb. 252 Parallel branch
Alternative branch:
In the following picture see a new alternative branch, created by command 'Insert
branch right' when transition t4 was selected. Automatically a step ("Step32") and a
preceding and a subsequent transition (t41, t42) get inserted.
Processing in online mode: When Step3 is active, the following transitions (t4, t41) will
be checked from left to right. The first branch whose transition is found to be TRUE,
will be executed. Thus only one branch is executed, in contrast to parallel branches.
Abb. 253 Alternative branch