4 - 30 4 - 30
4 SFC PROGRAM CONFIGURATION
MELSEC-Q
(4) Couplings must be provided when the parallel transition format is used. Program creation is
impossible without couplings.
Example: Program without couplings (Cannot be designated)
END step
END step
Each column ends
at the END step.
Jump transition (see Section 4.3.4)
occurs without coupling
Jump
(5) As a rule, a waiting step must be created prior to the coupling.
However, in cases such as the example below where each of the parallel transition columns
consist of only 1 step (program without a transition condition between the parallel transition
branch and the coupling), a waiting step is not required.
To Next Page
Loading...
