The FBD editor enables the drawing of LD rungs. A particular object, the "OR" rail can be inserted on a rung in order to connect parallel contacts togetherPress the following button in the FBD toolbar for inserting a new "OR" rail:
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Insert OR
rail: In this mode, the mouse is
used for inserting a rail that collects several Boolean data flows
for an OR operation, in order to insert parallel contacts such as
done in Ladder Diagrams. |
The "OR" rail has exactly the same meaning as an "OR" block regarding the execution of the diagram.