FBD OR Vertical Rail

The FBD Editor enables the drawing of FFLD rungs.

• The OR rail can be inserted on a rung in order to connect parallel contacts together.
• In the FBD toolbar , click the Insert OR Rail button () to insert a new OR rail.
  • In this mode, the mouse is used to insert a rail that collects several Boolean data flows for an OR operation to insert parallel contacts (e.g., Ladder Diagrams).
• The OR rail has exactly the same meaning as an OR block regarding the execution of the diagram.