Rungs

Rungs are graphic components of Function Block Diagram (FBD) programs and represent a group of circuit elements leading to the activation of a coil. Dragging the rung element into the workspace inserts a left power rail linked to a right power rail. Also, the rung contains a direct contact and a direct coil. Error symbols () indicate that the direct contact and direct coil are undefined.

To insert an FBD rung