LD Elements

When editing a Ladder Diagram (LD) program organization unit (POU), place elements in a language container by dragging them from the LD toolbox or from a contextual menu accessed by right-clicking. An element is inserted at the current position in the diagram. When inserting subsequent elements, these are placed to the right of the selected element on the rung, then onto the next rung. For LD POUs, elements available are:

While dragging rungs and elements from either the toolbox or within a diagram, the language editor displays the possible drop points. Drop points are displayed as plus signs in a black circle. For rungs, the possible drop points are displayed between the rung handles on the left. For elements, the possible drop points are displayed on the rung.

For variables connected to block, coil, and contact elements, add these to existing variables groups from the language container by right-clicking the variable, pointing to

Add to Variable Group

, then clicking the required group.

Drop points between rung handles while dragging a rung in a diagram

Drop points on a rung while dragging elements over the rung