FBD Variables

All variable symbols and constant expressions are entered in FBD diagrams using small boxes.

1. Click this button in the FBD toolbar to insert a variable tag:

   In this mode, the mouse is used for inserting variable tags. Click in the diagram and drag the new variable to the desired position.

2. Double-click a variable tag to open the variable selection box.
   See Select FBD Variables and Instances.
3. Either select the symbol of a variable or enter a constant expression.
   Variables tags must be linked to other objects (e.g., block inputs and outputs) using connection lines.
4. Resize a variable box vertically to display, together with the variable name, its tag (short comment text), and its description text.
   The variable name always appears at the bottom of the rectangle:

Description Tag Name

See Variables tab.