Symbol: ; keyboard shortcut: [Ctrl]+[R]
Function: This command inserts a contact with lines in parallel with and below the selected element.
Call: Menu bar: “FBD/LD/IL”; context menu.
Requirements: The LD editor is active. A line or a contact or a box is selected.
You can program closed parallel branches in a LD network as short circuit evaluation (SCE) or OR constructs. SCE branches are displayed with double vertical lines, and OR branches with single lines. Refer to the help page for "Closed branches".