Normally Closed Contacts, as well as normally open contacts and analog inputs represent the input terminals of a IDEC SmartRelay module.
A pop-up window opens when you insert the contact in your circuit diagram. In this dialog you can specify the type of input according to your IDEC SmartRelay. The cursor keys are also available as inputs as are the Text Display function keys if you have a Text Display module.You can also select a fixed logical level for the input.
To change an input in your LAD circuit diagram, double-click on the corresponding block to open a pop-up window in which you can make your changes.