Instruction Manual

Appendix C: Ladder Diagram Block Reference Pointe Controller User Guide

338

C.1 Relays and Coils

C.1.1 Normally Open Contact (XIC)

When used in a Ladder Diagram, this block acts as a relay that controls the

passing of the rung state from the left to the right. The state is passed only if the

value of the associated Bit tag is true or 1.

Select the

tool (from the Relays and Coils toolbar) and click on a ladder rung

to insert the following block:

Once the block is inserted, you can double-click on it to configure it.

Functional Description

When the input state from the left becomes on, the value of the associated Bit

tag is checked. If the tag is true or 1, then the output state to the right is turned

on. If the tag is false or 0, then the output state is kept off.

The relay is checked every time the ladder is scanned, so long as the input state

remains on.

Configuration Reference

Any Bit tag may be associated with the block: %IX, %MX, %QX, or T_DONE.