Form C Relay Outputs - MC PCI-PDISO16 User Manual

PCI-PDISO16 User's Guide

Form C relay outputs

The Form C relay has a Common (C), Normally Open (NO) and Normally Closed (NC) contact; see Figure 8.

When a 0 is written to the output, the relay is not energized, and the common and NC are in contact.

When a 1 is written to the output, the relay is energized and the common and NO are in contact.
Figure 8. Form C relay contacts
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Functional Description