Interface input OC / SC
Interface input open or short circuit
An input line on an interface device has an open-circuit or short-circuit fault.
What this code means
An input line on an interface device has an open-circuit or short-circuit fault.
Possible causes
- Open circuit in interface input wiring
- Short circuit in interface input wiring
- Missing or incorrect end-of-line device
Common symptoms
- Interface input OC / SC message
- General fault indication
Checks to make
- Identify the affected interface
- Locate and repair the field wiring fault
- Confirm the required end-of-line device is connected
Safety
- Interface inputs may control or monitor other safety systems. Investigate using competent personnel and site-specific cause-and-effect information.
Model notes
The panel message identifies an open or short circuit on an interface input.