Built-in I/O Operation Status Indicators
These indicators show the operation status of the built-in I/O of the CPU Unit.
The following example shows the status of the contact 01. The display of the I/O contact number lights
or does not light.
Indicator Color Status Description
Input indicator Yellow
Lit. The input contact is ON.
Not lit. The input contact is OFF.
Output indica-
tor
Yellow
Lit. The output contact is ON.
Not lit. The output contact is OFF.
3 Configuration Units
3-11
NX-series NX1P2 CPU Unit Hardware User’s Manual (W578)
3-1 CPU Units
3
3-1-3 Operation Status Indicators