The following table explains what indicator LED displayed on the back of the Profibus card represents.
|OFF||RED||Node is not connected.
Another unused node has a terminator resistor that is being used.
|RED||RED||Wires are crossed on the network.|
|RED||Blinking GM/Red||Terminating Resistor not set on I/O side.|
|GREEN||RED||Terminating resistor on PowerStation side needs to be turned on.|