Eaton eNMC2, User Manual, Page: 226 / 231

EMP detection fails at discovery stage
Troubleshooting – 226
8.3.3 Action
In the server system BIOS, change the setting for Automatic Power ON to "Enabled".
8.4 EMP detection fails at discovery stage
In the Network Module, in Contextual help>>>Environment>>>Commissioning/Status , EMPs are missing in the Sensor
commissioning table.
8.4.1 Symptom #1
The EMPs green RJ45 LED (FROM DEVICE) is not ON.
8.4.1.1 Possible causes
The EMPs are not powered by the Network module.
8.4.1.2 Action #1-1
Launch again the discovery, if it is still not ok, go to Action #1-2.
8.4.1.3 Action #1-2
1- Check the EMPs connection and cables.
Refer to the sections Servicing the EMP>>>Installing the EMP>>>Cabling the first EMP to the device and Servicing the
EMP>>>Installing the EMP>>>Daisy chaining 3 EMPs.
2- Disconnect and reconnect the USB to RS485 cable.
3- Launch the discovery, if it is still not ok, go to Action #1-3.
8.4.1.4 Action #1-3
1- Reboot the Network module.
2- Launch the discovery.
8.4.2 Symptom #2
The EMPs orange RJ45 LEDs are not blinking.
8.4.2.1 Possible causes
C#1: the EMP address switches are all set to 0.
C#2: the EMPs are daisy chained, the Modbus address is the same on the missing EMPs.
8.4.2.2 Action #2-1
1- Change the address of the EMPs to have different address and avoid all switches to 0.
Refer to the section Servicing the EMP>>>Defining EMPs address and termination>>>Manual addressing.
2- Disconnect and reconnect the USB to RS485 cable. The address change is only taken into account after an EMP power-up.
3- Launch the discovery, if it is still not ok, go to Action #2-2.
8.4.2.3 Action #2-2
1- Reboot the Network module.