Rockwell Automation 1734-XXXX POINT I/O Digital and Analog Modules and POINTBlock I/O Modules - Manual (Page 147)

Rockwell Automation Publication 1734-UM001E-EN-P - July 2013
Troubleshoot with the Indicators 149
Troubleshoot I/O
Communication Modules The status indicators on the communication modules provide system power and
DeviceNet power indications.
1734-PDN DeviceNet Communication Interface Module
System Power
DeviceNet Power
Indicator Indication Probable Cause Recommended Action
System Power Off • Device is not active.
• DeviceNet power is off, or DC-
DC converter problem is
present.
1. Verify DeviceNet power is on, and apply power if needed.
2. Verify backplane power not exceeded, and correct, as needed.
3. Replace 1734-PDN module.
Green • System power is on.
• DC-DC converter is active (5V).
None.
DeviceNet Power Off • Device is not active.
• DeviceNet power is off.
Apply DeviceNet 24V power.
Green Power is on with 24V present. None.