1734-pdn devicenet communication interface module, Troubleshoot i/o communication modules – Rockwell Automation 1734-XXXX POINT I/O Digital and Analog Modules and POINTBlock I/O Modules User 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.
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