Allen-Bradley 1734-OB2, User Manual, Page: 148 / 221

Rockwell Automation Publication 1734-UM001E-EN-P - July 2013
150 Troubleshoot with the Indicators
1734-ADN (X) DeviceNet Adapter
Indication Probable Cause Recommended Action
Adapter Status
Off No power applied to device. Apply power to device.
Solid green Device is operating normally. None.
Flashing green Device needs commissioning due to configuration missing,
incomplete, or incorrect. Check configuration and recommission the adapter.
Flashing red Recoverable fault is present. 1. Make sure the adapter does not need a FLASH update.
2. Verify MAC_id switch has not changed since power-up.
Solid red Unrecoverable fault may require device replacement. Replace the adapter.
Flashing red/green Device is in self-test. Wait for the self-test to finish.
System Power
Field Power
Adapter Status
DeviceNet Status
POINTBus Status
Adapter
Status
DeviceNet
Status
PointBus
Status
1734-ADN
Field
Power
System
Power
1734-ADN DeviceNet Adapter
System Power
Field Power
Adapter Status
DeviceNet Status
Subnet Status
(includes POINTBus
status)
1734adnx
Adapter
Status
DeviceNet
Status
Subnet
Status
1734-ADNX
Field
Power
System
Power
1734-ADNX DeviceNet Adapter
Indication Probable Cause Recommended Action
DeviceNet Status
Off Device is not online.
• Device has not completed Dup_MAC_ID test.
• Device is not powered - check module status indicator.
Apply power to device, wait for no duplicate MAC_id
to complete, and correct, as needed.
Flashing green Device is online, but has no connections in the established state. None - device is in Idle or Program mode.
Solid green Device is online and has connections in the established state. None.
Flashing red One or more I/O connections are in timed-out state Check for I/O module failure, and correct, as needed.
Solid red Critical link failure present with failed communication device. Device
detected error that prevents it from communicating on the network. Verify that adapter and terminal bases are properly
installed, and reinstall, as needed.
Flashing red/green Communication faulted device - the device detected a network access
error and is in communication faulted state. Device received and accepted
an Identify Communication Faulted Request - long protocol message. Verify adapter is properly installed, and reinstall, as
needed.