Rockwell Automation Publication 1734-UM001E-EN-P - July 2013
152 Troubleshoot with the Indicators
1734-ACNR ControlNet Adapter
Module
Status
PointBus
Status
ControlNet A
Status
1734-ACNR
ControlNet B
Status
Field
Power
System
Power
A
B
02
System Power
Field Power
43265
Module Status
POINTBus Status
ControlNet A Status
ControlNet B Status
Indication Probable Cause Recommended Action
Module Status
Off No power applied to device. Apply power to device.
Alternating red/
green
LED power cycle test (module self-test) is present. None.
Flashing red Recoverable fault has occurred:
• Firmware (NVS) update
• MAC ID changed
• CPU load exceeded
• Complete firmware update.
• Return module to correct node address.
• Reduce CPU load.
Solid red Unrecoverable fault has occurred:
• Self test failure (checksum failure at power cycle
• Ramtest failure at power cycle)
• Firmware fatal error
Replace 1734-ACNR adapter.
Flashing green Waiting for connection or ControlNet cable break. Check cable and make connection, as needed.
Solid green Module is operating correctly (normal mode). None.
