Allen-Bradley CompactLogix 1769-L23E-QB1B Installation Instructions Manual page 38

38 CompactLogix Controller
Status Description
Off The packaged controller does not have power.
Flashing green The port is in standby mode; it does not have an
IP address and is operating in BOOTP mode.
Steady green The port is operating correctly.
Steady red The packaged controller is holding the port in
reset or the packaged controller has faulted.
The port is performing its power-up self test.
A nonrecoverable fault has occurred.
Flashing red The port firmware is being updated.
Rockwell Automation Publication 1769-IN082C-EN-P - February 2013
Action
Check the controller power supply.
Verify that the BOOTP server is running.
Normal operation - no action is required.
Clear the fault.
If the fault will not clear, replace the packaged
controller.
Normal operation - no action is required.
Cycle power to the controller.
If the fault will not clear, replace the packaged
controller.
Normal operation - no action is required.