Check The Ok Led - AB Quality 1756-ENBT ControlLogix Installation Instructions Manual

Check the OK LED

1. What color is the OK LED?
If: Then:
solid green The controller is OK and its
firmware has been updated.
flashing red The controller is OK but it requires a
firmware update.
solid red The memory board of the controller
may not be compatible with the
revision of firmware.
2. Is this a ControlLogix5555 controller?
If:
No
Yes
ControlLogix® Controller and Memory Board 27
Then:
The controller is not operational. Contact your Rockwell
Automation representative or local distributor.
Go to step 3.
Publication
OK LED
42525
Actions:
No further actions are required.
However, the revision of firmware
must be compatible with your
revision of RSLogix 5000 software.
Go to "Determine Which Firmware
Revisions to Use" on page 10.
Go to step 2.
1756-IN101J-EN-P - November 2004