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Controller LEDs
Indicator:
Color:
RUN
off
solid green
FORCE
off
solid amber
flashing
amber
BAT
off
solid red
I/O
off
solid green
flashing green
flashing red
OK
off
flashing red
solid red
solid green
flashing green
Description:
The controller is in Program or Test mode.
The controller is in Run mode.
No tags contain I/O force values.
I/O forces are inactive (disabled).
I/O forces are active (enabled).
I/O force values may or may not exist.
One or more input or output addresses have been forced to an On or Off
state, but the forces have not been enabled.
The battery supports memory.
Either the battery is:
• not installed.
• 95% discharged and should be replaced.
Either:
• There are no devices in the I/O configuration of the controller.
• The controller does not contain a project (controller memory is empty).
The controller is communicating with all the devices in its I/O configuration.
One or more devices in the I/O configuration of the controller are not
responding.
The controller is not communicating to any devices.
The controller is faulted.
No power is applied.
If the controller is:
a new controller
not a new controller
The controller detected a non-recoverable fault, so it cleared the project
from memory. To recover:
1. Cycle power to the chassis.
2. Download the project.
3. Change to Run mode.
If the OK LED remains solid red, contact your Rockwell Automation
representative or local distributor.
Controller is OK.
The controller is storing or loading a project to or from nonvolatile memory.
1769-L31 CompactLogix™ Controller
Then:
the controller requires a firmware update
A major fault occurred.
To clear the fault, either:
- Turn the keyswitch from PROG to RUN to PROG
- Go online with RSLogix 5000 software
Publication 1769-IN069A-EN-P - March 2004
21
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