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