Status indicators – Rockwell Automation 1768-L43_L45_L43S_L45S CompactLogix Controllers Installation Instructions User Manual
Page 23

CompactLogix Controllers 23
Publication
1768-IN004D-EN-P - December 2009
Status Indicators
Controller Status Indicators
Indicator
State
Description
PWR
Green
The controller is providing power to 1768 modules in
the system.
Off or red
See
Troubleshoot System Power on page 28
I/O PWR
Off
Replace the controller.
Green
The controller is operating properly.
Flashing red/green
or solid red
Troubleshoot System Power on page 28
RUN
Off
The controller is in PROG or Test mode.
Green
The controller is in RUN mode.
FORCE
Off
No tags contain I/O force values or I/O forces are
inactive (disabled).
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. Enable forces or remove the individual
I/O from being forced.
MEM
SAVE
Off
The user program and configuration data are not
actively being saved to flash memory.
Green
The use program and configuration data are being
saved to flash memory.
I/O
Off
There are no devices in the I/O configuration of the
controller or the controller does not contain a project.
Green
The controller is communicating with all of the devices
in its I/O configuration.
Flashing green
One or more devices in the controller’s I/O configuration
are not responding.
See
Troubleshoot a Nonresponsive Module on page 27
.
Flashing red
The controller is not communicating with any of the
devices in its I/O configuration.
See
Troubleshoot a Nonresponsive Module on page 27
.