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
See 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.
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