CompactLogix Controller
41
Rockwell Automation Publication 1769-IN082C-EN-P - February 2013
I/O Status Indicators
Digital Inputs Status Indicators
There is one status indicator for each digital input point of the CompactLogix packaged
controller. When an input is ON, the corresponding input light is on (amber).
Digital Outputs Status Indicators
There is one status indicator for each digital output point of the CompactLogix packaged
controller. When an output is ON, the corresponding output light is on (amber).
Analog I/O Status Indicator
The analog I/O have one status indicator - the OK status indicator. If the indicator is green, the
analog I/O have power, have passed internal diagnostics, and are communicating properly. If
analog I/O OK indicator is off, a fault is present.
High-speed Counter Status Indicators
The high-speed counters have 12 status indicators.
Indicator
Status
Description
0,1,2, and 3
Amber
The corresponding output is ON.
A0, A1, B0, B1, Z0,
and Z1
Amber
The corresponding input is ON (amber).
FUSE
Red
An overcurrent condition is present.
OK
Off
No power to the HSC.
Flashing red, brief
The HSC is testing itself (this usually occurs at start-up).
Steady green
The HSC is operating normally.
Flashing green
The HSC is not in Run mode.
Steady red
A fault has occurred.
Flashing red, continuous
A HSC configuration error exists.
CompactLogix
L23E
DC Inputs
DC Outputs
Analog I/O
HSC
Power Supply Status
Allen-Bradley Parts
