Rockwell Automation 1769-L23E-QB1B_QBFC1B_QBFC1B CompactLogix Packaged Controller Installation Instructions - Manual (Page 41)

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