User manual

178 Publication ENET-UM001I-EN-P - January 2010
Appendix A Status Indicators
1769-L23E-QB1B and
1769-L23E-QBFC1B
Controllers Status
Indicators
The 1769-L23E-Q1B and 1769-L23E-QBFC1B CompactLogix controllers
have several status indicators.
1769-L2x CompactLogix Controller Status Indicators
OK Status Indicators
Indicator Status Description
OK Off Verify that the module has 24V DC chassis power and that the module is completely
inserted into chassis and back
plane.
Green The module is operating correctly.
Flashing green The module is not configured.
Red The module detected an unrecoverable fault. Cycle pow
er to the module. If this does not
clear the fault, replace the module.
Flashing red The module detected a recoverable fault. A configuration error may have caused the fault.
Chec
k the module configuration. If necessary, reconfigure the module.
Red and alphanumeric display
scrolls 'Image Update
Needed'
Update the firmware image. Once the image is updated, cycle power. If this does not clear
the fault, replace the module.
Flashing red and green The module is performing a power-up self-test.
TIP
When power is first applied to the controller, the OK, NS, MS,
and LNK status indicators display a complex sequence of
varying red and green states. This sequence indicates the
power-up self test and takes approximately 1…2 minutes for
the packaged controller to complete.
CompactLogix L23E
I/O
DCH 0
FORCE
RUN
BATT
OK
MS
IP
CH 1
CH 0
CompactLogix L23E
NS
LNK
Packaged Controller
Status Indicator
Module Status Indicator
Network and Link
Status Indicator
RS-232 Serial Port
Status Indicators
I/O Status Indicators
DC Inputs
DC Outputs Power Supply Status Analog I/O HSC