Rockwell Automation 1785-Lxxx Enhanced and Ethernet PLC-5 Programmable Controllers - Manual (Page 353)

Publication 1785-UM012D-EN-P - July 2005
Troubleshooting F-5
Extended-Local I/O Troubleshooting
Ethernet Status Indicator
Indicator Color Channel Mode Description Probable Cause Recommended Action
2 green
(steady) Extended local I/O
Scanner active extended-local I/O
link, all adapter modules are
present and not faulted normal operation no action required
green
(blinking
rapidly or
slowly) at least one adapter is
faulted or has failed • power off at
extended-local
I/O rack
• communication
fault
• cable broken
• restore power to the
rack
• restart adapters using
the controller restart
lockout pushbutton
• repair cable
red
(steady) hardware fault hardware error Turn power off, then on.
Check that the software
configurations match the
hardware set-up.
Replace the controller.
red
(blinking
rapidly or
slowly) Extended local I/O
Scanner all adapters faulted • cable
disconnected or
broken
• terminator off
• power off at
extended-local
racks
• repair cable
• replace or repair
terminator
• restore power to racks
off channel offline channel is not
being used Place channel online if
needed
BATT
PROC
FORCE
COMM
PROG
RUN
R
E
M
PLC-5/40L and -5/60L
processors only
Indicator Color Description Probable Cause Recommended Action
STAT Solid red Critical hardware fault Controller requires
internal repair Contact your local
Allen-Bradley
representative
Blinking red Hardware or software fault
(detected and reported via a
code) Fault-code dependent Contact Allen-Bradley’s
Global Technical Support
(GTS)
Off Ethernet interface is functioning
properly but it is not attached to
an active Ethernet network Normal operation Attach the Controller to an
active Ethernet network
Green Ethernet channel 2 is functioning
properly and has detected that it
is connected to an active
Ethernet network Normal operation No action required
BATT
PROC
FORCE
COMM
PROG
RUN
R
E
M
ENET
STAT