Rockwell Automation 1785-Lx0C15 ControlNet PLC-5 Programmable Controllers User Manual - Manual (Page 95)

1785-UM022C-EN-P - February 2008
5-5
Using the DH+/RIO
Status Indicators
Indicator Color Channel Mode Description Probable Cause Recommended Action
Green
(steady)
Remote I/O
Scanner Active Remote I/O link, all
adapter modules are
present and not faulted Normal
operation No action required
Remote I/O
Adapter Communicating with
scanner
DH+ Processor is transmitting
or receiving on DH+ link
Green
(blinking
rapidly or
slowly)
Remote I/O
Scanner At least one adapter is
faulted or has failed • Power off at
remote rack
• Cable broken
• Restore power to the
rack
• Repair cable
DH+ No other nodes on network
Red
(steady)
Remote I/O
Scanner
Remote I/O
Adapter
DH+
Hardware fault Hardware error • Turn power off, then
on.
• Check that the
software
configurations
match the hardware
set-up.
• Replace the
processor.
Red
(blinking
rapidly or
slowly)
Remote I/O
Scanner Faulted adapters detected • Cable not
connected or
is broken
• Power off at
remote racks
• Repair cable
• Restore power to
racks
DH+ Bad communication on
DH+ Duplicate node
detected Correct station address
Off Remote I/O
Scanner
Remote I/O
Adapter
DH+
Channel offline Channel is not
being used Place channel online if
needed
A B
or