Rockwell Automation 1756-DHRIOXT ControlLogix-XT Data Highway Plus-Remote I/O Communication Interface Module - Manual (Page 25)

ControlLogix-XT Data Highway Plus-Remote I/O Interface Module 25
Publication 1756-IN638A-EN-P - March 2009
Channel A and B Indicators
State Channel Mode Description Recommended Actions
Off All Not on line. Place channel on line.
Green RIO scanner Active RIO link. All
adapter modules are
present and not
faulted. None - this is normal
operation.
DH+ Operating. None - this is normal
operation.
Green
flashing RIO scanner One or more nodes
faulted or failed. Check power at other racks.
DH+ No other node on the
network. Check cables.
Red All Hardware fault. Reboot module. If red
reoccurs, replace module.
Red
flashing RIO scanner Faulted adapters
detected. • Check cables.
• Check power at other
chassis.
DH+ Duplicate node
detected. Check node address.