Installation Instructions User Manual

18 ControlLogix DH-485 Communications Module
Publication
1756-IN587A-EN-P - September 2005
Set the Network Parameters and Configure the Module
You must use RSLinx software, version 2.43 or later, to set all network
parameters and to configure the 1756DH-485 module.
LED Actions
Channel A or B
Indicator
Channel Status Recommended Action
Off Not online. Place channel online.
Solid Green Operating. None, normal operation.
Flashing Green No other node on the
network.
Check cables.
Solid Red Hardware fault. Reboot module. If red reoccurs,
replace module.
Flashing Red Either:
• Faulted adapters
detected.
• Duplicate node
detected
• Check cables.
Check power at other racks.
• Check node address.