Rockwell Automation 56AMXN ControlLogix/AutoMax/Communication/Module - Manual (Page 17)

DCSNet/RE RIO Module 17
Publication 56AMXN-IN002A-EN-P November 2002
Interpreting the LED Status Indicators
The three LED status indicators on the module provide information about your
module and the status of each channel. The following tables outline the indicator
condition and the corresponding status, and explain what each condition means.
NET LED – DCS/RIO Network Status
The NET LED indicates the status of the network connection. It is green if the
network status is good. If it is red, the following table shows possible causes.
Operating
Mode Meaning
DCS Slave Red if no master is heard or Active
DCS Master Red if no Drops are found or if a Drop goes offline (1
sec)
RIO Master Red if not all drops in configuration are active, or if
extra drops are found or any other configuration
mismatch exists
CLX LED – ControlBus Status
The CLX LED indicates the status of communication with the ControlLogix
processor.
Color Meaning
Red The module has returned an error, received an error or
refused a connection from the backplane. Look at the debug
log in 56AmxnMon for further information.
Yellow No errors, but no activity
Green An active connection is open or Bridging is active or DCS
registers are being accessed