Table 2 interpreting network status – Rockwell Automation 1788-CNCR ControlNet Daughtercard Installation Instructions User Manual
Page 16
 
16 ControlNet Daughtercard
Publication 1788-IN002C-EN-P - April 2004
Table 2 Interpreting Network Status
Indicator
Color
Probable Cause
Recommended Action
A
or
B
(when viewed 
independently)
Off
Channel disabled
Program network for redundant media,
if required.
Steady Green
Normal operation
No action required.
Flashing 
Green/Off
Temporary network 
errors
None, unit will self-correct
Node is not 
configured to go on 
line
Make sure the configuration keeper node is 
present and working.
Flashing 
Red/Off
Media fault
• Check media for broken cables, loose
connectors, missing terminators, etc.
• If condition persists, refer to ContolNet
Coax Media Planning and Installation 
Manual, publication CNET-IN002.
No other nodes 
present on network
Add other nodes to the network.
Flashing 
Red/Green
Incorrect network
configuration
Cycle power or reset unit. If fault persists, 
contact your Rockwell Automation 
representative or distributor.
Indicator
Color
Probable Cause
Recommended Action
A
and
B
(when viewed 
together)
Off
See the MS indicator 
for additional 
information.
No action required or apply power.
Steady Red
Faulted unit
Cycle power or reset unit. If fault persists, 
contact your Rockwell Automation 
representative or distributor.
Alternating 
Red/Green
Self-test
No action required.
Alternating 
Red/Off
Incorrect node 
configuration
Check network address and other
ControlNet configuration parameters.