Rockwell Automation 1785-L20C_L40C, D17856.5.14 ControlNet PLC-5 Programmable Controllers User Manual - Manual (Page 66)

Chapter 5
Monitoring and Troubleshooting Your
ControlNet System
5-4
Indicator State ➀ Probable Cause Recommended Action(s)
Off No power
None
Off No power
Power up
Cycle power or reset unit
and
A B
Steady Red Faulted unit
If fault persists, contact your AllenĆBradley Company, Inc.
representative or distributor
A B
Alternating
Red/Green
SelfĆtest None
Alternating
Red/Off
Incorrect node configuration
Check network address and other ControlNet
configuration parameters
Off Channel disabled
None
Off Channel disabled
Configure for ControlNet communication
Steady
Green
Normal operation None
Temporary errors
None
Flashing
G /Off
Temporary errors
Make sure that ControlNet is properly terminated
or
A B
g
Green/Off
Node is not configured to go online
Make sure the Configuration Manager node is present
and working ②
A B
Flashing
Red/Off
Media fault
Check media for broken cables, loose connectors, missing
terminators, etc.
Red/Off
No other nodes present on network Add other nodes to the network
Flashing
Cycle power or reset unit
Flashing
Red/Green
Incorrect network configuration
If fault persists, contact your AllenĆBradley Company, Inc.
representative or distributor
➀ Definition of terms:
• alternatingĊ the two indicators alternate between the two defined states at the same time (applies to both indicators viewed together);
the two indicators are always in opposite states, out of phase
• flashingĊ the indicator alternates between the two defined states (applies to each indicator viewed independent of the other); if both
indicators are flashing, they flash together, in phase
• steadyĊ indicator is on continuously in the defined state
② The Configuration Manager nodeĊat node 01, the controlling processorĊ is the node responsible for distributing ControlNet configuration data
to all nodes on the ControlNet network.