Rockwell Automation 1756-ENBT ControlLogix EtherNet/IP Bridge Module Installation Instructions - Manual (Page 16)

16 ControlLogix EtherNet/IP Bridge Module
Publication 1756-IN019C-EN-P - November 2004
Troubleshoot the Module
If the alphanumeric display and LED indicators do not sequence through the
expected states refer to the following troubleshooting tables. The three
bi-color (red/green) LED status indicators on the 1756-ENBT module
provide diagnostic information about the module and its connections to the
network.
NET (Network) Status Indicator
The Network Status LED provides the following information:
State Status Description
Off Not Powered,
No IP Address
Module is not powered, or does not
have an IP address.
• Verify there is chassis power and
the module is completely inserted
into the chassis and backplane.
• Make sure the module has been
configured.
Flashing Green No Connections Module has obtained an IP address,
but has no established connections.
Green CIP Connections Module has an IP address and at least
one established connection.
Flashing Red Connection Timeout One or more of the connections in
which the module is the target has
timed out.
Red Duplicate IP Address Module has detected that its IP
address is already in use. Assign a
unique IP address to the module.