Troubleshoot The Module - AB Quality 1756-ENBT ControlLogix Installation Instructions Manual

16 ControlLogix EtherNet/IP Bridge Module

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
Off
Flashing Green
Green
Flashing Red
Red
Publication
1756-IN019C-EN-P - November 2004
Status
Not Powered,
No IP Address
No Connections
CIP Connections
Connection Timeout
Duplicate IP Address
Description
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.
Module has obtained an IP address,
but has no established connections.
Module has an IP address and at least
one established connection.
One or more of the connections in
which the module is the target has
timed out.
Module has detected that its IP
address is already in use. Assign a
unique IP address to the module.