Rockwell Automation Publication 1756-UM004D-EN-P - August 2022 63
Appendix A ControlLogix Network Device Status Indicators
Single-Port Module Status Indicators
Table 18 - Single-port Module Status Indicators
Status Indicator Description Status State
Module Status Display
Alphanumeric display that scrolls messages. For
example, when a module is operating normally, the
display scrolls the module’s IP address.
——
Link Status (LINK)
Indicates the current state of the module regarding
transmission of data on the EtherNet/IP™ network.
Off
One of these conditions exists:
• The module is not powered.
– Verify that there is chassis power.
– Verify that the module is completely inserted
into the chassis and backplane.
– Make sure that the module has been configured.
• No link exists on the port.
Flashing green Activity exists on the port.
Green The port is active, but not receiving traffic.
OK Status (OK)
Indicates the current state of the module. For example,
this status indicator indicates if the module is executing
power-up testing, in the process of a firmware update or
operating normally.
Off
The module is not powered.
• Verify that there is chassis power.
• Verify that the module is completely inserted into
the chassis and backplane.
• Make sure that the module has been configured.
Flashing green
The module is not configured. The Module Status
display scrolls: BOOTP or
DHCP<Mac_address_of_module>
For example: BOOTP 00:0b:db:14:55:35
Configure the module.
Green
The module is operating correctly. The IP address
scrolls across the Module Status display.
Flashing red
The module detected a recoverable minor fault.
Check the module configuration. If necessary,
reconfigure the module.
Red
The module detected an unrecoverable major fault.
Cycle power to the module. If this power cycle does
not clear the fault, replace the module.
Network Status (NET) Indicates if CIP™ connections are established.
Off
One of these conditions exists:
• The module is not powered.
– Verify that there is chassis power.
– Verify that the module is completely inserted
into the chassis and backplane.
– Make sure that the module has been configured.
• The module is powered but does not have an IP
address. Assign an IP address to the module.
Flashing green
The controller has an IP address and one of these
conditions exists:
• The module has not established any CIP
connections.
If connections are configured for this module,
check the connection originator for the
connection error code.
• All connections to the device have timed out or
been closed.
Network Status (NET) Indicates if CIP connections are established.
Green
The module has established at least 1 CIP connection
and is operating properly. The IP address scrolls
across the Module Status display.
Red
The module is in conflict mode. It shares an IP
address with another device on the network. The
current IP address scrolls across the Module Status
display. The display scrolls: OK
<IP_address_of_this_module> Duplicate IP
<Mac_address_of_duplicate_node_detected>
For example: OK 10.88.60.196 Duplicate IP -
00:00:BC:02:34:B4
Change the IP address of the module.
Flashing green/flashing
red
The module is performing its power-up testing.
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