CompactLogix Controller
39
Rockwell Automation Publication 1769-IN082C-EN-P - February 2013
Network Status (NS) Indicator
The Network Status (NS) indicator is located to the
right of the Ethernet port and is one of the EtherNet/IP
status indicators.
Link Status (LNK) Indicator
The Link (LNK) status indicator is also located to the
right of the Ethernet port, below the NS indicator. It
is also an EtherNet/IP network status indicator.
Status
Description
Action
Off
The port is not initialized; it does not have an IP
address and is operating in BOOTP mode.
Verify that the BOOTP server is running.
Flashing green
The port has an IP address, but no CIP connections
are established.
If no connections are configured, no action is
required.
If connections are configured, check connection
originator for connection error code.
Steady green
The port has an IP address and CIP connections
(Class 1 or Class 3) are established.
Normal operation - No action is required.
Steady red
The port has detected that the assigned IP address
is already in use.
Verify that all IP addresses are unique.
Flashing red/green
The port is performing its power-up self test.
Normal operation - No action is required.
Status
Description
Action
Off
The port is not connected to a powered Ethernet device.
Therefore, the port cannot communicate on the Ethernet
network.
Verify that all Ethernet cables are connected.
Verify that Ethernet switch is powered.
Flashing green
The port is performing its power-up self-test.
Normal operation - no action is required.
The port is communicating on the Ethernet network.
Steady green
The port is connected to a powered Ethernet device.
Therefore, the port can communicate on the Ethernet
network.
NS
LNK
NS
LNK
Allen-Bradley Parts
