Rockwell Automation 1761-NET-ENIW MicroLogix Ethernet Interface (ENI) User Manual - Manual (Page 16)

Publication 1761-UM006E-EN-P - August 2005
1-4 Product Overview
After out-of-box power-up, the most common reason for a flashing
red fault LED is because an IP address has not yet been assigned via
BOOTP. Either set up a BOOTP server to assign an IP address or
modify the ENI/ENIW configuration to use a specific IP address or to
obtain an IP address via a DHCP server.
For more detailed information on LED operation, see Chapter 9,
Troubleshooting.
Table 1.3 Series D Descriptions
LED Description Function Color
RS-232
TX/RX
RS-232 data
transmission indicator RS-232 port is transmitting or
receiving data flashing green
no RS-232 traffic off
POWER module power module is powered green
LINK
Ethernet link status and
10-Base-T or
100-Base-T indicator No link off
10-Base-T link amber
100-Base-T link green
Ethernet
TX/RX
Ethernet activity status
and Half Duplex or Full
Duplex status No activity off
Half Duplex activity
(1)
(1) Any Ethernet network activity; not necessarily to or from the ENI/ENIW.
flashing amber
Full Duplex activity
(1) flashing green
FAULT fault condition
indicator lit when a fault condition is
present red or flashing
red
FAULT
LINK
Ethernet TX/RX
RS-232 TX/RX
POWER
Series D