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