Rockwell Automation 1761-NET-ENIW MicroLogix Ethernet Interface (ENI) User Manual - Manual (Page 124)

Publication 1761-UM006E-EN-P - August 2005
9-4 Troubleshooting
Table 9.5 Series C LED Indicators
LED Description Color State Indicates
POWER module power green on The module is powered.
off The module does not have power.
TX/RX RS-232 data
transmission
indicator green flashing Data is being transmitted or received over the RS-232 port.
off No RS-232 traffic.
10
10-Base-T
Ethernet link
status and data
transmission
indicator
off No link or continuous data activity on 10MB Ethernet.
amber on 10-Base-T half-duplex: Link is good, but there is no data activity.
flashing
10-Base-T half-duplex: Link is good with sporadic data activity.
(1)
green
on 10-Base-T full-duplex: Link is good, but there is no data activity.
flashing
10-Base-T full-duplex: Link is good with sporadic data activity.
(1)
100
100-Base-T
Ethernet link
status and data
transmission
indicator
off No link or continuous data activity on 100MB Ethernet.
amber on 100-Base-T half-duplex: Link is good, but there is no data activity.
flashing
100-Base-T half-duplex: Link is good with sporadic data activity.
(1)
green
on 100-Base-T full-duplex: Link is good, but there is no data activity.
flashing
100-Base-T full-duplex: Link is good with sporadic data activity. (1)
FAULT fault condition
indicator red on lit when a fault condition is present, possible causes
• Duplicated IP address on network
• Network controller error
flashing one of the following:
• faulty network connection at power up
• ENI/ENIW does not have a valid IP address
• No BootP/DHCP response
off Hardware is functioning normally
(1) Network activity is not necessarily to/from the ENI/ENIW.