Rockwell Automation 1761-NET-ENIW MicroLogix Ethernet Interface (ENI) User Manual - Manual (Page 122)

Publication 1761-UM006E-EN-P - August 2005
9-2 Troubleshooting
LED Sequence at Power-Up The following LED test is performed at power-up.
Table 9.1 Series A/B LED Sequence at Power-Up (No Ethernet Connection)
LED Power-Up Sequence
Ethernet TX/RX, Link and FAULT 1. on solid for 2 seconds
FAULT 2. flashes for 3 seconds
Ethernet TX/RX and FAULT 3. on solid for 1/4 second
RS-232 TX/RX 4. flashes if Baud Rate is configured for Auto
(default)
FAULT 5. off, unless an error condition exists
(see troubleshooting table on page 9-3)
Table 9.2 Series C LED Sequence at Power-Up (No Ethernet Connection)
LED Power-Up Sequence
FAULT 1. flashes for 4 seconds
RS-232 TX/RX 2. flashes if Baud Rate is configured for Auto
(default)
FAULT 3. off, unless an error condition exists
(see troubleshooting table on page 9-4)
Table 9.3 Series D LED Sequence at Power-Up (No Ethernet Connection)
LED Power-Up Sequence
Ethernet Link 1. flashes green once
Ethernet TX/RX 2. flashes amber, then solid green for 1 second
FAULT 3. flashes for 2 seconds
Ethernet TX/RX 4. flashes amber once
RS-232 TX/RX 5. flashes if Baud Rate is configured for Auto
(default)
FAULT 6. off, unless an error condition exists
(see troubleshooting table on page 9-5)