Rockwell Automation 1756-ENET/B ControlLogix Ethernet Communication Interface Module User Manual - Manual (Page 97)

1 Publication 1756-UM051B-EN-P - November 2000
Appendix
A
LED Status Indicators
Interpreting the Status
Indicators The faceplate of the 1756-ENET/B module is provided with LED
indicators that display the module status and transmit/receive status.
The following table describes module health indicator displays,
module status, and recommended action:
The following table describes the displays of the transmit (TX) and
receive (RX) indicators:
Detailed network diagnostics are provided by the module’s Web
pages, which can be accessed through Netscape or Microsoft Internet
Explorer. See Appendix B.
If the OK indicator is: then module status is: take this action:
Off Not operating. Apply chassis power.
Verify module is completely
inserted into chassis and
backplane.
Red, then flashing red
or flashing green Performing powerup
diagnostics. None, normal operation.
Green Operating. None.
Red flashing Not configured. Configure the module.
Red Unrecoverable fault. Repair or replace module.
If this indicator: is: the module is:
TXD Green Transmitting data
Off Not active
RXD Green Receiving data
Off Not active
31153-M
AUI
10 BASET
1756-ENET
RXD TXD OK
ETHERNET
TXD
Indicator
OK Indicator
RXD
Indicator
Front View