20
Rockwell Automation Publication 2080-UM002L-EN-E - November 2021
Chapter 1 Hardware Overview
Micro850 and Micro870 controllers support Ethernet crossover cables
(2711P-CBL-EX04).
Ethernet Status Indication
Micro850 and Micro870 controllers also support two LEDs for EtherNet/IP™ to
indicate the following:
•
Module status
•
Network status
See
for descriptions of Module and Network
status indicators.
yellow LED
green LED
RJ-45 connector
RJ-45 Ethernet Port Pin Mapping
Contact
Number
Signal
Direction
Primary Function
1
TX+
OUT
Transmit data +
2
TX-
OUT
Transmit data -
3
RX+
IN
Differential Ethernet Receive
Data +
4
Terminated
5
Terminated
6
RX-
IN
Differential Ethernet Receive
Data -
7
Terminated
8
Terminated
Shield
Chassis Ground
The yellow status LED indicates Link
(solid yellow) or No Link (off).
The green status LED indicates
activity (blinking green) or no activity
(off).