22 Rockwell Automation Publication 2080-UM002M-EN-E - April 2022
Chapter 1 Hardware Overview
Embedded Ethernet Support
For Micro850 and Micro870 controllers, a 10/100 Base-T Port (with embedded
green and yellow LED indicators) is available for connection to an Ethernet
network through any standard RJ-45 Ethernet cable. The LED indicators serve
as indicators for transmit and receive status.
Micro850 and Micro870 controllers support Ethernet crossover cables
(2711P-CBL-EX04).
Ethernet Status Indication
Micro850 and Micro870 controllers also support two LEDs for EtherNet/IPâ„¢ to
indicate the following:
• Module status
•Network status
See Troubleshooting
on page 303 for descriptions of Module and Network
status indicators.
Table 4 - Embedded Serial Port Cable Selection Chart
Connectors Length Cat. No. Connectors Length Cat. No.
8-pin Mini DIN to 8-pin Mini DIN 0.5 m (1.5 ft)
1761-CBL-AM00
(1)
8-pin Mini DIN to 9-pin D Shell 0.5 m (1.5 ft)
1761-CBL-AP00
(1)
8-pin Mini DIN to 8-pin Mini DIN 2 m (6.5 ft)
1761-CBL-HM02
(1)
8-pin Mini DIN to 9-pin D Shell 2 m (6.5 ft)
1761-CBL-PM02
(1)
8-pin Mini DIN to 8-pin Mini DIN (with lock
mechanism on both connectors)
2 m (6.5 ft) 1761-CBL-AH02
8-pin Mini DIN with lock mechanism to
9-pin D Shell
2 m (6.5 ft) 1761-CBL-PH02
—
8-pin Mini DIN to 6-pin RS-485 terminal
block
30 cm (11.8in.) 1763-NC01 series A
(1) Series C or later for Class 1 Div 2 applications.
yellow LED
green LED
RJ-45 connector
RJ-45 Ethernet Port Pin Mapping
Contact
Number
Signal Direction Primary Function
1TX+OUTTransmit data +
2TX-OUTTransmit data -
3RX+IN
Differential Ethernet Receive
Data +
4Terminated
5Terminated
6RX-IN
Differential Ethernet Receive
Data -
7Terminated
8Terminated
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).
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