End-of-line termination, Connecting the aic – Rockwell Automation 1766-Lxxxx MicroLogix 1400 Programmable Controllers User Manual User Manual
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Rockwell Automation Publication 1766-UM001H-EN-P - May 2014
Chapter 4 Communication Connections
End-of-Line Termination
MicroLogix 1400 Channel 0 to DH-485 Communication Cable Pinout
When connecting MicroLogix 1400 Channel 0 to DH-485 communication
cable pinout using an RS-232 cable, the maximum that the cable length may be
extended is 15.24 m (50 ft). Refer to the following typical pinout:
Connecting the AIC+
You can connect a MicroLogix 1400 controller to a DH-485 network via
Channel 0 directly without using an optical isolator, such as AIC+, catalog
number 1761-NET-AIC, because Channel 0 is isolated. However, you need to
use an AIC+ to connect your PC or other MicroLogix Family products, such as
MicroLogix 1200, to a DH-485 network.
Jumper
Jumper
Belden #3106A or #9842 Cable
1219 m (4000ft) Maximum
Jumper
DTE Device
(MicroLogix
1400
Channel 0)
DCE Device (DH-485
connector)
8-Pin
6-pin
7
TXD
6
Termination
4
RXD
5
A
2
GND
4
B
1
B(+)
3
Common
8
A(-)
2
Shield
5
DCD
1
ChassisGround
6
CTS
3
RTS