Rockwell Automation 1747-L40 SLC 500 Fixed Hardware Style - Manual (Page 114)

Appendix A
Setting Up the DH-485 Network
A–9
To install a DH–485 network, you will need tools to strip the shielded cable
and to attach the cable and terminators to the isolated link coupler.
Install the DH–485 network using the following tools (or equivalent):
Description Part Number Manufacturer
Shielded Twisted Pair Cable #9842 Belden
Stripping Tool 45-164 Ideal Industries
1/8 " Slotted Screwdriver NA NA
DH-485 Communication Cable and Isolated Link Coupler
The link coupler provides a connection for each node. The isolated link
coupler electrically isolates the DH–485 communication interface from the
processor and peripheral connections. Electrical–optical isolation is
provided to 1500 VDC.
The suggested DH–485 communication cable is Belden #9842 cable. The
cable is jacketed and shielded with two twisted wire pairs and a drain wire.
One pair provides a balanced signal line, and one wire of the other pair is
used for a common reference line between all nodes on the network. The
shield reduces the effect of electrostatic noise from the industrial
environment on the network communication.
DH-485 Network Installation