Allen-Bradley DH-485 User Manual page 12

Chapter 2
Installing the KF3
Host Computer
2 4
Connecting via a DH 485 Link (Point to Point Configuration)
Figure 2.4 shows a point-to-point link consisting of a single SLC 500
programmable controller and one host computer station.
Figure 2.4
A Point to Point DH 485 Link
RS 232C
Cable
KF3
This configuration requires a KF3 and one link coupler. The SLC 500
controller is connected to the link coupler with a 1747-C11 cable. The
KF3 is connected directly to the link coupler. In this topology, both the
KF3 and the SLC 500 are end nodes.
Construct a cable to attach the DH-485 connector on the back of the
KF3 module to the link coupler. Figure 2.5 shows the connection for a
point-to-point DH-485 application. The shield ground could be at either
end, but must be at one end, and one end only.
Figure 2.5
Connection for KF3 and Single SLC
KF3 on one end of the link
DH 485 Cable
Belden #9842
Link
Coupler
1747 AIC
1747 C11 Cable
Jumper to ground
shield connector
Jumper to
terminate node
SLC 500 or other device at the other end of the link
* The black wire of the white/black pair should be cut back (no connection).
SLC 500
Controller
Jumper to
terminate node