Rockwell Automation 1747-L40 SLC 500 Fixed Hardware Style - Manual (Page 121)

Appendix A
Setting Up the DH-485 Network
A–16
You can connect an unpowered link coupler to the DH–485 network without
disrupting network activity. In addition, if an SLC 500 controller powers a
link coupler that is connected to the DH–485 network, network activity will
not be disrupted should the SLC 500 controller be removed from the link
coupler.
Installing and Attaching the Link Couplers
1. Take care when installing the link coupler in an enclosure so that the
cable connecting the SLC 500 controller to the link coupler does not hit
the enclosure door.
2. Carefully plug the terminal block into the DH–485 port on the link
coupler you are putting on the network. Allow enough cable slack to
prevent stress on the plug.
3. Provide strain relief for the Belden #9842 cable after it is wired to the
terminal block. This guards against breakage of the Belden cable wires.