Rockwell Automation 2708-DH5B2L_DH5B4L Attended Workstation - Manual (Page 19)

Chapter 2
Installing a Network
2–6
NON-MASTER Connection
The following connections are NON-MASTER connections:
Normal
Concentrator
Alternate
Alternate Master
Alternate Sub-Master
All Non-Master workstations, with the exception of the last workstation in
the network, will have a cable going into and a cable coming out of the
network connector. This will cause two wires to be installed in each
connector socket. This is shown on Figure 2.8.
Figure 2.8
Two Wires in a Connector Socket
Twist the network (–) wires (black) together and place them in the black
connector socket and tighten the screw. Next, twist the network (+) wires
(red) together and place them in the red connector socket and tighten the
screw. The only cable leads left should be the drain or shield wires. Twist
these together and place them in the empty socket that has NO wire going to
the DB-9 connector. Tighten the screw and then examine all connections to
make sure they are secure and that no wires are touching any adjacent
connections to cause short circuits.
If the cable was cut and stripped according to instructions, it should be
straightforward to put the shroud on the network connector and complete the
assembly. When possible, it is advantageous to use the cable restraint device
in the connector to avoid pulling connections loose or breaking the wire.
Remember, cabling problems are the number one cause of problems in a
network.
Simple Network (cont’d)