Rockwell Automation 1764-xxxx MICROLOGIX 1500 PROGRAMMABLE CONTROLLERS - Manual (Page 82)

Publication 1764-UM001B-EN-P - April 2002
4-14 Communication Connections
Multiple Cable Connection
When connecting multiple cables to the DH-485 connector, use the
following diagram.
Grounding and Terminating the DH-485 Network
Only one connector at the end of the link must have Terminals 1 and
2 jumpered together. This provides an earth ground connection for
the shield of the communication cable. Both ends of the network must
have Terminals 5 and 6 jumpered together, as shown below. This
connects the termination impedance (of 120
Ω
) that is built into each
AIC+ as required by the DH-485 specification.
Table 4.6 Connections using Belden #3106A Cable
For this Wire/Pair Connect this Wire To this Terminal
Shield/Drain Non-jacketed Terminal 2 - Shield
Blue Blue Terminal 3 - (Common)
White/Orange White with Orange
Stripe Terminal 4 - (Data B)
Orange with White
Stripe Terminal 5 - (Data A)
Table 4.7 Connections using Belden #9842 Cable
For this Wire/Pair Connect this Wire To this Terminal
Shield/Drain Non-jacketed Terminal 2 - Shield
Blue/White White with Blue Stripe Cut back - no
connection
(1)
(1) To prevent confusion when installing the communication cable, cut back the white with blue stripe wire
immediately after the insulation jacket is removed. This wire is not used by DH-485.
Blue with White Stripe Terminal 3 -
(Common)
White/Orange White with Orange
Stripe Terminal 4 - (Data B)
Orange with White
Stripe Terminal 5 - (Data A)
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