Grounding and terminating the dh-485 network, The table below shows connections for belden #9842 – Rockwell Automation 1761-HHP-B30 MicroLogix 1000 with Hand-Held Programmer (HHP) User Manual

Page 58

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Chapter 3
Connecting the System

3–5

The table below shows connections for Belden #3106A.

For this Wire/Pair

Connect this Wire

To this Terminal

Shield/Drain

Non-jacketed

Terminal 2 – Shield

Blue

Blue

Terminal 3 – (Common)

i e ra e

White with Orange Stripe

Terminal 4 – (Data B)

White/Orange

Orange with White Stripe

Terminal 5 – (Data A)

The table below shows connections for Belden #9842.

For this Wire/Pair

Connect this Wire

To this Terminal

Shield/Drain

Non-jacketed

Terminal 2 – Shield

e

i e

White with Blue Stripe

Cut back – no connection

Blue/White

Blue with White Stripe

Terminal 3 – (Common)

i e ra e

White with Orange Stripe

Terminal 4 – (Data B)

White/Orange

Orange with White Stripe

Terminal 5 – (Data A)

To prevent confusion when installing the communication cable, cut back the white with blue stripe wire
immediately after the the insulation jacket is removed. This wire is not used by DH-485.

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.
This connects the termination impedance (of 120

) that is built into each

AIC+ as required by the DH-485 specification.

End-of-Line Termination

Belden #3106A or #9842 Cable
1219 m (4000 ft) Maximum

Jumper

Jumper

Jumper

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