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Terminate the link – Rockwell Automation 1785-Vx0B, D17856.5.9 PLC-5 VME VMEbus Programmable Controllers User Manual User Manual

Page 30

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Chapter 2

Installation

2-8

Figure 2.2
Remote I/O Terminal Connectors

To connect remote I/O cable, do the following:

1. Run the cable (1770-CD) from the processor to each remote I/O

adapter module or processor in the remote I/O system.

2. Connect the signal conductor with blue insulation to the 3-pin

connector terminal labeled 1 on the processor and to each remote
I/O adapter module (or PLC-5 adapter) in the remote I/O system.

3. Connect the signal conductor with clear insulation to the 3-pin

connector terminal labeled 2.

4. Connect the shield drain wire to the 3-pin terminal labeled SH.

5. Tie wrap the remote I/O network cable to the chassis to relieve strain

on the cable.

Processor channel must be configured for remote I/O communication.

PLC-5/V40B

PLC-5/V40L

1771-ASB Remote
I/O Adapter Module

Remote I/O
Terminal
Connectors

Blue
Shield
Clear

Remote I/O
Terminal
Connectors

Blue
Shield
Clear

1 Line 1
2 Shield
3 Line 2
4 Line 1
5 Shield
6 Line 2
7 No Connection
8 No Connection
9 No Connection
10 No Connection
11 In
12 Ret

Cable

Reset

19539

Blue
Shield
Clear

Chan 0

Chan 2

Chan 1

Cable for
daisy-chain
configuration

Terminate the Link

For proper operation, terminate both ends of a remote I/O link by using the
external resistors shipped with the programmable controller. Use either a
150

W or 82W terminator.

If your remote I/O link:

Use this resistor rating:

The maximum number of
physical devices you
can connect on the link

The maximum number of
racks you can scan on
the link

operates at 230.4 kbps

82

W

32

16

operates at 57.6 kbps or 115.2 kbps and no
devices listed in Table 2.A are on the link