Installation guide

Planning and Designing RIO Cable System

890 USE 101 00 October 2006

Trunk Splitter Use

Overview The following are examples of trunk splitter use in standalone and Hot Standby

systems.

Using a Trunk

Splitter in a

Standalone

System

Using a single MA-0331-000 splitter as a branching device on the trunk is permitted.

The original requirement when using the MA-0186-X00 as a trunk splitter was that

the trunk extensions when running from it need to be balanced to prevent signal

reflections. The MA-0331-000 splitter has higher port to port isolation so the balance

requirement is not as important, but it should be observed as close as is practical.

The distance between an RIO head and the MA-0331-000 trunk splitter may be

between 8.5 and 100 ft.

CAUTION

Possible equipment failure

The use of more than one splitter as a branching device on the RIO

network is never permitted.

Failure to follow this instruction can result in injury or equipment

damage.

P/S RIO I/O I/O I/O

P/S PLC RIO I/O I/O I/O

Splitter

Tap Tap

First RIO Drop (Branch A) First RIO Drop (Branch B)

Last RIO Drop (Branch A) Last RIO Drop (Branch B)

MA-0331-000

Tap

This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123 www.barr-thorp.com