Hardware reference guide

35013379 02 October 2007 291

Quantum Modbus Plus

Networking on Fiber Module

140NOM25200 Quantum Networking Modbus Plus on Fiber Module

Overview The following information pertains to the Modbus Plus on Fiber module,

140NOM25200. The Modbus Plus on Fiber module provides connectivity to Modbus

Plus nodes by fiber cable.

There are many benefits that result from the use of fiber optics. Some of these

include:

z Longer distances between nodes (up to 3 km), thereby, increasing the total length

of the network,

z Fiber optic medium is not susceptible to the effects of electromagnetic

interference, RF interference, and lightning,

z Intrinsically safe links that are required in many hazardous industrial

environments,

z Total electrical isolation between terminal points on the link.

Documentation

For more detailed information on fiber optic network repeaters, see the Fiber

Repeater User Guide, part number GM-FIBR-OPT.

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