Document Reference No.: ES_000086

ES-R-2x01B-M RS-232 to RS-422/RS-485 Converters Manual

Version 1.0

Clearance No.: ES

©2010 - 2011 EasySYNC Ltd.

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1 Introduction

The EasySYNC ES-R-2001B-M and ES-R-2101B-M are used to convert RS-232 signals to RS-422/RS-485

signals. The converters provide instant connectivity to RS-422/RS-485 communication devices for factory

automation equipment, multi-drop data collection devices, barcode readers, time clocks, scales, data

entry terminals, PC to PC long distance communications (up to 1.3KM) and serial communication in harsh

environments.

The ES-R-2001B-M and ES-R-2101B-M provide an industrial solution for applications requiring single

node or multi-drop communications over short or long distances.

In RS-485 half-duplex mode, the ES-R-2001B-M and ES-R-2101B-M also provide automatic data

transmit/receive control.

This user guide covers the following models:

RS-232 to RS-422/RS-485 Converter

(ES-R-2001B-M)

Opto-isolated RS-232 to RS-422/RS-485 Converter

(ES-R-2101B-M)