EasySync ES-R-2 01B-M Series, Manual, Page: 2 / 20

Document Reference No.: ES_000086
ES-R-2x01B-M RS-232 to RS-422/RS-485 Converters Manual
Version 1.0
Clearance No.: ES
#
42
©2010 - 2011 EasySYNC Ltd.
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1 Introduction ............................................................................................ 3
2 Specification ............................................................................................ 4
3 Features of the ES-R-2x01B-M ................................................................. 5
3.1 Optical Isolation & Surge Protection (ES-R-2101B-M only) ........................... 5
3.2 Power Supply ................................................................................................ 5
3.3 Enclosure ...................................................................................................... 5
3.4 Configuring for RS-422 and RS-485 Modes ................................................... 5
4 Hardware Installation .............................................................................. 6
4.1 General Notes and Warnings ......................................................................... 6
4.2 RS-232 DCE or DTE Pin Assignment .............................................................. 7
Table 1 Jumper settings for RS-232 DCE or DTE Pin Assignment ......................... 7
4.3 RS-422 and RS-485 Mode Block Configuration .............................................. 7
Table 2 RS-422 and RS-485 configuration ........................................................... 7
4.4 Termination and Biasing Configuration ......................................................... 8
Table 3 Termination and Biasing configuration.................................................... 8
5 Connector Pinout Information ................................................................. 9
5.1 RS-232 Signal Pin-outs of DB-9 Female (DCE) .............................................. 9
5.2 RS-232 Signal Pin-outs of DB-9 Female (DTE) .............................................. 9
5.3 RS-422 Signal Pin-out ................................................................................. 10
5.4 RS-485 Signal Pin-out (half duplex) ............................................................ 12
5.5 RS-485 Signal Pin-out (full duplex) ............................................................ 14
6 Contact Information ...............................................................................16
7 Legal Disclaimer .....................................................................................17
Appendix A - List of Figures and Tables ........................................................18
Appendix B - Revision History .......................................................................19