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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.
This manual covers the following products:
Use of EasySYNC devices in life support and/or safety applications is entirely at the user's risk, and the
user agrees to defend, indemnify and hold harmless EasySYNC from any and all damages, claims, suits
or expense resulting from such use.
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EasySYNC Ltd
ES-R-2x01B-M
RS-232 to RS-422/RS-485
Converters Manual
Document Reference No.: ES_000086
ES-R-2001B-M
Unit 1, 2 Seaward Place, Centurion Business Park, Glasgow, G41 1HH, United Kingdom
ES-R-2101B-M
Tel.: +44 (0) 141 418 0181
E-Mail (Support):
support@easysync.co.uk
Copyright © 2010 - 2011 EasySYNC Limited
Version 1.0
Issue Date: 2011-08-24
EasySYNC Ltd
Fax: + 44 (0) 141 418 0110
Web:
http://www.easysync.co.uk
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Table of Contents
Related Manuals for EasySync ES-R-2 01B-M Series
Summary of Contents for EasySync ES-R-2 01B-M Series
- Page 1 Web: http://www.easysync.co.uk Use of EasySYNC devices in life support and/or safety applications is entirely at the user’s risk, and the user agrees to defend, indemnify and hold harmless EasySYNC from any and all damages, claims, suits or expense resulting from such use.
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Page 2: Table Of Contents
RS-485 Signal Pin-out (half duplex) ............12 RS-485 Signal Pin-out (full duplex) ............14 Contact Information ................16 Legal Disclaimer ..................17 Appendix A - List of Figures and Tables ............18 Appendix B - Revision History ...............19 ©2010 - 2011 EasySYNC Ltd. Downloaded from Elcodis.com electronic components distributor... -
Page 3: Introduction
Clearance No.: ES 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... -
Page 4: Specification
RS-485 data signals (full-duplex) : TX-, TX+, RX+, RX-, GND RS-485 data signals (half-duplex) : Data-, Data+, GND LEDs indicate TxD and RxD Wide input power range : 9V DC to 48V DC ©2010 - 2011 EasySYNC Ltd. Downloaded from Elcodis.com electronic components distributor... -
Page 5: Features Of The Es-R-2X01B-M
They also feature jumpers to set the pinout of the RS-232 port to a DCE or DTE configuration, and to enable termination and biasing when required. Please refer to section 4 for more information on the DIP switch and jumper settings available. ©2010 - 2011 EasySYNC Ltd. Downloaded from Elcodis.com... -
Page 6: Hardware Installation
Pull-down Rx- to GND by 750 Ohm Bias resistor). The Tx biasing (Pull-up Tx+ to VCC by 750 Ohm Bias resistor and Pull-down Tx- to GND by 750 Ohm Bias resistor) should not be enabled as this would provide two biasing resistors per line. ©2010 - 2011 EasySYNC Ltd. Downloaded from Elcodis.com... -
Page 7: Rs-232 Dce Or Dte Pin Assignment
RS-422 4 wire with handshaking Full Duplex (4 wire) Half Duplex (2 wire) RS-485 with Echo Half Duplex (2 wire ) without Echo Table 2 RS-422 and RS-485 configuration ©2010 - 2011 EasySYNC Ltd. Downloaded from Elcodis.com electronic components distributor... -
Page 8: Termination And Biasing Configuration
CTS Termination of 120 Ohm. 20-21 disable This function should be enabled for RS-422 mode. Note: See section 4.1 for further information before setting termination and biasing Table 3 Termination and Biasing configuration ©2010 - 2011 EasySYNC Ltd. Downloaded from Elcodis.com electronic components distributor... -
Page 9: Connector Pinout Information
GND = RS232 signal ground DTR = Data Terminal Ready CTS = Clear To Send RTS = Request To Send No Connect Table 5 RS-232 Pin-Out for DB-9 connector (DTE) ©2010 - 2011 EasySYNC Ltd. Downloaded from Elcodis.com electronic components distributor... -
Page 10: Rs-422 Signal Pin-Out
TxD+ = Transmit data, positive polarity RxD+ = Receive data, positive polarity RxD- = Receive data, negative polarity GND = Signal ground Table 7 RS-422 Pin-Out for 5-way terminal block ©2010 - 2011 EasySYNC Ltd. Downloaded from Elcodis.com electronic components distributor... -
Page 11: Figure 4 Rs-422 4 Wire Full Duplex
Twisted pair wires are required for each signal pair. ES-R-2x01B-M RS-422 Device TxD+ RxD+ TxD- RxD- RxD+ TxD+ RxD- TxD- RTS+ CTS+ CTS- RTS- CTS+ RTS+ CTS- RTS- Figure 5 RS-422 with handshaking signals connected ©2010 - 2011 EasySYNC Ltd. Downloaded from Elcodis.com electronic components distributor... -
Page 12: Rs-485 Signal Pin-Out (Half Duplex)
Data+ = Transmit / Receive Data, positive polarity GND = Signal ground Note: Other terminals have no function in this mode and should be left unconnected. Table 9 RS-485 half-duplex pin-out for 5-way terminal block ©2010 - 2011 EasySYNC Ltd. Downloaded from Elcodis.com electronic components distributor... -
Page 13: Figure 6 Rs-485 Half Duplex Wiring
4.1 and 4.4. These should not be enabled if another device on the bus is already providing biasing. Twisted pair wires are required for each signal pair. ES-R-2x01B-M RS-485 Devices Data+ Data- Data+ Data- Data+ Data- Data+ Data- Figure 6 RS-485 Half Duplex Wiring ©2010 - 2011 EasySYNC Ltd. Downloaded from Elcodis.com electronic components distributor... -
Page 14: Rs-485 Signal Pin-Out (Full Duplex)
TxD+ = Transmit data, positive polarity RxD+ = Receive data, positive polarity RxD– = Receive data, negative polarity GND = Signal ground Table 11 RS-485 full duplex pin-out for terminal block ©2010 - 2011 EasySYNC Ltd. Downloaded from Elcodis.com electronic components distributor... -
Page 15: Figure 7 Rs-485 Full Duplex Wiring
ES-R-2x01B-M would be terminated at the receiver at the other end of the bus as shown. Twisted pair wires are required for each signal pair. ES-R-2x01B-M RS-485 Device TxD+ RxD+ TxD- RxD- RxD+ TxD+ TxD- RxD- Figure 7 RS-485 Full Duplex Wiring ©2010 - 2011 EasySYNC Ltd. Downloaded from Elcodis.com electronic components distributor... -
Page 16: Contact Information
Hillsboro, OR 97123-5803 Tel: +1 (503) 547 0909 Fax: +1 (503) 547 0990 E-Mail (Sales) sales@easysync-ltd.com E-Mail (Support) support@easysync-ltd.com E-Mail (General Inquiries) admin@easysync-ltd.com Web Site URL http://easysync-ltd.com Web Shop URL http://easysync-ltd.com ©2010 - 2011 EasySYNC Ltd. Downloaded from Elcodis.com electronic components distributor... -
Page 17: Legal Disclaimer
EasySYNC. Use of EasySYNC devices in life support and/or safety applications is entirely at the user’s risk, and the user agrees to defend, indemnify and hold harmless EasySYNC from any and all damages, claims, suits or expense resulting from such use. This document is subject to change without notice. -
Page 18: Appendix A - List Of Figures And Tables
RS-485 half-duplex pin-out for 5-way terminal block ....... 12 Table 10 RS-485 full duplex pin-out for DB-9 connector ........14 Table 11 RS-485 full duplex pin-out for terminal block ........14 ©2010 - 2011 EasySYNC Ltd. Downloaded from Elcodis.com electronic components distributor... -
Page 19: Appendix B - Revision History
Document Reference No.: ES_000086 ES-R-2x01B-M RS-232 to RS-422/RS-485 Converters Manual Version 1.0 Clearance No.: ES Appendix B - Revision History Version 1.0 First Release August 2011 ©2010 - 2011 EasySYNC Ltd. Downloaded from Elcodis.com electronic components distributor...