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EasySync Ltd 

Unit 1, 2 Seaward Place, Centurion Business Park, Glasgow, G41 1HH, United Kingdom 

Tel.: +44 (0) 141 418 0181    Fax: + 44 (0) 141 418 0110 

E-Mail (Support): 

 
 

Neither the whole nor any part of the information contained in, or the product described in this manual, may be adapted or reproduced 

in any material or electronic form without the prior written consent of the copyright holder. This product and its documentation are 

supplied on an as-is basis and no warranty as to their suitability for any particular purpose is either made or implied. EasySync Ltd will 

not accept any claim for damages howsoever arising as a result of use or failure of this product. Your statutory rights are not affected. 

This product or any variant of it is not intended for use in any medical appliance, device or system in which the failure of the product 

might reasonably be expected to result in personal injury. This document provides preliminary information that may be subject to 

change without notice. No freedom to use patents or other intellectual property rights is implied by the publication of this document. 

EasySync Ltd, Unit 1, 2 Seaward Place, Centurion Business Park, Glasgow, G41 1HH,  United Kingdom. Scotland  Registered Number: 

SC224924 

 
 

Copyright © 2008 EasySync Limited 

The ES-R-2001-M and ES-R-2101-M provide a simple method of converting RS232 signals to RS422 

or RS485 differential signals. 
Flexible mounting options allow the ES-R-2001-M and ES-R-2101-M to be used in a variety of 

applications.  Indicator LEDs provide functional status. 
 

 

 
 

 

EasySync Ltd 

ES-R-2x01-M RS232 to RS422 / RS485 

Converter 

User Guide 

 

Document Reference No.: ES_000011  

Version draft 

Issue Date: 2009-04-10 

 

 

Preliminary

Содержание ES-R-2 01-M Series

Страница 1: ...variant of it is not intended for use in any medical appliance device or system in which the failure of the product might reasonably be expected to result in personal injury This document provides preliminary information that may be subject to change without notice No freedom to use patents or other intellectual property rights is implied by the publication of this document EasySync Ltd Unit 1 2 S...

Страница 2: ...Interface Configuration 9 2 1 6 DC IN Connector 10 2 2 Mounting 11 3 Connections 12 3 1 RS422 Signal Wiring 12 3 1 1 RS422 Four wire full duplex 12 3 1 2 RS422 Four wire full duplex with handshaking 12 3 2 RS485 Signal Wiring 13 3 2 1 RS485 Two wire half duplex 13 3 2 2 RS485 Four wire full duplex 13 4 Electrical details 14 4 1 Input Power 14 5 Mechanical Details 15 5 1 Module Mechanical Dimension...

Страница 3: ...2x01 M RS232 to RS422 RS485 Converter User Guide Version draft Clearance No ES 2009 EasySync Ltd 3 Technical Support 19 8 Contact Information 20 Appendix A List of Figures and Tables 21 Appendix B Revision History 22 P r e l i m i n a r y ...

Страница 4: ...esistors can also be configured The RS232 interface on the ES R 2x01 M can be configured to be a DCE or a DTE type The default link settings select a DCE type which allows use of a straight through DE 9S to DE 9P cable 1 2 LED Description The ES R 2x01 M uses three LEDs to indicate power and data activity The table below defines the LED functions LED Colour Function Description Yellow Power Power ...

Страница 5: ...n draft Clearance No ES 2009 EasySync Ltd 5 1 5 Ordering Information Part Number Description ES R 2001 M RS232 to RS422 RS485 Asynchronous Serial Converter ES R 2101 M RS232 to RS422 RS485 Asynchronous Serial Converter with Optical Isolation Table 1 3 Ordering Information P r e l i m i n a r y ...

Страница 6: ...TX enable OFF OFF ON RS485 Half Duplex with echo back Two wire mode OFF OFF OFF RS485 Half Duplex no echo Two wire mode Table 2 1 Communications Mode Selection Switch 2 1 2 Internal Jumpers There are four sets of internal jumpers within the ES R 2x01 M that can be accessed by removing the two screws from the side of the unit and removing the top cover The following figure shows the location of the...

Страница 7: ...D A Not used in two wire mode 5 GND C 6 RTS A Output RS422 handshake 7 RTS B Output RS422 handshake 8 CTS B Input RS422 handshake 9 CTS A Input RS422 handshake Table 2 2 RS422 RS485 DE 9P Pin Out The screw terminal block provides access to the first five signals on the RS422 485 connector Pin Name Comments 1 TxD A 2 TxD B 3 RxD B Not used in two wire mode 4 RxD A Not used in two wire mode 5 GND C ...

Страница 8: ...if it is required In a RS485 two wire interface termination may be required on both ends of the link as each end has a receiver and is activated by fitting a link between JP1 pins 1 and 2 In a RS485 four wire interface termination may be required on the receiver and is activated by fitting a link between JP1 pins 7 and 8 No link would be fitted across JP1 pins 1 and 2 Bias resistors may be necessa...

Страница 9: ...rections DE 9S Pin Name Comment 1 DCD Linked to pin 4 and pin 6 2 Rx Out An output pin for DCE type RS232 interface 3 Tx In An input pin for DCE type RS232 interface 4 DTR Linked to pin 1 and pin 6 5 GND GND 6 DSR Linked to pin 1 and pin 4 7 RTS In An input pin for DCE type RS232 interface 8 CTS Out An output pin for DCE type RS232 interface 9 No connection Shield Shield No connection Table 2 6 RS...

Страница 10: ... pin for DTE type RS232 interface 9 No connection Shield Shield No connection Table 2 8 RS232 DE 9S DTE Pin Out To select the DTE configuration fit links between the following pins on JP5 and JP6 JP5 DTE Selection Link pins 3 5 Link pins 4 6 JP6 DTE Selection Link pins 3 5 Link pins 4 6 Table 2 9 JP5 JP6 DTE DCE Configuration Jumper Set for DTE 2 1 6 DC IN Connector The ES R 2x01 M is supplied wit...

Страница 11: ...arance No ES 2009 EasySync Ltd 11 2 2 Mounting The ES R 2x01 M is supplied with rubber feet for desktop use In addition the case has integrated mounting flanges that can be used for securing to a flat surface The flange holes are spaced to attach to an optional DIN rail bracket clip P r e l i m i n a r y ...

Страница 12: ...ection RS422 Device 1 TxD A RxD A 2 TxD B RxD B 3 RxD B TxD B 4 RxD A TxD A 5 GND C GND C Table 3 1 RS422 Wiring Full Duplex Without Handshake 3 1 2 RS422 Four wire full duplex with handshaking ES R 2x01 M Direction RS422 Device 1 TxD A RxD A 2 TxD B RxD B 3 RxD B TxD B 4 RxD A TxD A 5 GND C GND C 6 RTS A CTS A 7 RTS B CTS B 8 CTS B RTS B 9 CTS A RTS A Table 3 2 RS422 Wiring Full Duplex With Hands...

Страница 13: ...ction RS485 Device s1 1 TxD A Data A 2 TxD B Data B 5 GND C GND C Table 3 3 RS485 Wiring Half Duplex 3 2 2 RS485 Four wire full duplex ES R 2x01 M Direction RS485 Device s2 1 TxD A RxD A 2 TxD B RxD B 3 RxD B TxD B 4 RxD A TxD A 5 GND C GND C Table 3 4 RS485 Wiring Full Duplex 1 Can be multiple RS485 devices sharing the same wiring 2 Can be multiple RS485 devices sharing the same wiring P r e l i ...

Страница 14: ...e Version draft Clearance No ES 2009 EasySync Ltd 14 4 Electrical details 4 1 Input Power Parameter Description Minimum Typical Maximum Units Conditions DC IN Input Power Voltage 4 75 5 0 5 25 V Icc Input current TBD TBD mA Table 4 1 Input Power Electrical Details P r e l i m i n a r y ...

Страница 15: ...0011 ES R 2x01 M RS232 to RS422 RS485 Converter User Guide Version draft Clearance No ES 2009 EasySync Ltd 15 5 Mechanical Details 5 1 Module Mechanical Dimensions TBD Figure 5 1 ES R 2x01 M Case Dimensions P r e l i m i n a r y ...

Страница 16: ...onment Details 6 1 Storage Parameter Description Minimum Typical Maximum Units Conditions T Storage Temperature Range TBD TBD o C Table 6 1 Storage Temperature 6 2 Operating Parameter Description Minimum Typical Maximum Units Conditions T Operating Temperature Range 0 60 o C 5 to 95 RH non condensing Table 6 2 Operating Temperature P r e l i m i n a r y ...

Страница 17: ...tions However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Increase the sepa...

Страница 18: ...Sync Ltd 18 7 4 1 MTTF The Mean Time To Failure is TBD 7 5 Import Export Information Import Export Information Country of Origin China Harmonized Code 8471 80 1000 Product Description RS232 to RS422 RS485 Computer Adapter Single Port USA ECCN EAR99 No License Required Table 7 1 Import Export Information P r e l i m i n a r y ...

Страница 19: ...S485 Converter User Guide Version draft Clearance No ES 2009 EasySync Ltd 19 Technical Support Technical support may be obtained from your nearest EasySync office United Kingdom support easysync co uk United States support easysync ltd com P r e l i m i n a r y ...

Страница 20: ...s easysync co uk E mail Support support easysync co uk E mail General Enquiries admin easysync co uk Web Site URL http easysync co uk Web Shop URL http easysync co uk Branch Office Hillsboro Oregon USA EasySync Limited USA 7235 NW Evergreen Parkway Suite 600 Hillsboro OR 97123 5803 USA Tel 1 503 547 0909 Fax 1 503 547 0990 E Mail Sales sales easysync ltd com E Mail Support support easysync ltd com...

Страница 21: ...Terminal Pin Out 7 Table 2 4 JP1 Termination and Bias Configuration Jumper 8 Table 2 5 JP2 RS422 RS485 Slew Rate Configuration Jumper 8 Table 2 6 RS232 DE 9S DCE Pin Out Default 9 Table 2 7 JP5 JP6 DTE DCE Configuration Jumper Set for DCE 9 Table 2 8 RS232 DE 9S DTE Pin Out 10 Table 2 9 JP5 JP6 DTE DCE Configuration Jumper Set for DTE 10 Table 3 1 RS422 Wiring Full Duplex Without Handshake 12 Tabl...

Страница 22: ...erence No ES_000011 ES R 2x01 M RS232 to RS422 RS485 Converter User Guide Version draft Clearance No ES 2009 EasySync Ltd 22 Appendix B Revision History Version 1 0 Initial Release April 2009 P r e l i m i n a r y ...

Страница 23: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information EasySync ES R 2001 M ...

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