Manual - Decision
Contents
1. The features of the RS232 to RS485 RS422 box are e EIA RS232 to EIA RS485 RS422 isolator input and output e Heavy duty optical couplers and a transformer isolated DC to DC converter to provide significantly higher electrical isolation 5000V DC surge 1 minute 5000V rms continuous e Support Tx Rx RTS CTS SG signals for RS232 Tx Tx Rx Rx SG signals for RS422 and TRD TRD SG signals for RS485 e Communication speeds up to 230 K bps e Transmit distance up to 4000ft e Three LED indicators correspond to Tx green Rx yellow and power red signals e 250mA 9 VDC power input e Life expectancy for relay 100 million operations at signal level load e Allow the photo input signals to be completely floated and prevent the ground loops e Operating temperature from OC to 70C ee NAAN DECISION Computer International 1 EERE ERE ERE REE EEEE EERE EERE EE yy M M Operations Manual RS232 to RS485 RS422 isolator box CHAPTER 2 UNPACKING INFORMATION Check that your RS232 to RS485 RS422 package includes the following items e RS232 to RS485 RS422 box e User manual e Warranty form ee ee ANAN 2 DECISION Computer International LULU LEA LALALALA LEA AA ERE S E GG UG OP PP BG PB GG Operations Manual RS232 to RS485 RS422 isolator box Operations Manual RS232 to RS485 RS422 isolator box CHAPTER 3 HARDWARE CONFIGURATION The on boards jumpers can be used to set RS2. 422 RS485 mode and select delay transmit time Copy Faghr bay DETT DN COMPUTER 20H JP1 Jumper DJ PRIS TO 422493 Mko Select delay transmit time JP2 Jumper 2 Select auto flow control P3 Jumper 3 Select RS422 or RS485mode The RS232 to RS485 RS422 box is shown in the following DECISION Computer International Ltd ee ee ee ee ANAN DECISION Computer International 3 4 DECISION Computer International SE ER ERE EEE EEE EERE EEE ERE REESE EES Operations Manual RS232 to RS485 RS422 isolator box DECISION Computer International Ltd ee ee ee DECISION Computer International RE REE REESE EERE ERE aa Operations Manual RS232 to RS485 RS422 isolator box 1 Select RS422 or RS485 Mode JP3 1 HE The JP1 is used to select RS422 or RS485 for port 2 To short pin means select RS485 mode Jumper Mode Short RS485 Open RS422 2 Select Auto Flow Control JP2 The JP2 is used to select auto flow control To short 2 3 means auto flow control user only need to send data from Tx signal the hardware will control RTS signal automatically To short 1 2 means select RTS flow control while user need to send data it needs to set RTS to 1 to enter driver mode then send message or data After sending message it needs to set the signal to 0 to enter receive mode again The auto flow control is work for RS485 mode ka Pal mk Enable by RTS Receive always
3. SE AGA Ga Gaan aaa naa EERE REE naaa BE REE REE ERE EERE EERE EERE RRR ERE EES Operations Manual RS232 to RS485 RS422 isolator box Operations Manual RS232 to RS485 RS422 isolator box A Warranty Information 11 RS232 TO RS485 RS422 BOX Non Radioactive Surge Arrester OPERATION MANUAL DECISION Computer International Co Ltd TABLE OF CONTENTS C CHAPTERS EA Yaa lai AA AA AANO 1 2 Unpacking Information 2 3 Hardware Configuration 3 4 Signal Assignments and Cabling 8 APPENDICES an a nna a n aa n naa AA KA ARA RN RANA NANA NRA RARE KAKANAN KAKA NANANA an a n na a n AN KA AA RA NA ARA RN RA RA BANANA ARA NANANA NAN KAKA KANA NA DECISION Computer International i ii DECISION Computer International LULU LEA LALALALA LEA AA ERE S Operations Manual RS232 to RS485 RS422 isolator box CHAPTER 1 INTRODUCTION The RS232 to RS485 RS422 box provides bi direction RS232 signals to RS485 RS422 signals conversion features which are used to expand long haul distance communication for RS422 and multi drop RS485 communication The RS232 to RS485 RS422 box allows the input signals to be completely prevent up to 5000Vrms which offers customers a unique combination of protection speed and versatility for industrial data communications applications There are 3 LED indicators correspond to Tx Rx and power signals
4. enable Short 1 2 Short 2 3 ee ANAN 6 DECISION Computer International E LULU LEA LALALALA LAAL Operations Manual RS232 to RS485 RS422 isolator box 3 Select Delay Transmit Time The JP1 is used to select delay transmit time To short the pin 1 and pin 2 means delay 4 6ms transmit time and short the pin 2 and pin 3 means delay 40ms transmit time Jumper Delay Time Short pin 1 2 4 6ms Short pin 2 3 40ms ee ee NAAN DECISION Computer International 7 Operations Manual RS232 to RS485 RS422 isolator box CHAPTER 4 Signal Assignments and Cabling 1 DB25 Female Connector for RS232 DB25 RS 232C Signal Pin Signal Name Name Direction 1 Chassis Ground GND AA Common 2 Transmit Data TxD BA Output 3 Receive Data RxD BB Input 4 Request to Send RTS CA Output 5 Clear to Send CTS CB Input 7 Signal Ground SG AB Common 2 DB25 Male Connector for RS422 Pin Description 1 Chassis Ground 2 Transmit Data TxD 3 Receive Data RxD 6 Receive Data RxD 7 Signal Ground SG 20 Transmit Data TxD ee ee 8 DECISION Computer International SE ERE LALALALA LALA AA EES Operations Manual RS232 to RS485 RS422 isolator box The applications of RS232 to RS422 conversion are shown in the following a Connect to RS422 Device RS232 to RS485 RS422 box Device b For Long Haul Distance Comm
5. lication and distribution of specific number of copies within the licensed institution Duplication of multiple copies is not allowed except through execution of a licensing agreement Welcome call for details A 2 Warranty Information DECISION warrants that for a period of one year from the date of purchase unless otherwise specified in the warranty card that the goods supplied will perform according to the specifications defined in the user manual Furthermore that the RS232 to RS485 RS422 box product will be supplied free from defects in materials and workmanship and be fully functional under normal usage ee ANNA NG DECISION Computer International 11 Operations Manual RS232 to RS485 RS422 isolator box In the event of the failure of an RS232 to RS485 RS422 box product within the specified warranty period DECISION will at its option replace or repair the item at no additional charge This limited warranty does not cover damage resulting from incorrect use electrical interference accident or modification of the product All goods returned for warranty repair must have the serial number intact Goods without serial numbers attached will not be covered by the warranty Transportation costs for goods returned must be paid by the purchaser Repaired goods will be dispatched at the expense of RS232 to RS232 box To ensure that your RS232 to RS485 RS422 box product is covered by the warranty provisions it is necessary that you retu
6. rn the Warranty Card Under this Limited Warranty DECISION s obligations will be limited to repair or replacement only of goods found to be defective as specified above during the warranty period DECISION is not liable to the purchaser for any damages or losses of any kind through the use of or inability to use the RS232 to RS485 RS422 box product DECISION reserves the right to determine what constitutes warranty repair or replacement Return Authorization It is necessary that any returned goods are clearly marked with an RA number that has been issued by DECISION Goods returned without this authorization will not be attended to ee ee 12 DECISION Computer International
7. unication RS232 to RS485 RS422 box RS232 to RS485 RS422 box DECISION Computer International 9 E GG UU AA AQ PB BP PG GG Operations Manual RS232 to RS485 RS422 isolator box 3 DB25 Male Connector for RS485 Pin Description 1 Chassis Ground 2 Transmit Data Receive Data TRD 20 Transmit Data Receive Data TRD 7 Signal Ground The applications of RS232 to RS485 conversion are shown in the following a Connect to RS485 Device RS232 to RS485 RS422 box Device b For Long Haul Distance Communication RS232 to RS485 RS422 box RS232 to RS485 RS422 box 10 DECISION Computer International Operations Manual RS232 to RS485 RS422 isolator box APPENDIX A WARRANTY INFORMATION A 1 Copyright Copyright 2004 2005 DECISION COMPUTER INTERNATIONAL CO LTD All rights reserved No part of RS232 to RS485 RS422 box may be reproduced transmitted transcribed or translated into any language or computer language in any form or by any means electronic mechanical magnetic optical chemical manual or otherwise without the prior written permission of DECISION COMPUTER INTERNATIONAL CO LTD Each piece of RS232 to RS485 RS422 box package permits user to use only on a single computer a registered user may use the program on a different computer but may not use the program on more than one computer at the same time Corporate licensing agreements allow dup
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