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ZLAN9440   

RS485 HUB 

User Manual

 

1 channel RS232/485 to 4 channels 

RS485 

 

 

 

 

CopyRight©2008 Shanghai ZLAN Information Technology Co., Ltd. All right 

reserved 

Document DI: ZL DUI 20141016.1.0 

Содержание ZLAN9440

Страница 1: ...1 ZLAN9440 RS485 HUB User Manual 1 channel RS232 485 to 4 channels RS485 CopyRight 2008 Shanghai ZLAN Information Technology Co Ltd All right reserved Document DI ZL DUI 20141016 1 0 ...

Страница 2: ... against the law to copy the document on any medium except as specifically allowed in the license or nondisclosure agreement The purchaser may make one copy of the document for backup purposes No part of this manual may be reproduced or transmitted in any form or by any means electronic or mechanical including photocopying recording or through information storage and retrieval systems for any purp...

Страница 3: ...3 Content 1 Summary 4 2 Feature 6 3 Technical parameter 6 4 Hardware 7 5 Usage 8 6 After service 8 ...

Страница 4: ...l is ZLAN9410 Figure 1 ZLAN9440 appearance The main port of ZLAN9440 provides isolation two interface RS485 and RS232 at the same time the sub ports extend 4 channels isolation RS485 interface Generally the RS485 wiring require hand in hand wiring style need avoid star connection of master station as center But sometimes need star connection in this case using RS485 hub can effectively isolate con...

Страница 5: ...an avoid damage from ground loop current caused by ground potential difference ZLAN9440 has 4 main application styles 1 Isolation effectively isolate master and slave ends of RS485 network meanwhile isolate 4 slave stations 2 Relay can effectively extend communication distance of RS485 network 3 Extension can implement 1 channel RS485 extending to 4 channels RS485 multiply the numbers of RS485 dev...

Страница 6: ...ine B are opposite connected 3 Technical parameter Interface Standard meet EIA TIA RS232 RS485 standard Physical Interface RS232 DB9 hole RS485 Terminal Serial Port Type RS485 two line A B RS232 three line TXD RXD GND Communication Rate 0 200Kbs self adaptive Support Qty each RS485 port support up to 256 node Communication Distance 1200m 9600bps higher rate shorter distance Isolation Voltage RS485...

Страница 7: ...mcu com 7 Size L W H 12 2cm 7 2cm 3 4cm 4 Hardware Figure 3 9440 Interface Diagram The front view of ZLAN9440 is shown as figure 3 the interface instructions are as below Name Instruction EARTH Shell grounding for RS485 lightning and big current drainage can be non connected ...

Страница 8: ...event interference between RS485 as effectively isolation 2 Isolation connect one end of RS485 wire to the RS485 master port the other end connect to any of the RS485 slave ports so the RS485 wire is isolated effectively can be lightning protection and anti interference Effectively protect the RS485 device in other end from damage by big voltage and strong current 3 Relay when RS485 wire exceeds 1...

Страница 9: ...d Tel 86 17321037177 http www zlmcu com 9 Shanghai ZLAN Information Technology Co Ltd Address 12 floor D building No 80 CaoBao road Xuhui District Shanghai China Phone 021 64325189 Fax 021 64325200 Web http www zlmcu com Email support zlmcu com ...

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