ZLAN ZLAN9440 User manual

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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

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CopyRight©2008 Shanghai ZLAN Information Technology Co., Ltd. All right reserved
Version Information
The History of the revision to this document:
History
Date
Version
Document ID
Revising content
2014-10-16
Rev.1
ZL DUI 20141016.1.0
Release
Copyright information
Information in this document is subject to change without notice. It is 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 purpose other than for the purchaser’s
personal use, without the express written permission of Shanghai ZLAN information
Technology Co., Ltd.

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

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1. Summary
ZLAN9440 is a 4 ports industrial isolation RS485 hub, can extend 4 channels RS485
sub-ports through 1 channel RS485/232 main port. It can effectively implement reply,
extension and isolation of RS485 network. ZLAN9440 can also be as an active
isolation RS232 to RS485 converter. If you only need 1 channel the model 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 connection interference between
multi-RS485.
ZLAN9440 is active isolation RS485 hub, the product are specially designed for
industrial scene in harsh environment, is especially suitable for situations requiring

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high reliability and safety. The photoelectric isolation function can effectively make
master and sub devices separate from each other, avoid damage from ground
potential difference of master-slave devices and static, lightning, surge to devices,
also can 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 devices in the network.
4) Conversion: also can realize 1 channel RS232 converting to 4 channels RS485.
Figure 2 ZLAN9440 connection diagram

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2. Feature
1) RS485 master port and slave port has 2500V voltage isolation protection.
2) RS485 master port and slave port support 256 slave stations.
3) The back is equipped with guide installation card slot, suitable for guide
installation.
4) 9~24V wide range input.
5) RS485 opposite connection indicator. The CH1~CH4 indicator is always on when
line A and line 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 isolation voltage: 2500V
Static Protection
RS485: 12KV
Operation Mode
half-duplex transparent transmission
Input Voltage
DC 9~30V
Work Temperature
-45℃~+85℃
Environment Humidity
<95%RH
Transmission Medium
normal parallel lines or twisted-pair

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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.

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485A, 485B
RS485 main port
RS232
RS232 main port, can choose 1 between it and RS485 main port
OUT1A, OUT1B
RS485 slave port 1
OUT2A, OUT2B
RS485 slave port 2
OUT3A, OUT3B
RS485 slave port 3
OUT4A, OUT4B
RS485 slave port 4
GND, +9～24V
Power supply terminal input
5. Usage
1) Extension usage: when master RS485 device need connect 4 RS485 slave
stations through star-type, connect master station with 9440 master port, slave
station connect 9440 slave port, it can prevent 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 1200m, the signal will attenuate and the
interference will increase. ZLAN9440 is adopted to extend the communication
distance.
4) Conversion: can realize RS232 converting to RS485, and it’s active converter
with strong compatible. Also has isolation character, prevent the monitoring
computer to be damaged by RS485 strong voltage.
6. After-service

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Shanghai ZLAN Information Technology Co., Ltd.
Address: 12 floor, D building, No. 80 CaoBao road, Xuhui District, Shanghai, China
Phone: [phone]
Fax: [phone]
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