ICP RFU-900 User Manual
RFU-900 (RS-232/RS485 to LoRa Radio Modem) User Manual Version 1.0.0 Page：1
Copyright © 2018 ICP DAS Co., Ltd. All Rights Reserved E-mail: service@icpdas.com
User Manual
Version 1.0.0 Jan. 2018
RFU-900
(RS-232/RS-485 to LoRa Radio Modem)
RFU-900 (RS-232/RS485 to LoRa Radio Modem) User Manual Version 1.0.0 Page：2
Copyright © 2018 ICP DAS Co., Ltd. All Rights Reserved E-mail: service@icpdas.com
Table of Contents
1. Introduction ......................................................................................................................... 4
1.1. Features .......................................................................................................................... 5
1.2. Specification .................................................................................................................... 6
2. Getting Started .................................................................................................................... 7
2.1. LED Indicator .................................................................................................................. 8
2.2. Rotary Switch Setting ...................................................................................................... 8
2.3. DIP Switch Setting .......................................................................................................... 9
3. Software Utility .................................................................................................................. 10
3.1. Install the RFU-900 Utility ............................................................................................. 10
3.2. Setting up the RFU-900 ................................................................................................ 13
Appendix A. Dimensions ......................................................................................................... 18
Appendix B. Revision History ................................................................................................. 19
RFU-900 (RS-232/RS485 to LoRa Radio Modem) User Manual Version 1.0.0 Page：3
Copyright © 2018 ICP DAS Co., Ltd. All Rights Reserved E-mail: service@icpdas.com
Important Information
Warranty
All products manufactured by ICP DAS are under warranty regarding
defective materials for a period of one year, beginning from the date of
delivery to the original purchaser.
Warning
ICP DAS assumes no liability for any damage resulting from the use of this
product.ICP DAS reserves the right to change this manual at any time
without notice. The information furnished by ICP DAS is believed to be
accurate and reliable. However, no responsibility is assumed by ICP DAS
for its use, not for any infringements o f pat ents or other rights o f t hir d par ti e s
resulting from its use.
Copyright
Copyright @ 2018 by ICP DAS Co., Ltd. All rights are reserved.
Trademark
Names are used for identification purpose only and may be registered
trademarks of their respective companies.
Contact us
If you encounter any problems while operating this device, feel free to contact us
via mail at: service@icpdas.com.
RFU-900 (RS-232/RS485 to LoRa Radio Modem) User Manual Version 1.0.0 Page：4
Copyright © 2018 ICP DAS Co., Ltd. All Rights Reserved E-mail: service@icpdas.com
1. Introduction
The RFU-900 is a RS-232/RS-485 to radio d evice designed for rem ot e c om mu ni cat ion operating
in a transparent way and exploiting the physical layer of LoRa (Long Range) transmission
technology.
The RFU-900 provides a maximum line of sight (LOS) transmission distance of 1000 meters (1
km) at an RF bit rate less than 1000 bps. In order to overcome the interference that may be
encountered in harsh environments, the RFU-900 allows the RF transmission bit rate to be
configure d to a minim um of 250 bps, enhancing the capability of the modem to resist noise and
other interference. Additionally, the RF channels and Group IDs are adjustable, which is helpful
to avoid interference encountered when two RFU-900 networks are adjacent. The RF channels
and the Group IDs can be configured in order to distinguish and control the different RFU-900
networks.
RFU-900 (RS-232/RS485 to LoRa Radio Modem) User Manual Version 1.0.0 Page：5
Copyright © 2018 ICP DAS Co., Ltd. All Rights Reserved E-mail: service@icpdas.com
1.1. Features
LoRa (Long Range) transmission technology
Transparent transmiss i on mode
32 RF channels (Frequency band : 864~ 871.5MHz, 915~ 922.5MHz)
7 RF baud rates (10,000 ~ 250 bps)
Wireless line of sight (LOS) transmission range of up to 1500 meters at an RF baud rate
of 1000 bps
Provides baud bates from 1200 to 115200 bps for both the RS-232 and RS-485
interfaces
ESD Protection: Contact +/-4 kV
Is olation: 3000 VDC for DC-to-DC, 2500 Vrms using a photocoupler
DIN-Rail mountable
Operating temperature, -25 °C ~ +75 °C
RFU-900 (RS-232/RS485 to LoRa Radio Modem) User Manual Version 1.0.0 Page：6
Copyright © 2018 ICP DAS Co., Ltd. All Rights Reserved E-mail: service@icpdas.com
1.2. Specification
RF Interface
Radio Frequency 864~ 871.5MHz, 915~ 922.5MHz
(channel: 32, recommend using 868 +/- 4 MHz)
Baud Rate 10000 ~ 250 bps
Transmission Power 15 dBm (Max.)
Antenna 2 dBi Omnidirectional Antenna
Transmission Distance up to 1500 m ( with 1000 baud, in free field conditions )
Group ID 0~255
Protocols Transparent transmit
Temporary Buffer Size 200 bytes
Configuration Dip /Rotary switch or Utility tool
COM Port Interface
RS-232 TxD, RxD and GND
RS-485 D+, DBaud Rate (bps) 1200 ~ 115200
Data Bit 5,6,7,8
Parity Bit NONE, EVEN, ODD
Stop Bit 1,2
Buffer
1024 bytes
LED Indicators
Red/ Green/ Yellow Power / RF TxD / RF RxD Status
EMS Protection
ESD +/- 4 kV Contact
EFT
+/- 1 kV
Surge +/- 1 kV
Power
Required Supply Voltage +10 VDC ~ +30 VDC
Power Consumption 1 W (Max.)
Mechanical
Dimensions (W x L x H) 108 mm x 84 mm x 33 mm ( not include antenna )
Installation DIN-Rail
Environment
Operating Temperature -25 °C ~ +75 °C
Storage Temperature -30 °C ~ +80 °C
Relative Humidity 10 ~ 90% RH, Non-condensing
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