ICP RFU-900 User Manual

RFU-900 (RS-232/RS485 to LoRa Radio Modem) User Manual Version 1.0.0 Page：1

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

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

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

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

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

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

RFU-900 (RS-232/RS485 to LoRa Radio Modem) User Manual Version 1.0.0 Page：7

2. Getting Started

 Appearance

 Pin Assignment

Pin Description

+Vs +10 ~ +30 V

DC

GND Power Ground

D+ RS-485 Logic High

D- RS-485 Logic Low

F.G. Frame Ground

GND RS-232 Ground

TxD RS-232 Transmit Data Pin

RxD RS-232 Received Data Pin

Antenna

Device ID

Removeable Terminal Block

RFU-900 (RS-232/RS485 to LoRa Radio Modem) User Manual Version 1.0.0 Page：8

2.1. LED Indicator

LED Behavior Description

PWR

On +10 ~ +30 V

DC Power On

Off Power Off

RF_Tx

On RF is transmitting data Off R F is no data to t ransmit

RF_Rx

On RF is receiving data Off R F is no data to receive

2.2. Rotary Switch Setting

Switch Name Description

Device

ID

Device ID, 0x01 ~ 0xFE

NOTE:  Each module’s “Device ID”

must be

different from each other.

 0x00 and

0xFF are reserved for

broadcast id used.

RFU-900 (RS-232/RS485 to LoRa Radio Modem) User Manual Version 1.0.0 Page：9

2.3. DIP Switch Setting

Pin Switch Name

Description

■

: ON

□

: OFF

1 ~ 3

COM0 Baud

Rate (bps)

Baud Rate 1 2 3

115200

□ □ □

57600

■ □ □

38400

□ ■ □

19200

■ ■ □

9600

□ □ ■

4800

■ □ ■

2400

□ ■ ■

1200

■ ■ ■

4 ~ 5

COM0 Data

Bit

Data Bit 4 5

8

□ □

7

■ □

6

□ ■

5

■

6 ~ 7

COM0 Parity

Bit

Parity Bit 6 7

NONE

□ □

EVEN

■ □

ODD

□ ■

Reserved

■ ■

8

COM0 Stop

Bit

Parity Bit 8

1

□

2

■

Init / Run Mode

Init Mode:

Be

able to use Utility to

configure via the RS-232 interface.

Run Mode:

Use to transmit data to the RF side via COM 0 interface.

RFU-900 (RS-232/RS485 to LoRa Radio Modem) User Manual Version 1.0.0 Page：10

3. Software Utility

When user s want to change the “Group ID”, “LoRa frequency”, “Module operation mode” of the RFU-900, the RFU-900 Utility tool may be needed.

3.1. Install the RFU-900 Utility

Step 1: Get the RFU-900 Utility

The software is located at:

Usbcd:\napdos\rf_modem\utility\rfu-900\

http://ftp.icpdas.com/pub/cd/usbcd/napdos/rf_modem/utility/rfu-900/

Step 2: Install .NET Framework 3.5 component

The RFU-900 Utility tool requires the “.NET Framework 3.5 components”. If your PC’s environment does not has “.NET Framework 3.5 components”, it will start to install .NET Framework 3.5 components from the web site, after ex ecut ing the “Setup.exe” file.

RFU-900 (RS-232/RS485 to LoRa Radio Modem) User Manual Version 1.0.0 Page：11

Step 3: Install Utility tool

After installing the .Net Framework components, the software will continue to install the Utility tool.

1. Click the “Next” button to continue.

2. Select the installation path of the RFU-900 Utility and click the “Next” button.

RFU-900 (RS-232/RS485 to LoRa Radio Modem) User Manual Version 1.0.0 Page：12

3. Confirm the installation. Click the “Next” button to start the installation

4. Installation complete. Click the “Close” button to exit

RFU-900 (RS-232/RS485 to LoRa Radio Modem) User Manual Version 1.0.0 Page：13

3.2. Setting up the RFU-900

After installing the utility tool, please follow the following steps to set up the

communication between the Utility and the RFU-900.

Step 1: Connect the PC available COM port with the RS-232 por t of the RFU-900

device via CA-0910 cable. Users can find the communication cable (CA-0910) in the product box.

Step 2: Set the RFU-900 ‘Init.’ dip switch to ‘On’ position and reboot the module.

After rebooting, the module’s RF_Tx and RF_Rx led will flash ON/OFF per second.

RFU-900 (RS-232/RS485 to LoRa Radio Modem) User Manual Version 1.0.0 Page：14

Step 3: Execute the RFU-900 Utility tool.

Step 4: Select the necessary PC’s COM Port which connected with the RFU-900

module. And then p ress the ‘Open’ button to connect with module.

Step 5: After successfully connected with the module, all device parameters will

be shown as below picture.

RFU-900 (RS-232/RS485 to LoRa Radio Modem) User Manual Version 1.0.0 Page：15

Step 6: The detail information about module’s parameters are listed in below

table.

Item

Name

Description

1

Firmware Version

 RFU-900 firmware version

2

Device ID

 Device ID, valid range: 0x01 ~ 0xFE.  Set by using rotary switch

Device ID Description 1 ~ 254 (0x01 ~ 0xFE)

Each RFU-900’s “Device ID” must be different from each other in the

same RF frequency. 0x00 and 0xFF

0x00 and 0xFF are reserved for

broadcast id used, don’

t set these

two values.

3

Group ID

 Group ID, valid range: 0 ~ 255 (0x00 ~ 0xFF).

Group ID Description

1 2 3

4

5 6 7

8

9

RFU-900 (RS-232/RS485 to LoRa Radio Modem) User Manual Version 1.0.0 Page：16

0 ~ 254 (0x00 ~ 0 xFE)

The module has same group id

(0x00 ~

0xFE) setting can

communicate with each other 255 (0xFF)

The module has the group id (0xFF)

setting can communicate with other

module which group id setting is

0x00 to 0xFF

4

Module Mode

 End-device or repeater mode

Mode Description End-device  Message can be transmitted

between UART (COM0) and RF side



When receiving a valid LoRa

signal, data will be transmitted to the UART (COM0) side.

Repeater  The UART (COM0) function will be

disabled.



When receiving a valid LoRa

signal, data will be re-transmitted to the RF side

5

COM 0 Setting

Baud Rate:  8 UART baud rates (115200, 57600, 38400, 19200,

9600, 4800, 2400, 1200 bps) Data Bit:  4 UART data bit (5,6,7,8) Parity Bit:  3 UART parity bit (NONE, EVEN, ODD) Stop Bit:  2 UART stop bit (1,2)

6

LoRa Frequency

 32 RF frequencies (864, 864.5, 865, 865.5, 866,

866.5, 867, 867.5,

868, 868.5, 869, 869.5, 870,

870.5, 871, 871.5, 915, 915.5, 916, 916.5, 917,

RFU-900 (RS-232/RS485 to LoRa Radio Modem) User Manual Version 1.0.0 Page：17

917.5, 918, 918.5, 919, 919.5,

920, 920.5, 921,

921.5, 922, 922.5 MHz)

7

LoRa Bit Rate

 7 RF bit rates (10000, 60

00, 3400, 1800, 1000,

500, 250 bps)  The maximum supported RF receive sensitivities

of each baud rate are listed below.

Baud rate (bps)

Max. RF Receive

Sensitivity (dBm)

10000 -120.0

6000 -123.0 3400 -126.0 1800 -129.0 1000 -131.5

500 -134.0 250 -137.0

8

RSSI information

 Enable or disable the COM0 port to add “RSSI

(Received Signal Strength Indicator, positive

number)” and “SNR (Signal-to-noise ratio, 2's

complement)”, 2 bytes RF signal information, at the

beginning of the received LoRa data when

receiving a valid LoRa message.

SNR RSSI SNR byte >= 0 RSSI = -157 + (16/15 * RSSI byte) SNR byte < 0

RSSI = -157 + (RSSI byte + SNR byte * 0.25)

9

RF Output power

 Value 0(0) ~ F(15) are mapping to the RF output

power range of 0 ~ 15 dBm.

Step 7: Press the save button to save all device parameters into module

Step 8: After se tting, switch the RFU-900 “Init.” switch to “Off” position and reboot

the module.

RFU-900 (RS-232/RS485 to LoRa Radio Modem) User Manual Version 1.0.0 Page：18

Appendix A. Dimensions

RFU-900 (RS-232/RS485 to LoRa Radio Modem) User Manual Version 1.0.0 Page：19

Appendix B. Revision History

This chapter provides revision history information to this document.

The table below shows the revision history.

Revision Date Description

1.0.0 Jan. 2018 Initial issue

ICP RFU-900 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual