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Summary of Contents for ICP DAS USA RFU-433
- Page 1 RFU-433 User Manual 433 MHz RS-232/RS-485 Wireless Modem Jan. 2024, Version 1.11...
- Page 2 RFU-433 (433 MHz RS-232/RS-485 Wireless Modem) User Manual, Version 1.11 Warrany All products manufactured by ICP DAS are warranted against defective materials for a period of one year from the date of delivery to the original purchaser. Warning ICP DAS assumes no liability for damages consequent to the use of this product.
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Page 3: Table Of Contents
RFU-433 (433 MHz RS-232/RS-485 Wireless Modem) User Manual, Version 1.11 Table of Contents 1. Introduction ..................4 1.1 Features ..................5 1.2 Specification ................6 1.3 Dimensions .................. 8 1.4 Appearance .................. 9 2. Configuration ................11 3. RFU-433 Utility ................14 4. -
Page 4: Introduction
RS-232/RS-485 devices into 433 MHz wireless messages in the ISM band and transmitted then out using transparent mode. The RFU-433 can reach up to 500 meters in a 9600 bps wireless baud rate and in a direct line-of-sight (LOS) environment. In order to overcome the... -
Page 5: Features
RFU-433 (433 MHz RS-232/RS-485 Wireless Modem) User Manual, Version 1.11 1.1 Features ⚫ 433 MHz Radio Frequency ⚫ 16 RF channels with 100 kHz channel spacing ⚫ Provides RF Baud Rates from 650 to 57600 bps ⚫ RF output power default 10 dBm, maximum 19 dBm ⚫... -
Page 6: Specification
RFU-433 (433 MHz RS-232/RS-485 Wireless Modem) User Manual, Version 1.11 1.2 Specification RF Interface Radio Frequency 433.1 MHz ~ 434.6 MHz Channels 0 ~ 15 (default is 4, configured by utility) Baud Rate 650 ~ 57600 bps Transmission Power Default 10 dBm, Max 19 dBm... - Page 7 RFU-433 (433 MHz RS-232/RS-485 Wireless Modem) User Manual, Version 1.11 Isolation Intra-module Isolation 2500 Vrms for photocoupler (COM Port) EMS Protection +/- 4 kV Contact +/- 1 kV Surge +/- 1 kV Power Input Voltage Range +10 V ~ +30 V...
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Page 8: Dimensions
RFU-433 (433 MHz RS-232/RS-485 Wireless Modem) User Manual, Version 1.11 1.3 Dimensions Copyright © 2018 ICP DAS Co., Ltd. All Rights Reserved. Page：8... -
Page 9: Appearance
RFU-433 (433 MHz RS-232/RS-485 Wireless Modem) User Manual, Version 1.11 1.4 Appearance Copyright © 2018 ICP DAS Co., Ltd. All Rights Reserved. Page：9... - Page 10 RFU-433 (433 MHz RS-232/RS-485 Wireless Modem) User Manual, Version 1.11 Terminal Block Description RS-232 F.G. Frame Ground RS-485 Power: +10 ~ +30 V LED Indicator Behavior Description +10 ~ +30 V Power On Power Off RF is transmitting data RF_Tx...
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Page 11: Configuration
RFU-433 (433 MHz RS-232/RS-485 Wireless Modem) User Manual, Version 1.11 2. Configuration The RFU-433 has the following descriptions about the rotary and dip switches in the hardware setting mode: COM Baud Rate Switch Name Number Baud Rate (bps) Number Baud Rate (bps) - Page 12 RFU-433 (433 MHz RS-232/RS-485 Wireless Modem) User Manual, Version 1.11 Group ID Switch Name Switch Group ID Number Group ID * RFU-433 with different Group ID cannot communicate with each other. Copyright © 2018 ICP DAS Co., Ltd. All Rights Reserved. Page：12...
- Page 13 RFU-433 (433 MHz RS-232/RS-485 Wireless Modem) User Manual, Version 1.11 COM Data Format Switch Name Switch Data Format N, 8, 1 O, 8, 1 E, 8, 1 COM Data Format Repeater Mode (1 hub) * The repeater mode can bypass RF message from one side to another. For example, if the repeater received a message "0x01 0x02 0x03 0x04", then the...
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Page 14: Rfu-433 Utility
Close Button: Close COM port. Clear Button: Clears the value in the “Read Configuration” field. Read Setting Button: Read the setting of RFU-433 and display it in the “Read Configuration” field. Copyright © 2018 ICP DAS Co., Ltd. All Rights Reserved. - Page 15 Output Power: The RF output power is from 0x00 ~ 0x7F. Default is 10 dBm and 0x7F is the max (19 dBm). RSSI Data: After enabling this function, RFU-433 will add the RSSI value of the sending side and the RSSI value of the receiving side to the back of the received wireless packet, and then transmit it to RS-232 / RS-485.
- Page 16 For example, if a 20 Bytes data is transmitted at 9600 bps, the transmission time is about 20 ms, so the next time RFU-433 can transmit a wireless packet is after 200 ms, that is, the signal duty ratio is 10%, which is the CE specification for wireless transmission in 433 MHz band.
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Page 17: Application Example
PC controls RS-485 modules 1 ~ 3 through RFU-433. 1 - Multi Transfer PC controls RS-485 modules 1 ~ 3 through a RFU-433 and modules 4 ~ 6 through another RFU-433 Copyright © 2018 ICP DAS Co., Ltd. All Rights Reserved. - Page 18 RFU-433 (433 MHz RS-232/RS-485 Wireless Modem) User Manual, Version 1.11 Repeater Mode PC cannot monitor the thermometer and hygrometer directly because the distance is too far. But the repeater can bypass the RF message one side to another and let PC can monitor the thermometer and hygrometer.
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Page 19: Rssi Data And Signal Strength Description
RFU-433 (433 MHz RS-232/RS-485 Wireless Modem) User Manual, Version 1.11 A. RSSI Data and Signal Strength Description RSSI Data Icon Strength Description Unconnectable or 0 ~ 89 < -85 < 34% invisible The vast majority of 90 ~ 119 -85 ~ -71...
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