RFU-IO Introduction

RFU-IO is a RF wireless I/O unit that uses the Modbus communication protocol. It can be equipped with an ICPDAS XV series I/O module. A remote Modbus master can use a wireless converter to convert Modbus commands into RF signals to control the I/O module on the RFU-IO, thereby implementing a wireless I/O solution.

In the I/O section, the RFU-IO supports ICP DAS’s XV I/O boards, including analog current and voltage input/output, digital signal input/output, TC/RTD temperature measurement, pulse counting, and more. These various I/O signal types can accommodate different application needs in the field. Depending on the model, it also supports DI/DO or AI/AO pair-connection functionality.
 
RFU-IO
Model Frequency Transmission Distance (LoS) AntennaProtocol Cable
RFU-IO-433 433 MHz
 
300m ANT-Base-02Modbus 3S001-1
RFU-IO-920 920 MHz
 
- ANT-Base-02Modbus 3S001-1
 
 

Product Features

Wireless Communication Capability

  • Utilizes 433 / 920 MHz RF wireless frequency bands, supporting the Modbus RTU communication protocol.
  • Multi-channel wireless configuration with a wide selectable frequency range.
  • Supports various wireless communication rates, adjustable based on user requirements.
  • Provides RSSI (Received Signal Strength Indicator) functionality for monitoring wireless communication quality.
  • Maximum transmission range in open areas: RFU-IO-433: 300 meters (with 9600 bps and 10 dBm output power).
  •  

Flexible I/O Expansion Design

  • Supports XV series I/O expansion boards, allowing users to select and install a single I/O module based on application requirements.
  • Compatible with I/O Pair-connection mode for point-to-point or one-to-many I/O transmission.
 

Versatile Operating Modes

  • Offers a repeater mode (1-hop transmission) to address communication distance or blind spot issues.
  • Features easy configuration through rotary switches and DIP switches, simplifying system maintenance and device replacement.
  • Supports group ID and multi-channel configuration to avoid network interference.
  •  

Hardware and Environmental Adaptability

  • Equipped with electrostatic protection (+/-4 kV) to meet industrial environment requirements.
  • Supports a wide operating temperature range (-25°C to +75°C).
  • Designed for DIN-rail installation, enabling quick and convenient deployment.
 

RFU-IO-433 + XV Board

 
 
Model Normal Mode Pair-connection
DIO Expansion
XV107 O O
XV107A O O
XV110 O O
XV111 O O
XV111A O O
XV161-SL O O
Relay Output Expansion
XV116 O O
XV119 O O
Multi-Function Expansion
XV303 O O
XV305 O O
XV306 O O
XV307 O O
XV308 O -
XV310 O O
XV315 O -
Encoder/Frequency/Counter Input
XV484 O -
PWM Output Expansion
XV488 O -