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.
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RFU-IO
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| Model | Frequency | Transmission Distance (LoS) | AntennaProtocol | Cable | |
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| RFU-IO-433 | 433 MHz
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300m | ANT-Base-02Modbus | 3S001-1 | |
| RFU-IO-920 | 920 MHz
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- | 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
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| 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 | - | ||||
