USB to RS422 Converter UC-RS422
USB to RS422 Converter UC-RS422
The UC-RS422 is a high-performance industrial USB Type-C to 4-wire full-duplex RS422 converter. Designed to interface modern PCs and laptops with industrial RS422 field devices, it features high-speed differential transmitters and receivers capable of driving cables up to 1,200 meters. With built-in line termination and \(\pm 15\text{kV}\) ESD protection, it ensures robust communication in noise-heavy industrial automation environments.
Key Features
- Industrial USB to 4-wire full-duplex RS-422 converter
- Reversible USB Type-C host connector
- Simultaneous bidirectional full-duplex differential data transfer
- Bus-powered directly from USB host port (5V DC)
- High-performance FTDI chipset architecture
- Supports standard baud rates from 300 bps to 250 kbps
- Drives up to 256 receiver nodes across a 1,200 m bus
- ±15 kV ESD protection across differential signal terminals
- Independent LED status indicators for Power, TX, and RX
- Compact enclosure with removable terminal block
Ordering Information
| Product Code | Description |
|---|---|
| UC-RS422 | USB to RS422 Converter (Type-C, 4-Wire Full-Duplex, 256 Nodes) |
| SPD-RS485 | Surge Protection Device RS485 |
| UC-RS232-RS422 | RS232 to RS422 Converter |
| UC-RS485 | USB to RS485 Converter |
| UC-ISO-RS485 | USB to Isolated RS485 Converter |
Applications
- Machinery & Robotics Control: High-speed full-duplex command streaming between PC controllers and automated machinery.
- Environmental & Meteorological Sensors: Interfacing long-cable wind sensors, weather stations, and telemetry units.
- CNC & Motion Controller Commissioning: Direct parameter tuning and diagnostic data capture from PC USB ports.
- Factory Automation & DAQ: Collecting continuous serial data streams without half-duplex turn-around latency.
Specifications
| Parameter | Value |
|---|---|
| Mounting Type | Inline / Field Portable |
| Dimensions | 60 mm x 40 mm x 20 mm (L x W x H) |
| Enclosure Material | Industrial ABS Plastic |
| Operating Temperature | 0 °C to +85 °C |
| Storage Temperature | -40 °C to +85 °C |
| Relative Humidity | 5% to 95% RH (non-condensing) |
Electrical Specifications
| Parameter | Specification |
|---|---|
| Power Supply | 5V DC (Bus Powered via USB Type-C) |
| Working Current | 200 mA Max |
| Baud Rate Range | 300 bps to 250 kbps |
| Data Format | 7/8 Data bits, 1/2 Stop bits, None/Even/Odd Parity |
| RS422 Bus Capacity | Up to 256 receiver nodes |
| RS422 Receiver Input Range | \(\pm 12\text{V}\) between A and B max |
| RS422 Transmit Output | Line A pulled up (+5V), Line B pulled down (0V) |
| RS422 Termination | 120 \(\Omega\) built-in between lines |
| USB Connector | USB Type-C Receptacle (USB 2.0 Full Speed) |
Isolation & Protection Specifications
| Parameter | Value | Standard / Notes |
|---|---|---|
| Isolation Barrier | Non-Isolated | Direct high-speed USB-to-RS422 transceiver interface |
| ESD Protection | \(\pm 15\text{kV}\) Air / \(\pm 8\text{kV}\) Contact | IEC 61000-4-2 Human-Body Model & Contact |
| Surge Clamping | 600W TVS | Fast bidirectional clamping diodes on all differential pins |
LED Indications and Diagnostics
| LED | Color | Status | Description |
|---|---|---|---|
| TX | Red | Blinking | Data transmitting from PC to RS422 field device |
| RX | Green | Blinking | Data receiving from RS422 field device into PC |
Mechanical Dimensions
Terminal Details & Port Pinouts
6-Pin Screw Terminal Block
| Pin # | Label | Signal | Connection to Field Device |
|---|---|---|---|
| 1 | 1-RX-B | RS422 Receive B | Connects to Field Device TX-B (TX-) |
| 2 | 2-RX-A | RS422 Receive A | Connects to Field Device TX-A (TX+) |
| 3 | 3-TX-B | RS422 Transmit B | Connects to Field Device RX-B (RX-) |
| 4 | 4-TX-A | RS422 Transmit A | Connects to Field Device RX-A (RX+) |
| 5 | 5-GND | Ground | Common Signal Ground reference |
| 6 | 6-GND | Ground | Common Signal Ground reference |
4-Wire Full-Duplex Connection Diagram
Revision History
| Revision | Date | Description of Change |
|---|---|---|
| Rev 1.0 | 2026-09-19 | Initial datasheet release |
Get the latest version of this datasheet : click here..
Support
Website: www.veawe.io
Email: info@veawe.io