RS232 to RS422 Converter UC-RS232-RS422
RS232 to RS422 Converter UC-RS232-RS422
The UC-RS232-RS422 is a compact, industrial-grade RS232 to RS422 converter designed for 4-wire full-duplex serial data communication. It extends standard point-to-point RS232 communication distances up to 1,200 meters (4,000 feet) while providing high-noise immunity differential signaling, built-in line termination, and \(\pm 15\text{kV}\) ESD protection.
Key Features
- Converts short-range RS-232 to 4-wire full-duplex RS-422
- Extends communication distance up to 1,200 m (4,000 ft)
- Simultaneous bidirectional full-duplex differential data streaming
- Supports standard baud rates from 300 bps to 250 kbps
- Drives up to 256 receiver nodes along an RS-422 bus segment
- ±15 kV ESD protection across all signal lines
- Independent LED status indicators for TX and RX activity
- 9V to 30V DC industrial power supply input (nominal 24V DC)
- 35 mm DIN rail and wall mountable housing
- Dimensions: 110 mm × 50 mm × 55 mm
Ordering Information
| Product Code | Description |
|---|---|
| UC-RS232-RS422 | RS232 to RS422 Converter (4-Wire Full-Duplex, 6~24V DC) |
| SPD-RS485 | Surge Protection Device RS485 |
| UC-RS232-RS485 | RS232 to RS485 Converter |
| UC-RS422 | USB to RS422 Converter |
| UC-ISO-232-485 | Isolated RS232 to RS485 Converter |
Applications
- Long-Distance Machine Interfacing: Extending PC COM ports to distant CNC tools, manufacturing robotics, and PLCs.
- Full-Duplex Instrumentation: High-speed continuous data streaming from industrial barcode scanners and sensor clusters.
- Factory Floor Communication: Replacing interference-prone single-ended RS232 cables with balanced differential lines.
- Control Panel Building: Compact inline interface easily mounted inside electrical cabinets and equipment raceways.
Specifications
| Parameter | Value |
|---|---|
| Mounting Type | Inline / Panel Mountable |
| 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 | 6V ~ 24V DC (nominal 12V/24V DC) |
| 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 TX Termination | 120 \(\Omega\) built-in between TX-A and TX-B |
| RS232 Connector | Standard DB9 Male as per RS232C standard |
Isolation & Protection Specifications
| Parameter | Value | Standard / Notes |
|---|---|---|
| Isolation Barrier | Non-Isolated | Common ground shared between RS232 and power |
| 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 |
| Reverse Polarity | Integrated | Series protection diode on DC power input |
LED Indications and Diagnostics
| LED | Color | Status | Description |
|---|---|---|---|
| TX | Red | Blinking | RS232 host transmitting data onto RS422 bus |
| RX | Green | Blinking | RS422 field device data received into RS232 host |
Mechanical Dimensions
Terminal Details & Port Pinouts
6-Pin Screw Terminal Block (RS422 & Power)
| Pin # | Terminal Label | Signal | Connection to Machine / Peripheral |
|---|---|---|---|
| 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 | Supply GND | Power Supply Ground (-Vin return) |
| 6 | 6-24V | Supply +Vin | DC Power Supply Positive (+6V to +24V DC) |
RS232 DB9 Male Connector Pinout
| DB9 Pin | Signal | Direction | Connection to Host PC |
|---|---|---|---|
| 2 | 2-RX | Input | Connects to PC TX (Transmit Data) |
| 3 | 3-TX | Output | Connects to PC RX (Receive Data) |
| 5 | 5-GND | Ground | Connects to PC GND (Signal Ground) |
| 1, 4, 6, 7, 8, 9 | NC | – | No internal connection |
Connection Details 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