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USB to RS485 (C) Industrial Isolated Converter
The USB to RS485 (C) from Waveshare is a high-performance, industrial-grade converter designed to provide reliable and stable communication between USB devices and RS485 networks. Powered by the original FT232RNL chip, it ensures excellent compatibility and consistent data transmission, even in demanding industrial environments.
Built with an isolated transceiver and advanced protection circuits, this converter offers enhanced resistance to electrical noise, surge voltage, and electrostatic discharge. It is ideal for applications such as industrial automation, PLC communication, Modbus networks, data acquisition systems, and long-distance serial communication.
Key Features
- Industrial-grade design for reliable operation in harsh environments
- USB to RS485 bidirectional conversion with automatic data direction control [docs.waveshare.com]
- FT232RNL communication chip for stable, high-speed, and compatible performance [waveshare.com]
- Integrated isolation and ESD protection, improving noise immunity and safety [docs.waveshare.com]
- Onboard TVS protection to suppress surge voltage and transient spikes
- Multiple protection circuits including resettable fuse and protection diodes for over-voltage and over-current protection [waveshare.com]
- Up to 1.2 km RS485 transmission distance (at low baud rates), ideal for long-range communication [docs.waveshare.com]
- LED indicators (PWR, TXD, RXD) for real-time monitoring of power and data activity [docs.waveshare.com]
Performance & Compatibility
The converter supports a wide range of operating systems including Windows, Linux, Mac, and Android, making it flexible for different platforms and development environments.
With a baud rate from 300 bps up to 512 kbps, it delivers reliable communication for various industrial protocols and applications. [docs.waveshare.com]
[docs.waveshare.com]
Robust Protection & Isolation
Designed for reliability, the device features:
- Up to 2.5 kV isolation voltage
- 15 kV ESD protection and 600 W surge protection
- Improved resistance to ground loops, interference, and incorrect wiring [docs.waveshare.com]
In summary, the Waveshare USB to RS485 (C) converter is a compact, durable, and highly reliable solution for industrial communication systems requiring long-distance, stable, and protected RS485 connectivity.
USB to RS485 (C) Industrial Grade Isolated Bidirectional Converter, Features the FT232RNL chip, Onboard isolated transceiver and TVS, Up to 1.2km RS485 transmission distance
USB TO RS485 (C)
Isolated Bidirectional Converter
Industrial Grade Isolated USB to RS485 bidirectional converter with original FT232RNL chip. Supports stable communication, it is suitable for industrial control equipments or applications with high communication requirements.
Features At A Glance
- Supports USB to RS485 bidirectional conversion
- Onboard original FT232RNL chip, enabling high-speed, stable, and reliable communication with excellent compatibility
- Onboard isolated transceiver, integrated electrical isolation and ESD protection, effectively improving communication stability and anti-interference capabilities in industrial environments
- Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, lightningproof & anti-electrostatic
- Onboard resettable fuses and protection diodes, ensures the stable current/voltage outputs, provides over-current/over-voltage protection, improves shock proof performance
- Onboard 3 LEDs for indicating the power and transceiver status
Specifications
| PRODUCT TYPE | Industrial grade isolated USB to RS485 converter | |
|---|---|---|
| Baud rate | FT232RNL chip | 300bps ~ 512000bps |
| Host port | USB | |
| Device port | RS485 | |
| USB | Operating voltage | 5V |
| Connector | USB-A | |
| Protection | 200mA resettable fuses, ESD protection | |
| Transmission distance | Approx. 5m | |
| RS485 | Connector | Screw terminal |
| Pins | A+, B-, GND | |
| Direction control | Hardware automatic control | |
| Protection | 600W Lightningproof, anti-surge, and 15KV ESD protection (onboard 120R balancing resistor) | |
| Isolation voltage | Up to 2.5KV opto-isolation | |
| Transmission distance | Approx. 1.2km (low rate) | |
| Transmission mode | Point-to-multipoints (up to 32 nodes, it is recommended to use repeaters for 16 nodes or more) | |
| LED indicators | PWR | Red power indicator, lights up when there is USB connection and voltage is detected |
| TXD | Red TX indicator, lights up when the USB port sends data | |
| RXD | Red RX indicator, lights up when the device port sends data back | |
| Operating environment | Temperature | -40℃ ~ 85℃ |
| Humidity | 5%RH ~ 95%RH | |
| Operating system | Mac, Linux, Android, WinCE, Windows 11 / 10 / 8.1 / 8 / 7 / XP | |
Onboard Original Chip
Onboard original FT232RNL chip, providing better stability and compatibility,
built-in Lightningproof tube, resettable fuses, ESD and TVS protection circuits, etc.
Transmission distance up to 1.2km
The USB signal can be converted into a balanced differential RS485 signal and the transmission rate is stable. The reliable speed is 300bps ~ 512000bps, the transmission distance is about 1.2km for RS485, and about 5 meters for USB
Multi-system Support
Supports Mac, Linux, Android, WinCE, Windows 11 / 10 / 8.1 / 8 / 7 / XP, etc.
Working Status Indicators
Onboard 3 LEDs for indicating power and transceiver status
Outline dimensions
Resources & Services
WIKI: docs.waveshare.com/USB_TO_RS485_C
Shipping list
Weight: 0.069 kg
- USB TO RS485 (C) x1
- USB Type-A male port to Type-A female port cable ~1.2m x1
- Screwdriver x1
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