Waveshare USB to RS485 Adapter

The Waveshare USB to RS485 Adapter is an industrial-grade converter designed for robust and reliable communication between USB ports and RS485 devices. It is available in two driver versions: the FT232 version and the CH343G version, both supporting automatic hardware direction control, long transmission distances of up to 1.2km (at a low baud rate), and protection features like lightningproof, surge suppression, and ESD protection. These adapters are ideal for industrial applications requiring multi-node communication in point-to-multipoint configurations, supporting up to 32 nodes.

Specifications of Waveshare USB to RS485 Adapter

FT232 Version

• Product Type: Industrial Grade USB to RS485 converter

• Host Port Connector: USB-A

• Device Port Connector: Screw terminal (RS485, A+, B-, GND)

• Baud Rate: 300bps ~ 921600bps

• USB Operating Voltage: 5V

• Protection: 200mA self-recovery fuse, ESD protection

• Transmission Distance: About 1.2km (low rate)

• Transmission Mode: Point-to-multipoints (up to 32 nodes, repeaters recommended for more than 16 nodes)

• Direction Control: Automatic hardware direction control

• RS485 Protection: 600W lightningproof, surge suppression, 15KV ESD protection (onboard 120R balancing resistor)

• LED Indicators:

  • PWR: Red power indicator, lights up when USB is connected and voltage is detected

  • TXD: Red TX indicator, lights up when sending data via USB

  • RXD: Red RX indicator, lights up when receiving data from device ports

• Operating Temperature: -15°C ~ 70°C

• Operating Humidity: 5%RH ~ 95%RH

• Supported Operating Systems: Mac, Linux, Android, WinCE, Windows 11/10/8.1/8/7

CH343G Version

• Product Type: Industrial Grade USB to RS485 converter

• Host Port Connector: USB-A

• Device Port Connector: Screw terminal (RS485, A+, B-, GND)

• Baud Rate: 300bps ~ 3Mbps

• USB Operating Voltage: 5V

• Protection: 200mA self-recovery fuse, ESD protection

• Transmission Distance: About 1.2km (low rate)

• Transmission Mode: Point-to-multipoints (up to 32 nodes, repeaters recommended for more than 16 nodes)

• Direction Control: Automatic hardware direction control

• RS485 Protection: 600W lightningproof, surge suppression, 15KV ESD protection (onboard 120R balancing resistor)

• LED Indicators:

  • PWR: Red power indicator, lights up when USB is connected and voltage is detected

  • TXD: Red TX indicator, lights up when sending data via USB

  • RXD: Red RX indicator, lights up when receiving data from device ports

• Operating Temperature: -15°C ~ 70°C

• Operating Humidity: 5%RH ~ 95%RH

• Supported Operating Systems: Mac, Linux, Android, WinCE, Windows 11/10/8.1/8/7

Manufacturer Links

• Waveshare USB to RS485 Adapter

• Waveshare USB to RS485 Wiki