Isolated Converter

The USB-i485 isolated converter module is a cost-effective way to convert RS485 or RS422 industrial buses to a USB interface. When connected to a PC USB port the USB-i485 module automatically detects and installs as a native COM port which is compatible with any existing serial communication application.
Multiple modules installed when using USB hubs allowing a hassle-free configuration of a multi serial system without any IRQ or DMA configuration.


  • The USB-i485 isolated converter can be configured for four-wire (Full Duplex) RS422 and RS485 or two-wire (Half Duplex) networks. When operating in two-wire RS485 the data transfer control is automatically done by the converter.
  • Two independent and isolated RS485 networks can be supported by one USB-i485 module thus duplicating the possible number of remote devices.
  • Computer interface: USB V1.1 Plug and Play.
  • Operational system virtual serial port driver.
  • Supports Windows 7/Vista/XP/2008Server/2003Server/98/ME/2000/CE, MAC and Linux 2.4.20 or above. 64 bit options for latest operating systems.
  • Field Interfaces: RS485 Half Duplex (dual buses), RS485 Full Duplex or RS422.
  • Jumper selected RS485 / RS422.
  • Automatic flow control for RS485 Half Duplex.
  • 120 Ohms internal resistors termination enabled by jumpers.
  • Transmission rate: from 300 bps to 250 kbps.
  • Half Duplex: 2 x 32 devices.
  • Full Duplex: 32 devices.
  • USB connection: Mini-B connector.
  • Operating environment: 0 to 70°C, 10 to 90% relative humidity, non-condensing