Novus Isolated Converter USB-i485

  • Part #:NV-8816001039
  • Availability: In Stock

Price: $121.00
Price: $169.40


The USB-i485 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 is automatically detected and is installed as a native COM port which is compatible with any existing serial communication application. Multiple modules can be installed when using USB hubs thus allowing a hassle-free configuration of a multi serial  system without any IRQ or DMA configuration. 1500 Vdc isolation between the USB port and RS485/RS422 protects the PC from spikes or possible misconnections in the communication bus. The USB-i485 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.

Features & Specifications:

  • 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  
  • MaximumRS485/RS422 cable length: 1200 m  
  • Maximum number of devices in the RS485 network   
    • Half Duplex: 2 x 32 devices      
    • Full Duplex: 32 devices  
  • Data transmission and reception LED indicators  
  • Power: from the USB port  
  • Consumption: <100 mA  
  • Isolation: 1500 Vdc from USB interface and the RS485/RS422 interface  
  • RS485/422 bus protection: ±60 Vdc, 15 kV ESD  
  • USB connection: Mini-B connector  
  • A 1.5 m cable with plugs mini-B and A is provided with the module  
  • RS485/422 connector: screw terminal type accepting 1.5 mm² (16 AWG) wires  
  • Operating environment: 0 to 70°C, 10 to 90% relative humidity, non-condensing