Description

Description

The USB-i485 module is a cost-effective way to add an industrial RS485 or RS422 serial port to your PC using a standard USB port. When connected to a PC USB port the USB-i485 module is automatically detected and installed as a native COM port compatible with ANY existing serial communication application. 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 handled automatically (autogating) by the converter.

Two independent and isolated RS485 networks can be supported by one USB-i485 module thus doubling the number of remote devices that can be connected. Multiple modules can also be installed when using powered USB hubs, thus allowing a hassle-free configuration of a multi serial system without any IRQ or DMA configuration. 1500vDC isolation between the USB port and RS485/RS422 protects the PC from spikes and other possible transient voltages on the communication bus.

Software and USB connection lead included.

Specifications

  • Computer interface: USB V1.1 plug and play
  • Operating system virtual serial port driver
  • Supports Windows 98/ME/XP/2000/CE, MAC & Linux 2.4.20 or higher
  • Field interfaces: RS485 half duplex (dual buses), RS485 full duplex or RS422
  • RS485/RS422 selected on terminals
  • Automatic flow control (autogating) for RS485 half duplex
  • 120 Ohms internal resistor termination available
  • Transmission rate: from 300 bps to 1Mbps
  • Maximum RS485/RS422 cable length : 1200m
  • Maximum number of devices on the RS485 network:
    • Half duplex: 2 x 32 devices
    • Full duplex: 32 devices
  • Data Transmit and Receive LED indicators
  • Powered by the USB port
  • Consumption: <100mA
  • Isolation: 1500 Vdc from USB interface and the RS485/RS422 interface
  • RS485/422 bus protection: ±60vDC, 15 kV ESD
  • USB connection: mini-B connector
  • A suitable 1.5 m USB cable (type mini-B to A) is supplied with the module
  • RS485/422 connector: plug in screw terminal type accepting 1.5 mm² (16 AWG) wires
  • ABS enclosure: 70 x 60 x 18 mm
  • Operating environment: 0 to 70°C, 10 to 90% relative humidity, non-condensing