Installation
Operation &
Specifications
Manual
USB to 2-Wire RS-485 Converter
620-0005 R1.b © Micro
fl
ex 2007-2012
General Description
The 101-0010 USB to RS-485 Converter provides a simple, low cost interface
between a PC or laptop with a USB port, and 2-wire RS-485 devices. Universal
Serial Bus (USB) drivers make this converter compatible with most software
developed for RS-232 serial port interfaces because it appears as an RS-232
port to your software. Switching between receive and transmit is automatically
controlled, RTS (request to send) is not used to control transmit. Power for the
converter is taken from the USB port so no external power supply is required.
A rugged design makes 101-0010 an ideal choice for fi eld engineers and tech-
nicians who service RS-485 2-wire equipment in an industrial environment.
Because the 101-0010 RS-485 converter is used on devices without a ground
terminal, voltage suppression is used to clamp the common mode voltage to +/-
7 volts to help prevent destruction of the converter.
For an RS-485 converter with a RS-232 interface Microfl ex offers the 101-0009.
101-0010
