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overview
 Basics of the RS-485 Standard
What is an RS-485 network? RS-485 allows multiple devices (up to 32) to communicate at half-duplex on a single pair of wires, plus a ground wire (more on that later), at distances up to 1200 meters (4000 feet). Both the length of the network and the number of nodes can easily be extended using a variety of repeater products on the market.
preview:
http://www.bb-elec.com/tech_articles/rs485_basics.asp
6/17/2005
Tags: serial
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