ON 20090416@10:43:42 PM at page:
On a web page you were interested in at:
http://massmind.org/techref/io/serial/rs485s.htm#
David A Cary[DAV-MP-E62a] edited the page. Difference:
http://massmind.org/techref/diff.asp?url=H:\techref\io\serial\rs485s.htm&version=0