Whew ! Thanks to all those that replied re: the "RS485 Multi Master" and the "9600 Baud" topics I posted in last few days. I'll sit down & digest it all then decide what to do. All very interesting replies. I hope that I can return the favour sometime with a topic I know something about ! :-) Thanks again. ______________________________________ Dave Duffy, Audio Visual Devices 8/9-11 Trade Street Cleveland Qld 4163, Australia Ph: +61 7 38210362 Fax: +61 7 38210281 E-mail: AVD@mailbox.uq.edu.au ______________________________________