Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!uwm.edu!lll-winken!telecom-request From: rfarris@rfengr.com (Rick Farris) Newsgroups: comp.dcom.telecom Subject: Re: RS-485 Information Wanted: URGENT Message-ID: Date: 25 Mar 91 18:39:14 GMT Sender: Telecom@eecs.nwu.edu Organization: RF Engineering, Del Mar, California Lines: 27 Approved: Telecom@eecs.nwu.edu X-Submissions-To: telecom@eecs.nwu.edu X-Administrivia-To: telecom-request@eecs.nwu.edu X-Telecom-Digest: Volume 11, Issue 244, Message 8 of 9 In article 0004133373@mcimail.com (Donald E. Kimberlin) writes: > If you don't really want to build the interface, some > manufacturers have been making RS-232 (V.24/28) to RS-485 > adapters since late 1984. The one I know of is ARK > Electronic Products of Melbourne, FL, since absorbed into > AT&T/Paradyne of Largo, FL. Even better, *Inmac* carries in-line RS-232 <--> RS-485 converters, and will ship today with delivery tomorrow. Inmac charges full list price on everything they sell, but if you call them today they will ship today, *and they ship on open account on the first call with no credit checks or other hassles.* While expensive, I have found nothing at Inmac that wasn't of the highest quality. I'm particularly fond of their T-switches. I call Inmac at 1-800-547-5444. As to the actual packet protocol over RS-485, I have written drivers and would be happy to answer specific questions. Rick Farris RF Engineering POB M Del Mar, CA 92014 voice (619) 259-6793 rfarris@rfengr.com ...!ucsd!serene!rfarris serenity bbs 259-7757