From owner-freebsd-questions@FreeBSD.ORG Fri Oct 13 11:05:05 2006 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 53E1216A412 for ; Fri, 13 Oct 2006 11:05:05 +0000 (UTC) (envelope-from bsam@ipt.ru) Received: from mail.ipt.ru (mail.ipt.ru [80.253.10.82]) by mx1.FreeBSD.org (Postfix) with ESMTP id 52AB743D66 for ; Fri, 13 Oct 2006 11:05:03 +0000 (GMT) (envelope-from bsam@ipt.ru) Received: from doc.sem.ipt.ru ([192.168.12.1] helo=ipt.ru) by mail.ipt.ru with esmtp (Exim 4.62 (FreeBSD)) (envelope-from ) id 1GYKqa-000LqY-6P; Fri, 13 Oct 2006 15:05:00 +0400 Received: from bsam by ipt.ru with local (Exim 4.63 (FreeBSD)) (envelope-from ) id 1GYKrb-00014J-JB; Fri, 13 Oct 2006 15:06:03 +0400 To: phil@primeradesigns.com References: <1160735521.15042.7.camel@sled10.27sjcr> From: Boris Samorodov Date: Fri, 13 Oct 2006 15:06:03 +0400 In-Reply-To: <1160735521.15042.7.camel@sled10.27sjcr> (Philip M. Brown's message of "Fri, 13 Oct 2006 11:32:01 +0100") Message-ID: <81769636@srv.sem.ipt.ru> User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.0.50 (berkeley-unix) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: freebsd-questions@freebsd.org Subject: Re: moxa multiport serial cards X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 13 Oct 2006 11:05:05 -0000 On Fri, 13 Oct 2006 11:32:01 +0100 Philip M Brown wrote: > I am a long time user of freebsd but have no -NO knowledge of moxa > multiport cards. I see there is great support for moxa on freebsd so I > put my question forth. > i have acquired Moxa Model cp-114 and am trying to figure out its > usages. > The CP-114 Series of multiport serial boards is designed for RS-232 and > RS-422/485 industrial communication. The CP-114 Series has 2 ports for > RS-232 or RS-422/485, selectable by jumper, and 2 ports for RS-422/485, > with each RS-422/485 port able to control up to 32 devices in a ^^^^^^^^^^ [1] > multidrop environment. > so does this mean I can wire up one of the rs-232 ports to a patch ^^^^^^ [2] > panel > and then split that into 32 rj=45 connectors which would in turn be > connected to various serial devices (pc/router/switchers). No, mind your [1] and [2]. RS-232 is a point-to-point interface, while RS-485 is for master->multiple slaves interface. > or do i need another box that translates these signals. I assumed the > card did all the processing. If your hardware (you want to control) uses only RS-232 you should install a miltiport RS-232 card. BTW, I've got a SUNIX UTS7009P USB to 7 port RS-232 adapter which uses a pl2303 chip and works great at FreeBSD. If your hardwares use RS-485 ports than you can connect (up to 32/64/.. -- depends on port chips) to RS-485 net and control them through one master device (one RS-485 port at your server). Setting up an RS-485 net has it own tips and tricks which you may find at Google. WBR -- Boris Samorodov (bsam) Research Engineer, http://www.ipt.ru Telephone & Internet SP FreeBSD committer, http://www.FreeBSD.org The Power To Serve