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From: gurr@west44.UUCP
Newsgroups: net.micro
Subject: Re: What is RS-432??? - (nf)
Message-ID: <170@west44.UUCP>
Date: Wed, 11-Apr-84 16:52:38 EST
Article-I.D.: west44.170
Posted: Wed Apr 11 16:52:38 1984
Date-Received: Wed, 11-Apr-84 01:41:48 EST
References: <6582@uiucdcs.UUCP>
Organization: CS Dept., Westfield College, London
Lines: 21

<>
The main difference between RS232 and RS432 is that (as everyone knows) the
RS232 signals use +12 and -12 volts, whereas RS432 uses +5 and 0V. There is
not a great deal of problem in interfacing the two (at least, I have found
none) mainly since +5 is high enough to be recognised by the RS232 receiver
as +12 and also that the signal is usually pulled down to -12V by the
receiver (at least on large machines). If you do have problems interfacing
the two, try dragging the signal down to -12V by a suitable resistor (eg
1K).

cbosgd
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	Dave Gurr, Westfield College, Univ. of London, England.