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From: Tony Williams
Subject: Re: 8051 GPIB interface
Date: Sun, 15 Sep 2002 07:25:50 +0100
References: <firstname.lastname@example.org> <3D8257F3.email@example.com> <firstname.lastname@example.org> <email@example.com> <firstname.lastname@example.org>
NNTP-Posting-Date: Sun, 15 Sep 2002 06:59:38 +0000 (UTC)
User-Agent: Pluto/1.14i (RISC-OS/3.60)
In article <email@example.com>,
Nico Coesel wrote:
> Tony Williams wrote:
> > But (as already suggested) a cheap IEEE card is
> > probably the better way to go.
> That shouldn't be a problem. But is there any information on what I
> should send to the PSU? Is there a standard? From what I've seen
> inside the PSU it looks like the GPIB circuit consists of logic, no
It will be straightforward ASCII commands, but each
mfr's command-set is different, so you probably can't
do it without some sort of documentation on that supply.
To show how easy it is, below are the commands we have
to use to control up to 5 power supplies with one IEEE
controller. Only as an example, because they are almost
certainly not applicable to your HP supply.
"24.0 V VSET" \ Set Vout (0 to 32V).
"28.0 V OVSET" \ Set the overvoltage trip (0 to 33V).
"1.5 A ISET" \ Iout max (0 to 30A).
"OVRST" \ Untrip any possible overvoltage trip.
"ENABLE" \ Bring the supply up.
"VOUT?" \ What is your present Vout?
"IOUT?" \ What is your present Iout?
"MODE?" \ Are you in CV or CI mode?
"DISABLE" \ Shut the supply down.
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