Re: IO interface.

I have done extensive work in the past with this bus and high speed test
equipment.
It is very slow. With a pentium 200, we saw delays of several hunderd
milliseconds
in communicating with the equipment. We ened up converting to inexpensive
digital i/o boards controlling relays etc. I think the cheap digital i/o
boards would be
a much better approach.

Marshall

-----Original Message-----
From: Arne Chr. Jorgensen <instel@...>
To: CAD_CAM_EDM_DRO@onelist.com <CAD_CAM_EDM_DRO@onelist.com>
Date: Thursday, September 30, 1999 6:07 PM
Subject: [CAD_CAM_EDM_DRO] IO interface.

>From: "Arne Chr. Jorgensen" <instel@...>
>
>Hi,
>
>There has been some discussion about IO interface, - parport, USB,
>SCSI, IDE, etc.
>
>I just came to think of something, what about the IEEE 488 bus. I
>remember that you had this bus on plotters, measuring devices, and
>such. (HP-IB) This one could address about 30 attached devices. It
>should be possible to find some ISA cards, and some logic chips,
>so you could make your own IO device. It has a 8bit data bus, and
>should be fast enough.
>
>I have never used this bus, so I am asking if any of you have
>something to say about it. In my opinion, this might be something
>to look into. It is often very good to use a standard way to do
>things, and in this case, I think there might be several things
>you could find on the surplus marked, that you could make use of.
>All from recorders, to power supplies.
>
>Maybe we could add stepper interface, servo, DRO and all kind of
>stuff. Just hook it into the cable, and you are very close to a
>plug & play solution.
>
>Please come with comments on this, because I think this may be a
>very nice solution. ( if it works )
>
>//ARNE
>
>>Welcome to CAD_CAM_EDM_DRO@...,an unmoderated list for the

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