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- From: cej@dstos3.dsto.gov.au
- Newsgroups: comp.sys.ibm.pc.hardware
- Subject: Re: Interfacing HPIB plotter to centronics
- Message-ID: <1992Nov19.133440.165176@dstos3.dsto.gov.au>
- Date: 19 Nov 92 13:34:39 CST
- References: <1992Nov16.181921.24183@fwi.uva.nl>
- Organization: Defence Science and Technology Organisation
- Lines: 53
-
- In article <1992Nov16.181921.24183@fwi.uva.nl>, stolk@fwi.uva.nl (Bram) writes:
- >
- > Howdy,
- >
- > I have a HP plotter, model 9872C which I would like to connect to
- > an IBM PC compatible.
- >
- > The problem is the interfacing.
- > The HP has a connector for a HPIB aka GPIB aka IEEE-448 aka IEC-625 bus.
- > This is a bus system, whereas my PC has a simple IO port, being
- > the Centronics parallel port.
-
- You _can_ buy GPIB cards for PCs, if you can afford the A$300-$900 (depending
- on speed) to buy it. We have some National Instruments cards that work fine,
- and we hook up our HP plotters and lots of other instruments without problems.
-
- You can buy a GPIB to serial or parallel box (I can't remember which). This
- is cheaper than GPIB cards, but is slower & only works with 1 instrument at
- a time.
-
- > Then, I hope, I should be able to use regular plotter drivers from
- > standard PC software to drive my plotter.
-
- We redirect program HPGL output to a file, and then use my program to
- send the data over the GPIB bus. It has to be done this way because
- no "commercial" program understands GPIB.
-
- > Second, it may be that every now and then GPIB bus commands must be
- > xmitted, so that a pre configuring the system before using DOS applications
- > won't do.
-
- HPGL stuff will occasionally have serial commands (I strip these out in my
- program). They have them because HP plotters can have either GPIB OR serial
- interfaces...!
-
- > Third, it may be the case that the HP9872C does not use the common
- > plotter language HP-GL, as I was hoping.
-
- This model of HP plotter is very old, and only understands a subset of
- HPGL. My prog sorta handles this model by conversion of commands & ignoring
- some tricky commands...It likes the 7475A a lot better.
-
- --
- Chris Jones E-mail: cej@dstos3.dsto.gov.au
- CSS/CD/ERL Phone: +61 8 259 6758
- DSTO Salisbury, South Australia Fax: +61 8 259 6328
-
- Disclaimer: The opinions expressed are purely personal and do NOT represent
- the official view of DSTO.
-
- "I'm going to put the shame file in the sludge file! Or is that the sludge
- file in the shame file? Shame, sludge, sludge, shame, ...
- That's life, get nicked.." Derrin Hunch, Fast Forward
-