Re: Plotter HP 7470A Option 003 Message #4 Posted by Tony Duell (UK) on 7 Mar 2003, 6:34 p.m., in response to message #1 by Jürgen (CH)
Yes, I believe the 7470 Opt 003 is somewhat rare (and no, mine is not for sale!).
There was a plotter ROM for the HP41 (also somewhat hard to find) which contained m-code functions to send the appropriate HPGL commands to draw lines, etc, and a FOCAL program to plot a user-defined function (a bit like the PRPLOT program in the printer ROM). Oh, and othe stuff besides.
If you have this ROM, it will automatically find and use the HPIL plotter.. It will not work at all with the RS232 plotter (it asks the plotter for things like the plotting limits, and the RS232 version doesn't handle this correctly). However, if you have an HPIB plotter (not necessarily a 7470 -- I've uses a 7440 Colorpro) and a 82169 HPIL-HPIB translator, then
provided you use manual addressing and tell the HP41 where the plotter is (MANIO <HPIB address> SELECT , where <HPIB address> is a number giving the HPIB address of the plotter), then it all works perfectly. That's true plug-n-play :-)
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