HP Forum Archive 21

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HP-IL beginners question Message #1 Posted by John Abbott (S. Africa) on 28 May 2012, 2:58 a.m. Hi, being very new to the world of HP-IL and the HP71, I have a real "newbie" question: If my HP41 is connected to both the HP71 and a printer, can I print from the HP71 to the HP41 connected printer? Thanks and best regards John PS: If this is possible, is it easy enough once the manuals are read. Edited: 28 May 2012, 4:21 a.m.

Re: HP-IL beginners question Message #2 Posted by Eric Smith on 28 May 2012, 5:04 a.m., in response to message #1 by John Abbott (S. Africa) Generally speaking, no. The HP-41 always wants to be the loop controller, unless it has an HP-IL Development module. There are two cases to consider. If the printer is a non-HP-IL printer, such as the 82143A or the infrared printer (82240A/B with 82242A infrared printer module in HP-41), then doing this would require having an HP-IL development module, and writing a program for the HP-41 to act as an HP-41 device rather than controller, emulate an HP-IL printer, and print to the non-HP-IL printer. If the printer is an HP-IL printer, such as the 82162A, 82905B, or 2225B, then you'd still need the HP-IL Development module, to prevent the HP-41 from acting as the loop controller, so that the HP-71B could talk to the HP-IL printer directly.

Re: HP-IL beginners question Message #3 Posted by John Abbott (S. Africa) on 28 May 2012, 5:12 a.m., in response to message #2 by Eric Smith Thanks Eric. I have a 82240B printer with a82242A IR module. This sounds rather complicated for a HP-IL beginner! Thanks for your help Regards John

Re: HP-IL beginners question Message #4 Posted by Eric Smith on 28 May 2012, 1:11 p.m., in response to message #3 by John Abbott (S. Africa) Unfortunately there's no easy way to use the 82240 with the 71B. I vaguely recall having seen an article or paper about someone adding an IR LED and associated circuitry to a 71B, and driving the IR printer, but now I can't find it.

Re: HP-IL beginners question Message #5 Posted by Geoff Quickfall on 28 May 2012, 5:45 p.m., in response to message #4 by Eric Smith Hi Eric Now that is one article I would like to see. Can you forward it to me if you find it. Cheers, Geoff

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