About Hewlett-Packard Plotters -===-===-===-===-===-===-===-===-===-===-===-===-===-===-===-===-===-===-===- Path: cs.utk.edu!cssun.mathcs.emory.edu!emory!gatech!news.mathworks.com!news2.near.net!llnews.ll.mit.edu!usenet From: mcmorran@ll.mit.edu (Roy McMorran) Newsgroups: comp.periphs.printers,comp.sys.hp.hardware,comp.sys.hp.misc Subject: Re: HP7475 interfacing Date: 9 May 1995 19:20:40 GMT Organization: MIT Lincoln Laboratory, Lexington, MA Lines: 75 Distribution: world Message-ID: <3oofa8$8c0@llnews.ll.mit.edu> References: <3oo10t$5j0@lion.inmos.co.uk> Xref: cs.utk.edu comp.periphs.printers:25934 comp.sys.hp.hardware:8989 comp.sys.hp.misc:5846 In article <3oo10t$5j0@lion.inmos.co.uk> spittles@inmos.co.uk (Ed Spittles) writes: > >Friends, > I have recently got a second-hand HP7475 6pen plotter, which I wanted to >play with at home. This is from my 7475 manual: DIP Switch Settings for HP 7475 Plotter (RS-232) ================================================ S S U A B B B B 2 1 Y S 3 4 3 2 1 +-------------------------------------+ | +-+ +-+ +-+ +-+ +-+ +-+ +-+ +-+ +-+ | 1 | | | | | | | | | | | |X| | | |X| | | | | +-+ +-+ +-+ +-+ +-+ +-+ +-+ +-+ +-+ | | |X| |X| |X| |X| |X| | | |X| | | |X| | | +-+ +-+ +-+ +-+ +-+ +-+ +-+ +-+ +-+ | 0 +-------------------------------------+ -+---+- D M A -+---+---+---+- |PAR| | E 4 | BAUD | | | | T | | | | | | | | | | | | | | none(*)0 0 | | | 0 0 0 0 external, 2 stop bits even 0 1 | | | 0 0 0 1 75 bps, 2 stop bits none 1 0 | | | 0 0 1 0 110 bps, 2 stop bits odd 1 1 | | | 0 0 1 1 150 bps, 1 stop bit | | | 0 1 0 0 200 bps, 1 stop bit "D" is for ----+ | | 0 1 0 1 300 bps, 1 stop bit Direct (vs. "Y" | | 0 1 1 0 600 bps, 1 stop bit for Y-connector). | | 0 1 1 1 1200 bps, 1 stop bit You'll want "D". | | 1 0 0 0 2400 bps, 1 stop bit | | 1 0 0 1 4800 bps, 1 stop bit | | 1 0 1 0 9600 bps, 1 stop bit(*) Paper Size: | | 1 0 1 1 300 bps, 2 stop bits (*)ISO A4 --- 0 0 1 1 0 0 600 bps, 2 stop bits ISO A3 --- 0 1 1 1 0 1 1200 bps, 2 stop bits ANSI A --- 1 0 1 1 1 0 2400 bps, 2 stop bits ANSI B --- 1 1 1 1 1 1 4800 bps, 2 stop bits Cabling ======= The 7475 uses a non-standard cable (HP P/N 17255A). Mine rings out like this: Computer Plotter Female Male 25-pin "D" 25-pin "D" ================================ 1 ---------------------- 1 2 ---------------------- 3 3 ---------------------- 2 5 --+------------------- 20 | 6 --+ 7 ---------------------- 7 > >I know this can be an unwelcome rider, but please copy me by email as >my news access is not reliable. No problem, I'll do both. Hope this helps. -roy -- Roy A. McMorran |Business: mcmorran@ll.mit.edu |Disclaimer: This is me, MIT Lincoln Laboratory|Pleasure: mcmorran@shore.net |I'm speaking for myself 244 Wood Street B261 |http://www.shore.net/~mcmorran |----------------------- Lexington, MA 02173 |"You are not of the body. You will be absorbed." Newsgroups: comp.sys.hp.hardware Path: utkcs2!stc06.ctd.ornl.gov!news.er.usgs.gov!mcmcnews.er.usgs.gov!news.cs.indiana.edu!pur due!mozo.cc.purdue.edu!news From: jep@physics.purdue.edu (John Paquay) Date: 7 Nov 1996 18:06:20 GMT Organization: Purdue University Lines: 35 Message-ID: <55t8es$jir@mozo.cc.purdue.edu> Subject: HP 7550A Setup revisited... Hi, All: After fighting with this HP 7550A for a month, and lots of info and good suggestions from nice folks here, I finally got this plotter working after talking to one of the techs at the outfit where I bought the thing (Datastations, Harrisburg, PA). Bob, their top tech guru, told me to use the TERMINAL port rather than the computer/modem port on the plotter, because HP had done something strange with the ports and the labelling. Something about DTE and DCE ports, much of which went over my head after just a few minutes... He also recommended setting the Data Flow to LOCAL,STANDALONE and the Handshake to HARDWIRE,MODEM -- contrary to what everybody else including HP and AutoDesk had been telling me. I connected it to the PC with a plain, straight-wired 25 pin serial cable, and the thing took off plotting like crazy. I can't even begin to understand why it's working with this setup and not with the previously recommended setups, and I'm too tired of thinking about it to research it right now. But I certainly appreciate all the feedback from you folks, and hope this info might help someone else reading along... Regards, John -- John Paquay jep@physics.purdue.edu, jep@belex.mdn.com http://www.physics.purdue.edu/~jep/homepage.html ----------------------- From bakerloo@aol.com Tue Dec 17 16:46:06 1996 Date: 17 Dec 1996 17:11:54 GMT From: Bakerloo Newsgroups: comp.periphs.printers Subject: hp7475a to win95 flow control I have been having some difficulties interfacing an HP7475A plotter to a 486-based IBM compatible. After a little bit of research on the net, I came across a posting from George Poulson, who presented a cable design he found worked with an HP7475A, and a PC-compatible computer. Since his cable was based on a 25 pin connector on both ends, I could not use it on a more recent machine (most computers these days come with a DE-9 connector for serial ports). I have converted the pinouts, and it worked like a charm. Here are both versions of the cable, for those in need Hope this helps Luc Bakerloo@aol.com PS: Thanks to George Poulson for the original cable layout. PC Plotter DB25F DB25M Tx Data 2 --------------------------------------- 3 Rx Data Rx Data 3 --------------------------------------- 2 Tx Data Signal Ground 7 ----------------shield----------------- 7 Signal Ground Clear To Send 5 \ Data Set Ready 6 | Data Carrier Detect 8 /-------------------------------------- 20 Data Terminal Ready PC Plotter DE9F DB25M Tx Data 3 --------------------------------------- 3 Rx Data Rx Data 2 --------------------------------------- 2 Tx Data Signal Ground 5 ----------------shield----------------- 7 Signal Ground Clear To Send 8 \ Data Set Ready 6 | Data Carrier Detect 1 /-------------------------------------- 20 Data Terminal Ready (*)....(*)....(*)....(*)....(*)....(*)....(*)....(*)....(*)....(*)....(*) -===-===-===-===-===-===-===-===-===-===-===-===-===-===-===-===-===-===-===- As of April A.D. 1997, this same summary of DIP Switch Settings for the HP 7475 Plotter (RS-232) resides at this Web URL: http://www.cis.ohio-state.edu/hypertext/faq/usenet/hp/hpux-faq/faq-doc-165.html -===-===-===-===-===-===-===-===-===-===-===-===-===-===-===-===-===-===-===- Newsgroups: comp.sys.hp.hardware Path: utkcs2!stc06.ctd.ornl.gov!news.er.usgs.gov!jobone!newsxfer3.itd.umich.edu !news.maxwell.syr.edu!ott.istar!news.istar.net!n1ott.istar!news.corel.ca Date: Mon, 14 Apr 1997 09:35:29 -0600 Message-ID: <33524EC1.1C28@Allwest.Net> References: <33512E4A.79BF@inter-pc.on.ca> NNTP-Posting-Host: 10.100.43.92 From: Kevin Leitch Subject: Re: 7475a Pinouts Mike Kuhn wrote: > > I am looking for the pinouts for a 7475a plotter. I am attempting to > connect to an IBM 25 pin comm port. > > Any help on this would be greatly appreatiated. Cable pin-out for the HP 7440, 7470 and 7475 9-Pin Female to 25-Pin Male Plotter Computer 4-------1 2-------2 3-------3 5--|----4 6--| 7-------5 20----|--6 |--8 8-------7 25-Pin Female to 25-Pin Male Plotter Computer 1-------1 2-------3 3-------2 7-------7 20----|--5 20----|--5 |--6 5--|----20 6--| I made a jumper box with the 25 to 25 pinout which I attached to the plotter; then I just use a 25-conductor ribbon cable from the computer. Hope this is the info you need, K.W.L. -- +-----------------------------------------------------------+ KBLeitch@Allwest.Net +-----------------------------------------------------------+ -===-===-===-===-===-===-===-===-===-===-===-===-===-===-===-===-===-===-===-