Hello Andy, Thanks for your reply. I will look for the other Mesa cards and try to discover the differences.. i will keep un touch Regards j^p
> From: bodge...@gmail.com > Date: Thu, 13 Dec 2012 18:13:53 +0000 > To: emc-users@lists.sourceforge.net > Subject: Re: [Emc-users] linear scales Heidenhain > > On 13 December 2012 17:39, jean-paul coninx <jp....@hotmail.com> wrote: > > > I am an owner from a maho mhc 700c with a heidenhain tnc 135 controller. > > The controller doesn t work any more. > > I have read something about retrofitting. The most people use the Mesa > > cards in combination with Linuxcnc. For already a few years (no time like > > everyone) I a bought a Heidenhain EXE 935 convertor ( 3 axis from sinus > > wave to ttl signal) . The moment I bought these EXE 935 the Mesa 7i49 didnt > > exist . In my opinion I have two options : > > > > > > Mesa 5i20 + Exe 935 + 7i33 and 2 x 7i37TA > > Mesa 5i20 + 7i49 + 2 x 737TA > > > Do you know for sure that the 7i49 works with the Heidenhain scales? > I can imagine that it might, but it is really intended for use with Resolvers. > > I know of someone using Heidenhain scales and the EXE convertors and > he is measuring to very high resolution (I think he is managing 10nm > resolution and 200nm positioning). > > It is possible that the FPGA on the 5i20 is too small for the 7i49 > firmware. The 5i23 is not a lot more expensive and has a bigger FPGA. > I still had to sacrifice one of the encoder counters on my (admittedly > unusual) 7i49/7i44/7i39 firmware on the 5i23. Things would be rather > tighter on the 5i20. > > The 7i25 / 7i77 combination might be worth a look, as might the Pico > PPMC setup, which is possibly a little more turnkey. > > -- > atp > If you can't fix it, you don't own it. > http://www.ifixit.com/Manifesto > > ------------------------------------------------------------------------------ > LogMeIn Rescue: Anywhere, Anytime Remote support for IT. Free Trial > Remotely access PCs and mobile devices and provide instant support > Improve your efficiency, and focus on delivering more value-add services > Discover what IT Professionals Know. Rescue delivers > http://p.sf.net/sfu/logmein_12329d2d > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ LogMeIn Rescue: Anywhere, Anytime Remote support for IT. Free Trial Remotely access PCs and mobile devices and provide instant support Improve your efficiency, and focus on delivering more value-add services Discover what IT Professionals Know. Rescue delivers http://p.sf.net/sfu/logmein_12329d2d _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
