On Thu, 2011-05-12 at 20:41 -0500, Jon Elson wrote: > dave wrote: > > > > What are you using for electronics to examine the encoder output? > > > My Universal PWM Controller has all the hardware needed, so I just made > a different encoder module in the VHDL language to read the serial > stream verbatim, and send it as ten bytes. It is not in any way a > "finished product", just entirely a prototype hack. But you have to start someplace. :-)
> > I keep thinking about an encoder with that resolution directly on the > > shaft of an indexer or even an A, B or C axis. Then again, maybe 10K > > counts/rev is good enough, using my usual 2500 ppr Koyo encoders. > > > The aA1000 is one million counts/rev (actually I am guessing 1048576 or > 2 ^ 20) just the same device with > higher interpolation, I think.) > > On my machines the computer is powered by 120V single phase and is > > independent of the 3 phase used for spindle, servo drives, etc. > > The computer is powered up all the time so any movement is tracked. > > Don't know if this is practical for everyone. > > > Well, I'm sure that's the way most people run their Fanuc-controlled > machines, the only time they are powered off is when the power goes out, > or they are being serviced. > > Jon > > ------------------------------------------------------------------------------ > Achieve unprecedented app performance and reliability > What every C/C++ and Fortran developer should know. > Learn how Intel has extended the reach of its next-generation tools > to help boost performance applications - inlcuding clusters. > http://p.sf.net/sfu/intel-dev2devmay > _______________________________________________ > Emc-developers mailing list > Emc-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-developers ------------------------------------------------------------------------------ Achieve unprecedented app performance and reliability What every C/C++ and Fortran developer should know. Learn how Intel has extended the reach of its next-generation tools to help boost performance applications - inlcuding clusters. http://p.sf.net/sfu/intel-dev2devmay _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
