2012/2/20 Roland Jollivet <roland.jolli...@gmail.com> > So the norm is that a stepper system can run off the parallel port, but for > DC servo's, extra hardware is required to sample the encoders. > > My question is; if one built a headless system(no video) and disabled > drivers wherever possible, would such a system be fast enough to run DC > servo's and read the encoders on the parallel port? >
It is possible of course. But with low speed and/or low accuracy. It depends on your requirements. With 100ppr encoders at 3000rpm it's 50 kHz, might be too much even for very low latency. And common 2500ppr encoders are hardly compatible at all. Andrew ------------------------------------------------------------------------------ Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
