Heidenhain also sells absolute encoders that output SSI. I've used them before. They are expensive. As I recall $800-$900 for a rotary one. If they are wired wrong they can easily be destroyed... An electrician kept changing the wiring and destroyed two of them before I could intervene. He would come in very early and must have been asleep while working!
Dave On 1/21/2016 7:03 PM, andy pugh wrote: > On 21 January 2016 at 23:23, Stuart Stevenson <stus...@gmail.com> wrote: > >> I think a resolver would be the way to go. > Possibly not enough resolution for a rotary table. > Something like the Heidenhain angle encoders might be better, they > turn up on eBay occasionally. > http://bicep.caltech.edu/~yuki/servo/208_736-27.pdf > > However the absolute ones appear to use EnDat, and I don't know if > there is any LinuxCNC support for that. > > Renishaw have some that use SSI (Or BiSS, I have forgotten which, but > something there is a Mesa driver for). > > If you could find a head for this... > http://www.ebay.co.uk/itm/Renishaw-RESR-20um-Rotary-Optical-Angle-Encoder-Ring-52mm-8192-Line-Count-/161850920680?hash=item25af110ee8:g:gtcAAOSwT5tWGQ8E > > ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
