2009/10/23 Jon Elson <[email protected]>: >> Which is an interesting point. It seems that a hardware quadrature >> counter is likely to be counterproductive if you have a low-count >> encoder. >> > I'm not sure it is COUNTER-productive, but if the spindle encoder > resolution times > the maximum spindle speed doesn't exceed the ability of the software > encoder counter, > than it doesn't GAIN anything.
Perhaps I should have elaborated further. What I was saying is that if the hardware encoder and driver does not offer an interpolated position every servo cycle and the encoder pulse rate is low enough to have multiple servo threads per encoder count, then EMC will see a stationary spindle with the hardware encoder. This might cause the problems we are seeing. In that situation the software encoder, which does offer position-interpolated, is paradoxically superior. -- atp ------------------------------------------------------------------------------ Come build with us! The BlackBerry(R) Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9 - 12, 2009. Register now! http://p.sf.net/sfu/devconference _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
