On Fri, Oct 02, 2009 at 12:18:50PM +0100, Steve Blackmore wrote: > " One occurrence that is interesting - when the rotation in the same > direction reaches 360.0 (a full circle), it continues to increase. It > does not become zero degrees again."
I think your book is describing the same behavior EMC has always had. My opinion is that's the only sane way for rotaries that can't turn forever, like a tilting head. Lots of users have pointed out (rightly in my opinion) that this behavior is awkward for rotaries that turn forever, because the position winds up forever. Once an axis says "12345.67" you have no idea from looking at the number which way it points. You have no idea what number to program in either G90 or G91 mode to get it to 90 degrees from there without an unwanted 30-ish turn unwind. Stuart's machine is like this, where C turns forever (but not B) and I think the solution he proposes is an at-least-somewhat-sane way of dealing with it. Are you objecting to this second scheme being added at all? If so, why? Is there another way, that's better in your opinion, that a different control handles an unlimited-turning rotary that solves the windup problem? Chris ------------------------------------------------------------------------------ Come build with us! The BlackBerry® 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/devconf _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
