Steve Blackmore wrote: > On Wed, 30 Sep 2009 22:56:43 -0500, you wrote: > >> Gentlemen, >> I have previously requested the rotary axis usage as follows: >> >> 1: the rotary position stays within 0 and 359.999 >> you never see 360 (or more) in the program nor on the position screen > > Many schools of thought and none are "wrong" and all should be catered > for. > > The "no such number as 360" is a poor implementation IMO. > > I often do jewel and the like for the better half, I deep engrave > wrapped designs all the way around the axis, sometimes spiraled, having > to stop at 359.99 doesn't work, been there done that, threw the tee > shirt away, it leaves gaps in the design. > > Keeping going in one direction has the added benefit of countering > backlash. > > Rollover is the best solution for me, it behaves just like a linear > axis. 720 deg is two turns etc. Optional return to 0 the quick way is > often used too. > > Mach, sensibly, has every possibility for rotary axis, as we beat it to > death years ago and decided there was no "right way". > > ALL variations should be catered for. Just making it suitable for one > person's preference is short sighted.
I'll second all of that. I use a continuous rotation on a couple of parts I've coded, so that 0 follows 270 going FORWARD, while on other parts going BACK to 0 from 270 is the correct direction. 360 upwards would be another 'acceptable' way of coding continuous stuff but should not be 'essential' ... a switch between 'absolute' and 'continuous' IS essential. -- Lester Caine - G8HFL ----------------------------- Contact - http://lsces.co.uk/wiki/?page=contact L.S.Caine Electronic Services - http://lsces.co.uk EnquirySolve - http://enquirysolve.com/ Model Engineers Digital Workshop - http://medw.co.uk// Firebird - http://www.firebirdsql.org/index.php ------------------------------------------------------------------------------ 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 Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
