On Sat, Mar 31, 2007 at 08:11:49PM -0500, Stuart Stevenson wrote: > Gentlemen, > After getting the homing to work I have another request. > I would like to see slow down spans at the end of the table > travels. This would be a user configurable distance to slow down the > axis travel when it approaches the soft limit of the axis travel. Both > rapid and feed motion would slow down in this area to make sure there > would be no overrun past the soft limit. It would allow full > interpolation and motion in this area. > thanks > Stuart
Surely it can be no more acceptable to overshoot desired positions in the center of travel than near the ends. This maximum overshoot (following error) comes down to tuning, and on a properly tuned machine is smaller than the desired machining tolerance. EMC will not overshoot a soft limit any more than it will overshoot any other programmed path, so slowing down to "make sure" is just not necessary. As you tune the machine to cut parts accurately, you are also tuning it to stay within soft limits just as accurately. Chris ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
