On Wed, Oct 29, 2008 at 10:09:23PM +0000, Chris Morley wrote: > > if some one programs m3 then m4 does EMC put the brake on for a > certain amount of time, error, or just change directions of the > spindle.
Just changes direction. This is also how rigid tapping works. > On a related question when using constant surface feed does Emc wait > till the spindle is up to speed or just assume that the spindle is up > to speed. It does not wait unless you do it explicitly. > A guy wants to but the brake on to stop the spindle when he switches > from m3 to m4 (apparently he doesn't program a m0) He could do that in ladder/hal/whatever. If he had feedback for "the spindle is stopped now" it would be best. > I guess i'm asking how EMC decides when the spindle brake goes on. > I would think in most cases a brake should not be put on until the > spindle is already stopped. but I don't see any pins for that either. > Maybe I missed them.. It turns on the brake when you tell the spindle to stop (m5, m2, abort, estop). You could add a brake delay easily in classicladder, but stopping as fast as possible is sometimes really what you want. ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
