I'm new to EMC and CNC, and have been trying to get my head around what's going on with EMC and a CNC machine.
I've gone through (read) the CNC setup process a couple of times, and I have to admit that I'm still a bit confused. What I'm not understanding, really, is just exactly _what_ EMC is dispensing through the parallel port. It makes sense that the level of detail/control varies with the sophistication of the CNC machine; what I'm not real clear on is *how*. Using the example of a 'basic' stepper motor machine with X/Y/Z axes (axises?), and the parallel port having Step and Direction output pins for each axis: is EMC actually sending out a step/direction bit for every single position change (i.e. step of the stepper motor)? EMC would control how fast the Step pulses were sent so as to control how fast the stepper motor turned, yes? How is the output for a 'dumb' machine different from that for something more advanced? I know these are pretty basic questions, but a Google search didn't turn up anything with this level of detail (at least, not in the first 20 or so pages of results!). If there exists a site or document that explains these kinds of gory details, I'd certain welcome the redirection. DaveM -- Encrypted email encouraged and PREFERRED Monday, November 03, 2008 @ 1901 ** I try to make everyone's day a little more surreal. ** ---------------------------------------------------------------- ------------------------------------------------------------------------- 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-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
