I put a jog dial (MPG) on my mill running with EMC2 after the recent CNC Workshop. It works great. Jeff Eppler showed me how to do it and created a low-pass filter for the jog function, to keep from buzzing the servos. Something I just noticed is that the jog overshoots when the jog override slider is at, say, 50%. It gives excellent jogging response at 100%. I'm guessing that when I try to jog above 50% with the jog dial, and the jog rate set for it with a jog rate switch that sets the value of axis.n.jog-scale, then EMC limits the velocity to 50%, and the rest of the commanded move is played out after the jog dial stops moving at a rate that would need over 50% jog speed.
Could anyone else with a jog dial check this behavior out and see if your system does it, too? Thes business of continuing to move after you stop turning the dial is not an optimum behavior, although I'm not sure what is the best way to handle this. My guess is to have the jog dial not obey the jog override at all would be best, or to have the excess movement commanded by the dial to be truncated would be the second best. But, having movement continue after you stop turning the dial is obviously the worst behavior. I just wanted to make sure it wasn't a side effect of the low-pass filter or some other aspect of my PPMC driver/boards. Thanks, Jon ------------------------------------------------------------------------- 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 [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
