Jon, On my BP mill with an Analam control I have a MPG. The MPG only works when I have 0.0001, 0.001, and 0.01 selected. It is disabled when jog and rapid is selected. Each click of the MPG gives me one unit of what is selected. With 0.01 selected it will move along at about 20 IPM when I spin the dial. All the MPG's I have seen on commerical controls work this same way. I'm guessing that the continue to move is just EMC catching up to your jog somehow. I put jog buttons on my plasma and they work fine.
John On 24 Aug 2008 at 1:08, Jon Elson wrote: > 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 > ------------------------------------------------------------------------- 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
