Steve Blackmore wrote: > On Sun, 27 Mar 2011 09:12:30 +0100, you wrote: > > >> I am a great believer in having 1 MPG per axis. I use high resolution >> encoders (500 lines upwards) and proper hand wheels so the machine can >> be operated as a manual. The hand wheels have friction but no indents, >> just like a manual machine. With a bit of practice you can turn out >> one-offs or short runs very quickly by mixing manual and MDI (works >> really well in Mach3, not so well in EMC). >> > > What's the problem with EMC? I was going to convert my two MPG's to work > with EMC. I don't use them with Mach much - step/velocity is appalling, > if it's worse with EMC - I'll forget it. > OK, the way Axis is set up, you have to change modes to go from MDI to manual. The jog dials are disabled when in MDI. I suspect you could find a way to get around that.
As for smoothness with the MPG, I put a filter between the MPG output and EMC's jog input, to reduce the graniness of the position. When the jog dial is set for the fastest movement (.01" per click on my setup) the servos would rattle loudly without this. With a simple filter added, there is only the slightest hint of a hum. The filter is just another HAL component, about 3 lines of code. Jon ------------------------------------------------------------------------------ Create and publish websites with WebMatrix Use the most popular FREE web apps or write code yourself; WebMatrix provides all the features you need to develop and publish your website. http://p.sf.net/sfu/ms-webmatrix-sf _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
