Hi all, (For Peter) I think I found the main problem with tuning the X and Y axes. I used the registry values of the old system to set the initial parameters for EMC, and goofed on interpreting the accel parameters. In the Galil world, these are in encoder counts / sec^2 rather than units per sec^2. So MAX_ACCELERATION was set much too high. After backing it off, I am getting much better results for the X and Y axis.
My question now is about angular axes. While the X and Y axes have on the order of 5000 counts per inch, the rotational axis only has 51.1 counts per degree (18400 per revolution) If I use 18400 for my INPUT_SCALE, I can tune the axis rather easily. Of course in this case if I issue: G1 A1 F50 It will turn 360 degrees rather than 1 degree. If I set INPUT_SCALE to 51.1 and adjust MAX_VELOCITY and MAX_ACCELERATION proportionately, tuning again becomes much more difficult, ISTM due to the granularity of the scaling. IOW, for the linear axes X and Y I get roughly 5000 counts per machine unit (inch), but with the angular A axis I only get 51 counts per machine unit (degree). Is this the correct way to set up an angular axis? Thanks, Eric ------------------------------------------------------------------------------ Come build with us! The BlackBerry® Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9-12, 2009. Register now! http://p.sf.net/sfu/devconf _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
