On Thu, May 24, 2007 at 05:46:02AM -0700, Isak Levinson wrote: > Does the index output need to be one pulse per revolution? > Can it be similar to what there is in mach2 program: several pulses per rev > with one pulse wider than the others.
Right now, only a spindle with encoder and index pulse may be used. The "index pulse" gives one pulse per revolution, and the rest of the encoder signal (called phase-A and phase-B) ensures that emc is aware of the orientation of the spindle at all times. I think that the nist-lathe has a 1024 count per revolution encoder, which allows emc to know the angle to within about 1/3 of a degree. Jeff ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
