Hi Aaron, I've recently been messing about with microstepping drivers trying to get precise rotation and some speed out of a little lathe head. I found that microstepping gave me all sorts of problems and that, at 1/8 steps - the limit of the drive I had, the highest possible speed was much reduced and lost steps were common. Also, set ups in the .ini file became more critical so that I was having to use velocity settings to the second decimal place and that an increase of 0.01 would make a noticeable change in velocity. I decided eventually that microstepping was too risky and so I have settled on 1/2 steps and different pulley ratio.. Your problems are undoubtedly with the values set in MAX_VELOCITY and STEPGEN_MAXVEL in the [AXIS_x] section of the .ini file which are the values that adjust the rapid speeds of each axis. The values in the similar settings in the [TRAJ] section limit the velocity for the whole machine and so should be just a little higher then the highest values in any of the [AXIS_x] sections. The same applies to acceleration values... My set up was in metric with the latest release of EMC2 on Dapper Drake on a 1.7GHz processor PC with 1Gb ram and using a NEMA 23 stepper driving a watchmakers' lathe headstock through toothed belt drive.
Best wishes, Ian ----------------------- Ian W. Wright Sheffield UK ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
