You might have a 1.8° per step motor which is more common. At least the math adds up to that. If you change your steps/rev to 200 I bet your right on.
John On 10 Sep 2009 at 20:00, Ian R Upton wrote: > Thanks for the response. > > The erratic behaviour appears to be a combination of motor current, > step > velocity and stop/start delays. > > I read the documentation again.......... > > A lot of fiddling and it is now sitting there repeatedly performing > the > same step count. > > This stability lets me look at the issue of number of steps per 360 > degrees. > > The motor has 50 steps/rev (7.2 degrees/step) . > In the step config process > Leadscrew pitch = 1.00mm > Steps/rev = 50; > Microstep = 1:1, (driver pwb also set to 1:1) > > Therefore I would expect 50 steps to move the motor shaft 1 rev for > a > jog step of 1.00MM. > > But no! I need to have a jog step of 4.00MM to get the motor to move > 1 rev. > > I will chase further. > > Ian > > -------------------------------------------------------------------- > ---------- > Let Crystal Reports handle the reporting - Free Crystal Reports 2008 > 30-Day > trial. Simplify your report design, integration and deployment - and > focus on > what you do best, core application coding. Discover what's new with > Crystal Reports now. http://p.sf.net/sfu/bobj-july > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
