B GARDNER wrote: > Hello, > > When using EMC2 with stepper motors and software generated steps the highest > step rate seems to be limited by the computer latency. We have a clear > formula to calculate that rate based on the stepper driver requirements and > the computer latency. > > How do we calculate the highest step rate when we use hardware generated > steps (Pico, Mesa, etc.)? How does the computer latency effect these rates? > Are there other factors? > The step rate is generally stated by the board manufacturer. It is totally independent of CPU speed. For instance, the Pico Systems Universal Stepper Controller is rated for 300,000 steps/second on all axes simultaneously. That is actually a conservative rating, and it can go over 500,000 steps/sec if you really need it.
By default, EMC checks the position 1000 times a second and updates the commanded velocity, but you could turn that rate up also, if needed. Jon ------------------------------------------------------------------------------ This SF.Net email is sponsored by the Verizon Developer Community Take advantage of Verizon's best-in-class app development support A streamlined, 14 day to market process makes app distribution fast and easy Join now and get one step closer to millions of Verizon customers http://p.sf.net/sfu/verizon-dev2dev _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
