On Mon, 11 Nov 2013, Hugh Wylie wrote: > > What symptom do you have? > > > > For example, irrespective of alternate commands G1 x50 Fr / G1 x0 Fr, where > 100 <= r <= 2500, the joint accelerates smoothly to a maximum feedrate > somewhere in the range of 170 - to be more precise, the reported step pulse > interval of ~4ms (~250Hz), and eventually decelerates to the required end > position. > > > > Varying steplen and stepspace have no effect (within reasonable bounds, of > course - the pulse width is observed to reflect ini parameter value). The > cap on joint step rate accordingly manifests in large to very large > following errors, depending on the value of 's' - you will see that > min_ferror is set to 50! >
What is your servo thread latency? I've seen pathological stepgen behaviour with poor servo thread latency Peter Wallace Mesa Electronics ------------------------------------------------------------------------------ November Webinars for C, C++, Fortran Developers Accelerate application performance with scalable programming models. Explore techniques for threading, error checking, porting, and tuning. Get the most from the latest Intel processors and coprocessors. See abstracts and register http://pubads.g.doubleclick.net/gampad/clk?id=60136231&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
