Howdy all,

     Perusing the doccy's while trying to troubleshoot a problem on my Z 
axis,  and I was playing around with the variables MAX_VELOCITY, 
MAX_ACCELERATION, and STEPGEN_MAXACCEL.  While the first two variables 
are relatively self-explanatory, I'm having a difficult time figuring 
out what exactly the third one does, and how it interacts with the first 
two.  The docs say this: "Acceleration limit for the step generator".  
But how does the step generator affect the first two variables?  Playing 
around with the variables I get all sorts of things happening including 
joint following errors (this is a stepper machine).

Thanks,
Mark

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