Re: [Emc-developers] Proposing a Lookahead implementation for the EMC2 module

[Jon E. <el...@pi...>]

Chris Morley wrote:
> In a normal configuration the trajectory calculations are done at the servo thread
> speed, but this can actually be set to something else, previously it was often set 
> to run ten times faster then the servo thread but that was found unnecessary.
>
>   
No, I believe the trajectory planner used to default to run 10X SLOWER 
(not faster)
than the servo thread.  This could cause arc interpolation to be more 
polygonal,
but the real reason it was changed was to reduce lag that caused the Z axis
when rigid tapping to not exactly follow the spindle position after the
spindle reversal.

Jon