Re: [CAD_CAM_EDM_DRO] CPU

Can I find out more about this step rate generator?

Jon Elson wrote:

>
> Gene wrote:
>
> > What would be an optimum CPU speed for running EMC?
>
> it depends. For servos (real servos with a DAC for velocity command)
> a 100 MHz Pentium is plenty.
>
> For steppers, you need more CPU, and it depends on how many steps
> per second you need as to how much CPU is required to keep up
> with it. A general consensus has been that 266 MHz is minimal for
> steppermod.o (which gives somewhat jittery step pulses) and that
> maybe a 333 or 450 is right for freqmod. If you use my external
> step rate generator, then 100 MHz is also good enough for steppers.
> This looks pretty much like a servo system as far as the CPU is
> concerned. But, for direct step pulse generation, you need more
> CPU cycles. If you have a high belt reduction ratio on your steppers
> or have a high microstepping multiplier ratio, you might have to
> bump these numbers up a little.
>
> Jon
>
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