Re: stepper pulse rate idea

[Jon Elson <elson-at-pico-systems.com>]

jmkasunich-at-ra.rockwell.com wrote:

>
>Ray wrote:
>
>  
>
>>Those of you who have applied the EMC to steppers that run
>>from the parport know that you have to design into the machine
>>a compromise between speed and resolution.
>>    
>>
>
>  
>
>>This compromise is fixed in part by Jon's PPMC stepper rate
>>generator card.
>>    
>>
In part?  What part is NOT fixed by it?  You get 300,000 steps/second, 
extremely smooth
step pulse trains, including the accel./decel. part.  The only thing is, 
hardware doesn't
come free.  But, you get encoder counters, digital input and output, and 
estop all bundled
with it, and all working off one parallel port.

Jon