Kirk,

Problem is that I bought the cnc4pc board with the speed controller in
mind. The doc said it supported emc, so I guess there must be a way.
Arturo of cnc4pc is looking into it.

So if I can avoid adding extra hardware, this would be nice.

I agree if you want very fine control, your solution would be the best
way to go.


Geert


Kirk Wallace wrote:
> 
> A common problem with pwmgen and seggen is that they use the parallel
> port, which has a limited bandwidth. I tried controlling my 0 to 10 Volt
> VFD with a parallel port PWM and RC filter, and found that a decent
> filter slowed the change in signal to a second or more. Typically, you
> need an external device that can produce much higher frequencies. 
> 
> The parallel port is much better at transmitting data. So for my VFD's ,
> I started work on a 0 to 10 Volt DC analog DAC board here:
> 
> http://www.wallacecompany.com/machine_shop/EMC2/serial_dac/
> 

-------------------------------------------------------------------------
This SF.net email is sponsored by: Microsoft
Defy all challenges. Microsoft(R) Visual Studio 2005.
http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
_______________________________________________
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Reply via email to