Re: [CAD_CAM_EDM_DRO] Re: PWM vs Constant current and G-rex

Jarret,

There are basically two higher end parallel port breakout boards available that I know of. The Sound logic and the PMDX for use with Windows based Mach softwares. Then there are some less expensive alternatives as well. As with anything, price dictates functionality and features. The breakout board is a must as it really "ties" the whole system together and allows the user to take advantage of everything the softwares have to offer. Plus they provide (if equipped) opto-isolation on the inputs to protect the PC, Onboard relays, integrated charge pump circuits etc.

Ron

Jarrett & Heidi Johnson <hjjohnson@...> wrote:
Thanks for the reply Ron, I'm wondering what parrallel driven breakout board
are you using? Good/bad experiances?? Advice? I'm concerned about
purchasing a system that needs to be used on a yet to be released software
verson thats for sure. I'm also thinking that there is a wealth of
experiance that could be tapped for use of a parrallel drive board.

Jarrett Johnson

>
> /////Not mine.... Who knows? I may want to run another drive type with
> higher voltage abilities. This new system looks proprietary. Don't get me
> wrong though, I'm sure it's a very good system. But, everyone is acting
> like all of our CNC problems are over now and there isn't even a working
> system. I'm sure it will have it's growing pains also.
>
>
>
> All I see that is missing is a 7th encoder input. one for the pendant
> jog unit. but, I would bet that can be handled quite simply.
>
>
>
> //// What I see missing is the flexibility to use different components.
> Not every machine is setup exactly the same.
>
>
>
> This bit about the parallel port disappearing I question. I've bought two
> new PC's this year and they have PCI parallel port cards in them. There
> are way too many plotters etc. around for the parallel port to just
> suddenly disappear. That was said about the 5" floppy drive, it can still
> be added as an option by PC builders.
>
>
>
> Ron

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