Re: [CAD_CAM_EDM_DRO] black box specs was Re: interpolation and algorithms of multiple axes

Jon,

Congratulations on being the first flaming arrow archer.

I've been designing PC interfaces for years and I'm not convinced any of
them are all that deterministic.

I am thinking in terms of only the control PC and the motion box on the
"network". Also there would be no real reason to run a full TCP/IP stack
on this so a lot of the other noise could go away.

Yes, this is a very half baked idea.

Jeff

On Thu, 07 Dec 2000 18:06:28 -0600, you wrote:

>
>
>Ugh! Ethernet is specifically designed to almost NEVER be deterministic.
>For the most part, it is fast enough that if you coordinated the message flow,
>and only had the control PC and the motion box there, it probably would
>work. Even still, there would be network management software that
>would be sending out multicasts saying "I'm so-and-so, and I'm here!"
>every second or so, and that would cause an occasional collision.
>
>Jon
>