John Prentice wrote:
Could be some misunderstanding here. I will contact you off-list about your
experience with moderation but it is very strange that you were removed from
the Mach1Mach2CNC Yahoo! list for asking about APIs etc. To my knowledge, as
a moderator for more than 3 years, only a very few spammers have ever been
removed.
The driver for the G100 has evolved over several iterations but at all times
the source of it has been publically available.
Although it would be a daunting task to emulate a G100, drivers do also
exist for ncPod (http://ncpod.oemtech.com/) and Galil controllers and Art
Fenerty will support anyone wanting to add a controller. Of course, how
technically satisfactory this would be depends on the match of Mach3
architecture with the interface to the motion controller.
Well, I tried to get Art to support, or help ME support my PPMC
line of servo controllers under Machx. He declined to do
anything on it, after sounding enthusiastic for a short while.
The major problem is my controllers don't have intelligence,
need the PC to close the servo loop, and have no buffering of
commands. His big complaint is that floating point calculation
would be needed in the real time interrupt service
environment. (I agree that F.P. would be a better way to go,
but historical CNC controls have done the servo loop with fixed
point calculation.)
Finally, a personal observation. The division of intelligence between the
user machine and a controller is a particularly challenging problem
because of the conflicting needs to lookahead and buffer motion to provide
responsive jogging and feed-hold. Doing as much in one place (e.g. the PC)
has a lot of attractions!
Yes, I certainly agree. It makes monitoring and setup a lot
easier, and you can have the PC report the servo performance
anytime you think something might be wrong. No need to change
cables, download firmware or anything.
Jon
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