Viesturs La-cis wrote:
>
> I am convinced that many of EMC users have hardware that cannot be
> considered as opensource. Including my ServoStar 601 servo amps.
> My personal feeling (not supported with any facts, numbers or other
> data) is that also Mesa or Pico Systems products contain some
> proprietary components.
> So I do not see a problem here - if that solution is working and
> delivering expected performance, then I consider the price to make
> decision.
> EMC is meant to be smart CNC controller to work on simple,
> not-that-smart ("dumb") hardware, so
> I think it is acceptable to have proprietary elements in hardware as
> long as it is fully configurable to fit each particular machine and
> situation.
>
Well, I don't make you sign a license to use my servo amps. With this
scheme, any time you wanted to recompile the rest of the FPGA code, you
would need to invoke the etherCat license in some manner to include the
IP in the FPGA.
That could be worrisome the way companies come and go. If they went out
of business or just decided to dump the product, you might not be able
to compile it again (I have no idea how their IP protection works.)
So, that's the issue, I think, is that this IP licensing is a lot more
like software in a way, and not like hardware that just sits there
taking signals and driving motors, for instance.
Jon
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