On 27 December 2011 18:38, Rudy du Preez <r...@asmsa.co.za> wrote:

> I want to be able to use offsets of C (and possibly A) while in world mode.
> Whereas it works OK in joint coordinates with trivkins, it seems to function
> differently in world mode using XYZCkins

What does XYZCkins do that trivkins doesn't? Is it creating a virtual
C-axis, or do you have a physical one?
I assume by your statement that you see a rotation in your example in
trivkins that you are talking about a physical C-axis?

I am nowhere near my EMC2 machines until the 3rd, so this is conjecture but:

I am fairly sure that coordinate system offsets are stored as an axis
set, not a joint set. If you can run a non-trivial mechanism with
cartesian offsets then that suggests that all the numbers inside the
kins module are un-offset machine coordinates, and that G54 et al are
added on post-kins. (and subtracted in the inverse kins). This may
have a bearing on your assumptions.

-- 
atp
The idea that there is no such thing as objective truth is, quite simply, wrong.

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