Re: Questions

Darrell Gehlsen wrote:

> From: "Darrell Gehlsen" <darrell@...>
>
> I am still working at getting EMC working on my computer and having some
> success at last.
> If I had it connected to a mill I could probably answer this my self but I'm
> not there yet.
> The question is when running EMC controling steppers do the axes ramp all
> the way down between each block of code on a feed move or is there a way
> that you can command the control to not ramp down in the case of say a
> linear move followed by a tangent arc followed by another linear move?
> Bridgeport had a Deceleration Override non modal G code to do this.
> My other question is can I download the archives from this group so I can
> read off line?

My comments are based on servos driven by EMC, but the code that handles
motion planning is the same. The default is that when one linear move is followed
by an orthogonal linear move, then when the first move begins to ramp velocity
down, the next move begins ramping velocity up. I'm sure you can control
this with parameters in the .ini file, but I think it has been decided that at some
point this should be controlled by a G-code. When the two moves are not
orthogonal, then the blending gets more complicated to describe.

Jon