On Fri, May 06, 2011 at 09:52:33AM -0600, James Cizek wrote:
> 
> Is there anyway a HAL command can cause EMC to ignore the MAX VELOCITY
> setting found in the .ini file?
> Because this is exactly what is happening.

If I understand your setup correctly, Z is not controlled exclusively
by EMC.  Z's stepgen is controlled by some complex logic set up in
HAL.  I see stepgen.2.maxaccel is set from the value in the ini file,
but I don't see where stepgen.2's max velocity is set.  Also I don't
see any limit blocks limiting the derivatives of stepgen.2's input.
So I guess my question back to you is: where do you think the velocity
is being limited while this HAL stuff is moving Z around?  Maybe I
have missed it.  Without a picture or overview, it's really hard to
understand what those 56 (!!) hal components are doing.

> Everyone I have talked to on all the forums or in person seems to think that
> this is impossible and that it should always obey the .ini file.   

I suspect they haven't looked at your setup at all, then.  If EMC was
controlling your Z exclusively (direct connection from axis.N to the
stepgen), they would be right.


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