Re: EMC tuning question.

--- In CAD_CAM_EDM_DRO@y..., "jguenthe" <j.guenther@v...> wrote:

> DEFAULT_VELOCITY = 0.0167

This is only used to set the jog speed default (and maybe the default
speed if you say G1 and don't give an F parameter).

> MAX_VELOCITY = 0.2000

This varies depending upon the place it resides. In the individual
axis entries it limits the maximum rate for the axis. In the [TRAJ]
section it limits the maximum combined axis speed such that if you
are moving X at max and Y at max the result will be a diagonal with
the tip moving faster than the individual axis components. This
parameter in the [TRAJ] section should be higher than the max
individual setting.

> DEFAULT_ACCELERATON = 5.0

This is the acceleration parameter that is actually used as best as I
can follow. FOr a stepper 5.0 is high. I like to start low (.5 or so)
and move it up as I preceed. If you never hear the motors ramp up and
down (may be hard with a low max) it is probably set too aggressively.

> MAX_ACCELERATION = 5.0

If i remember correctly what Fred told me this is not used as there
are no G or M codes to tell EMC to alter the acceleration. It was put
in for robotics use. Fred's suggestion was to set it to the same
value as the default.


Tim
[Denver, CO]