Hallo John,

I agree with you, that the actual behavior is not what a user expect.
Just changing max_vel to "%-Slider" is unfortunately not enough, as also 
the GUI must be changed to support the new feature.

I from my side can tell that for gmoccapy the amount of work is doable.
I will be pleased to do that.

Norbert

Am 07.01.2017 um 09:42 schrieb John Morris:
> I've been asked about some seemingly unintuitive behavior:  the max
> velocity slider is not applied to rotary-only motion.  You can try this
> yourself by running the `axis_9axis.ini` config, setting the max
> velocity slider to zero, and noting rotary axes still move after e.g.
> `g0 a180 f40`.
>
> This can't be trivially fixed by applying the max velocity setting to
> rotary-only motion.  Back in 2007, Chris explained [1] (referring to a
> document still available from NIST [2]) that feed rate in units/minute
> can be unintuitive for rotary-only motion, since the units are degrees
> instead of inches or millimeters.
>
> Ok, so damned if we do, and damned if we don't; then what are the other
> options?  Axis has a couple of instructive examples:
>
> - The rapid override slider reads on a percentage scale, and the same
> slider does what one would expect, both for linear and rotary-only motion.
>
> - The jog speed slider reads in linear units/minute, and when a rotary
> axis is configured a second slider reading in degrees/minute appears.
>
> Right now, I'm leaning toward recommending the max velocity slider be
> changed to a percentage scale and applied to both, similar to rapid
> override.  I'd love to hear other opinions.  Thanks-
>
>       John
>
> [1]: https://sourceforge.net/p/emc/mailman/message/13618943/
> [2]: http://ws680.nist.gov/publication/get_pdf.cfm?pub_id=823374
>
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