I love the MV slider - use it all the time.  I need to know that 
feedrate because a lot of the time I am capping the velocity to the feed 
rate for testing (or just above)  I don't know the solution (as of right 
now I don't need to cap rotary only motion)  But the scaling of actual 
feed rate is a must for me.

sam

On 01/07/2017 04:16 AM, Niemand Sonst wrote:
> 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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