On 11/22/2014 10:34 AM, Jeff Johnson wrote:
>>> I have been experimenting with the JWP from Machinekit in LinuxCNC.
>>>
>>> On the stock LinuxCNC 2.6.4 source in git I downloaded
>>> https://github.com/mhaberler/machinekit/commit/6b0aaf39b81cc6507de41b5a
>>> 74a6b0414744ea38.patch And applied it with git am -3 <
>>> 6b0aaf39b81cc6507de41b5a74a6b0414744ea38.patch
>>>
>>> Then recompiled.
>>>
>>> Then in a lathe config, by setting the new hal-pins
>>> motion.pause-offset-x 1
>>> motion.pause-offset-x 1
>> Looks like the above line should have said z, not x ;-)
>>
>>> motion.pause-jog-feed 1
>>> motion.pause-offet-enable 1
>>>
>>> I get the behaviour shown here:
>>>
>>> http://youtu.be/mSx2zIUWVzQ
> I would like to see keyboard or jog wheel control only because tools like
> boring bars and face groovers will need completely different retract
> schemes. I know it goes back to the "ice water in hell" statement. I am
> hoping something reasonable is found and I will test. We are doing our first
> mill retrofit and I believe that the ability to stop, turn spindle and
> coolant off, move work out of the way of the tool to check something and
> return to the cut is mandatory. I understand If I want it badly enough I
> better learn the ability to code (not going to happen) and I do appreciate
> the people who contribute to this project but I am starting to think that
> the people running larger work and longer programs will get to the point
> that restarting the program even if you use run from line (mistakes are
> made) will become too cumbersome to overcome.  Nobody forced me down the
> path of LCNC and it has been fun Three turning centers making parts is a
> bonus but we are losing tremendous amounts of time on larger parts because
> of this missing feature.
>
> I will be trying the patches if we can figure out how to apply them
> LOL.......We are not Linus experts either.
>
> Jeff Johnson
> john...@superiorroll.com
> Superior Roll & Turning
> 734-279-1831
> sers

No matter how "jog while paused" is implemented there will always be 
ways to screw things up,  bust off cutters, and ruin workpieces. It will 
happen even if the machine is being run via Fanuc.

But that doesn't mean that LinuxCNC should not have one or more 
solutions for jog while paused.

This just goes back to the operator knowing the machine and how it 
works.    If the jog while paused solution doesn't work for face 
grooving, you will discover that in short order.
In the meantime you can still enjoy swapping inserts in the middle of 
long hard cuts without restarting the move all over again via a run from 
line!

Right now we have nothing.   Anything is better than nothing.

Unless of course.... someone has something that is better than this 
patch.  :-)

Dave




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