does linuxcnc have joint interpolation inside?

thang wrote: It's much faster. In pick and place applications, they dont require so many linear and circle motions so joints can run at max velocity.

Are you sure about that? In coordinated mode during a rapid the speed will be limited by the most limiting joint. And there is no advantage in letting the other joints get to position faster, as they still have to wait for the limiting joint to finish.

You can probably move one joint at a time, in joint mode, through a defined distance, with the Python interface jog command.
linuxcnc.org/docs/devel/html/config/pyth..._linuxcnc_command_tt

Whether you have to wait for that to finish before moving another joint I don't know.

That isnt true, In coordinate mode, speed is limited by Axis velocity 1st, Axis and joint velocity are same only when we use trivkins (linuxcn 2.8pre).

I haven't experimented with whether joint velocity limits take over if the axis limits are set very large.

But in 2,8 I think that might be the case. (But then you might have looked, and I haven't)

i have tried it long time ago, if my memory isnt bad, the "following error" will occur when axis velocity limits set enough large.

F-Error is a different thing.

And if you tried it "a long time ago" then that might well have been before the Joints-Axes merge?

This is one of your issues:
github.com/LinuxCNC/linuxcnc/issues/97

I dont know any way of controlling joints from gcode...