Machine has been and running great with 4th axis. Turned it on today and I get incremental movement on the a (4th) axis. I give it a a command and the rotary head doesn't have a fluid movement to that position, just a jerky move a couple of degrees, dead stop, repeat until A position reached. Even in G1. I don't remember changing any parameters.
Any Help?
i_r_

If you attach your xml I will look see if there is a problem with it. Do the DROs show the jerky movement?
Hood

Yes,
The control seems to be sending out pulses of movements. I can manually move the a axis and it is as smooth as butter. This just started. Do I just search for a .xml file?
thanks
Kerry

Open Mach and look lower right for the name of the profile you are using then look in the mach folder for a file of that name with an xml extension.
Hood

Lets see if this works.

Try setting your kernel to 25KHz and restart Mach and see if that helps.
Hood

Thanks Hood!
That did it.
have fun
i_r_