Hi Hood,

You are really digging into it i see, thanks a lot.
I don't have  brains running.
The macropump i programmed myself, I'm sure i did not program movements in it, but maybe something triggers it.
What i find strange is that the A-move is synchronised with the finishing of the interrupted move of the other axis.
To make this happen there should be some intelligent programming involved which certainly wasn't me  
I will test what it does without macro and plug-in as soon as the axis is free again.

Regards
David

I hate it when this happens
I wanted to test if it was the macro or plug-in and now i can not reproduce the problem anymore.
I didn't turn off anything yet and used the same test file but the 4th axis does not rotate anymore like before.
Nice if it is gone, but will it return and when and i still don't know what caused it.
For now i think i will remain very cautious using the feedhold.
Many thanks to those who tried to find a cause / solution.
If the problem reappears I hopfully find what triggers it too.

Regards David 

I have the same problem on 6 different milling machines.
When i push on feedhold and make a restart the 4th axis is running.

The problem only appears  when i make a feedhold when the z-axis is moving.

A bug maybe?