[mactec54]

See that is where the disagreement is. Everybody else and all my testing says that any standard controller should be able to perform this operation.

My controller does support R but it does the exact same thing as using I/J and K. The actual problem is that the arc end point is Z compensated for tool length, but the center point is not.

Everybody else has not done on your machine and using your control, what you wanted to do which is non standard for your machine

The Z is not compensated and there is no way to do that on your control