Feeler machine U250 5-axis machine FANUC G68.2 function milling compensation setting in Z-axis 

Feeler machine U250 5-axis machine FANUC G68.2 function, if machine cutting show the dimension error when A-axis rotates to 90-degree that can refer to the video setting to get the correct dimension.
Change the Z-axis rotary center position (P19702) that 90-degree cutting dimensions will be changed in Z-axis and Y-axis position.