Cutter Comp Not Working - Fanuc 30i

[Bill H]

I'm working on a custom built mill-turn machine that's equipped with a Fanuc 30i control.  The axis of the milling head is along the X-axis of the lathe, so mill programming is in the G19 plane.  I cannot get the control to respond to cutter comp.  Regardless of what values I enter for tool radius (in either the Geometry or Wear registers), the machine follows the programmed path with no adjustment or deviation.  The control acknowledges that G41 (or G42) is active, but the cutting path remains the same.  Any ideas how to solve this?

[Newbeeee™]

As it's a custom built machine - it's probably a configuration issue with a parameter?

I'd check 1022 initially, and then the 5001 etc settings?