Use the Work Offset Coordinates dialog to view or enter the work coordinates for your current Face window.
To display this dialog, click the Work Offsets 
button on the Setup dialog.
Note: This option is available only if you have a Standard, Tombstone, or Rotary 5 Axis table selected, with a Mill XY, Mill 4 Axis, Mill 5 Axis, Mill End,Index, or Mill End,Polar face.
Work Offset — This value is for information only. Its value is taken from the Work Offset field on the Setup dialog.
Px, Py, Pz — These work coordinates represent the distance from the origin of the Global Coordinate system to the origin of the local coordinate system for the selected Face window.