Depending on how the probing software is installed on your machine tool the output for the postition may vary. Either the active work offset or machin home. You will need to do some testing to find out what settings you have.
John Joyce, Manufacturing Engineer, Senior Aerospace
NX 126.96.36.199 Vericut 8.0.3 - Statements and opinions are mine alone and do not reflect the opinion of my employer or any other member of the human race