These settings are used to define the displacement and size of the spindle probe. These four settings specify the travel distance and direction from where the probe is triggered to where the actual sensed surface is lo- cated. These settings are used by G31, G36, G136, and M75 codes. The values entered for each setting can be either positive or negative numbers.
Macros can be used to access these settings, see the Macro section for more information.