In the world of FANUC 0T controls, fine-tuning your home position isn't done by physically moving massive switches. It is done digitally using the Grid Shift parameter
Write down the original values before changing anything . These parameters are often password-locked by the MTB (Machine Tool Builder).
For a Fanuc 0T control, improving or resetting the reference (home) position involves adjusting specific parameters that manage axis movement and grid alignment. Key Reference Point Parameters
The 900-series parameters are "bits" that enable specific machine features. These are typically provided by the machine tool builder (MTB) and must be backed up, as losing them can disable entire functions.