If you lose these parameters due to a dead motherboard battery (a common issue on 1990s and early 2000s machines), your machine becomes a brick. The only way to resurrect it is with the and a full backup.
This determines the type of sensor used for spindle orientation (e.g., magnetic sensor vs. proximity switch). 5. Displaying Parameters (31xx) fanuc 18m parameter manual pdf
Parameters 3100 and above often manage the screen display, such as enabling background editing or modifying how the diagnostic screens appear. 9000 Series System Parameters (Option Parameters) If you lose these parameters due to a