Some options are encoded in a checksum block (4000-4999 range) or locked by Fanuc’s "Option Key" system (requires paid license).
Most 9000 parameters are , meaning they are displayed as a binary or hexadecimal value. For example, parameter 9000 might look like this on the screen: fanuc 9000 parameters list
(O9000–O9999), which are macros for critical tasks like tool changes (M6) or probing cycles. CNC Training Centre Protect/Unprotect Programs Parameter 3202 to manage these. Set bit 4 (NE9) to edit or view 9000-series programs, and to lock them. Enable Editing Some options are encoded in a checksum block