In Fanuc CNC systems (such as 16i, 18i, 21i, and 0i series), the 9900 series parameters are designated as Option Parameters. These control the activation of specific software features and hardware functions that are typically sold as add-on options by Fanuc. Overview of Fanuc 9900 Option Parameters
FANUC CNC systems utilize parameters to define machine behavior, from servo gain to I/O assignments. Parameters 9900–9999 are distinct: they are hardware and software configuration parameters set at the machine tool builder (MTB) level. Unauthorized or incorrect changes to these values can disable the CNC, corrupt the PMC (Programmable Machine Controller), or render the machine inoperable. fanuc 9900 parameter list
Step-by-step (typical Fanuc 0i/16i/18i): In Fanuc CNC systems (such as 16i, 18i,
Graphics display, Conversational programming (Manual Guide i), Background editing How to Access and Edit (General Procedure) Introduction FANUC CNC systems utilize parameters to define
Do not treat the 9900 list as a troubleshooting playground.