Fanuc 9900 Parameter List File

Follow this procedure carefully. The exact steps vary slightly by Fanuc model (Series 15 vs. 31i), but the logic is consistent.

This block defines:

When is it actually appropriate to use this list? fanuc 9900 parameter list

A machine tool builder sets:

After changing these, the servo amplifier for axis 4 must be physically present and parameter 202x (servo number) correctly set. Failure to match hardware results in “SERVO ALARM: AXIS 4 NOT READY”. Follow this procedure carefully

Unlike other parameters, the 9900 series is not typically listed in the standard "Parameter Manual" provided by Fanuc. Instead, these settings are usually documented in the Machine Tool Builder’s Manual (e.g., Makino, Mori Seiki, Haas, etc.).

The reason for this secrecy is simple: Risk. A machine tool builder sets:

If you change a standard parameter incorrectly, you might get an alarm or a crash. If you change a 9900 parameter incorrectly, you can instantly disable the control, make the screen go blank, or wipe out critical system options. Because these parameters configure the core hardware communication, the control may not even know how to boot up properly if they are altered.