Configures synchronized or mirror image control across separate paths. 3. Step-by-Step Parameter Modification Procedure
Unlike standard parameters (like 0000-0899) that control basic machine functions such as inch/metric mode or mirror image, the resides in a different tier of the control’s architecture.
The reason for this secrecy is simple:
Fanuc 9900 parameter series is a critical, often "hidden" set of configuration values used by Fanuc CNC controls (including the 16i, 18i, 21i, and 0i series) to enable or disable optional software features fanuc 9900 parameter list
The 9900 series varies slightly depending on the FANUC generation (Series 16i/18i, 21i, 30i/31i/32i), but generally covers three main areas: Initialization, Servo Tuning, and Spindle Configuration.
Memory corruption alarms or total loss of registered programs. OPT_BIT_MAPPED Internal Option Handshake Verification
If an incorrect edit is made to the 9900 parameter list, or if the control experiences a sudden backup battery failure, you may encounter specific system alarms: The reason for this secrecy is simple: Fanuc
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Touch probe software integration (G31 Skip function options). How to Access and View 9900 Parameters
Assigning axes and coordinate systems to multi-path lathes or mill-turn centers. This link or copies made by others cannot be deleted
You must purchase the option from FANUC, who will provide a "Software Option Information" sheet to allow changes to these parameters. 5. Summary and Best Practices
Software options are intellectual property. Activating options without a license from FANUC violates software agreements.