Fanuc 9900 Parameter List | ~repack~

They control how axes interact when executing synchronized waiting codes (M-codes).

Detailed lists for specific control models are often found in official , such as: fanuc parameter detail 9900 to 9998 | Practical Machinist

The 9000 series parameters, including and especially the 9900 range, are known by several names: "Option Parameters," "Function Parameters," or "Secret Parameters." Unlike standard parameters, these are not documented in the standard manuals provided with a machine tool. This is because their values directly activate specific, purchasable software functions and define the basic hardware configuration of the control, such as the number of axes.

: Because these represent paid options, they are typically protected. Changing them incorrectly can lead to machine malfunction or "unpredictable movement". Common 9900 Series Parameters & Options fanuc 9900 parameter list

Often dictates base control path configuration and basic interpolation options.

A machine tool builder sets:

The Fanuc 9900 parameter list is the "brain stem" of the CNC control. It is powerful, essential, and dangerous. They control how axes interact when executing synchronized

: These are often bit-based parameters where each individual bit (0–7) corresponds to a different feature. : On controls newer than mid-2006, these are stored in Flash ROM (FROM)

There is a common misconception that you can use the 9900 list to "hack" options onto your machine for free. While the internet is full of "9900 option lists,"

If you need to unlock a specific feature or clear a hardware alarm, let me know: Your (e.g., 18i-MB, 0i-TF, or 16M) The exact alarm code you are seeing : Because these represent paid options, they are

Program restart, 3rd/4th reference point return, High-speed cycles. Specialized Features

For most day-to-day machining, you will never need to touch the 9900 series. But understanding that they exist to configure the hardware and software options of your machine is a vital part of advanced CNC maintenance knowledge.

: Often hidden from the standard parameter screen. They are frequently found in the Diagnostic screen or require a specific Fanuc "EZOPT" file to modify. Older Controls : May be viewable in the standard parameter list if Parameter Write Enable (PWE) is set to 1. Google Groups 4. Critical Warnings