On older FANUC controls (such as the FANUC 0, 16, 18, and 21 series), the directly represented software options enabled on the control. Each parameter contained a series of 8 bits (0 or 1).
9000-series parameters typically refer to high-level system option parameters (often ranging from 9900 to 9999) that enable or disable specific software features and control configurations. Because these settings can fundamentally alter machine behavior, they are often hidden or "locked" by machine tool builders (MTBs) to prevent accidental modification. Key 9000-Series Parameter Highlights
Fanuc 9000 series parameters (and often 9100-9999 depending on the model) are specialized settings that define the options installed on the CNC machine. Unlike standard user parameters ( ) that adjust backlash or acceleration, the
However, the power of the 9000-series parameters comes with significant risk and ethical considerations. Because these settings dictate the fundamental operating system of the control, they are typically "locked" or hidden behind a keep relay (often Keep Relay #9000 or similar) to prevent unauthorized access. Adjusting these parameters without the explicit documentation from the Machine Tool Builder or FANUC can render the control inoperable—a state often referred to as "bricking" the machine. Even more critically, these parameters can sometimes be used to bypass safety interlocks, which poses severe liability and safety risks. In the context of industrial machinery safety standards (such as ISO 13849), documenting and restricting access to these parameters is a requirement for maintaining a safe working environment. fanuc 9000 parameters list
Fanuc CNC systems utilize "9000 series" parameters primarily for two critical functions: and macro program protection . These parameters are often hidden or write-protected because they control core machine behaviors, such as tool changes, probing routines, and available software options. 1. Macro Program Protection & Visibility
In Fanuc CNC systems, "9000 parameters" typically refer to either the (numbered 9000–9999 in newer controls like Series 16i/18i/21i) or the 9000-series macro programs used for critical machine functions like tool changes and probing . Common 9000-Series Parameters
Before you can view the list, you must bypass FANUC’s security. Here is the standard procedure: On older FANUC controls (such as the FANUC
Fanuc 9000-series parameters are critical system settings that control advanced CNC functionalities, memory options, and program protection. These parameters are often considered "hidden" or "option" parameters because they enable high-level features like rigid tapping, helical interpolation, and custom macros. Understanding Fanuc 9000-Series Parameters
Turn the mode selector switch to .
What or macro issue you are trying to resolve you must bypass FANUC’s security.
On most controls, no – they are hidden until PWE=1. On 30i series, you may need a level 3 or 5 password.
To view or change these parameters (if you have the correct authorization), you must be in the and set your Parameter Write Enable (PWE) to 1. Press the [OFFSET] or [SETTING] button. Press the [SETTING] soft key. Change PARAMETER WRITE to 1 . Press [PARAM] button. Type 9000 and press [NO.] to navigate to the 9000s.
Incorrect values can cause the CNC boot loop or freeze.