Always write down the original hexadecimal or binary value before typing over a 9900 parameter.
| Feature | Description | | :--- | :--- | | | Typically 9900 to 9999 (some models extend to 9900–9999) | | Visibility | Not visible via normal parameter screens (requires special procedures) | | Modification | Requires disabling parameter write protection (PWE = 1) and often a manufacturer password | | Storage | Stored in SRAM; cleared by certain types of memory all-clear operations | | Risk Level | Extreme – incorrect values can cause “0D” or “0T” alarms, boot failures | fanuc 9900 parameter list
The Fanuc 9900 series parameters are primarily used for Option Parameters Always write down the original hexadecimal or binary
Enabling advanced programming flexibility, such as , interrupt functions, and specialized communication protocols (Ethernet/IP, Profibus, or FL-net configurations), relies on setting these parameters. How to View and Backup 9900 Parameters and specialized communication protocols (Ethernet/IP