If you accidentally toggle a bit in the 9900 range that disables your axis communication, you cannot simply "undo" it. You may need to perform a full system restore from a backup memory card or floppy disk to get the machine running again.
Constant Surface Speed Control (G96), Tool Life Management, Macro B, Rigid Tapping
Based on typical Fanuc configurations, the bits for parameter 9900 often control foundational G-code and hardware behaviors: Canned Cycles Bit 1: G10 Program Input of Offset Bit 2: Mechanical Handle Feed Bit 3: Manual One Pulse Generator Control Bit 5: Inch / Metric Conversion Bit 6: Special G-Code Security and Access fanuc 9900 parameter list
FANUC parameters are generally organized by function. To understand where the 9900 series fits, look at the standard memory map:
⚠️ : Do not attempt to guess passwords. Consult your machine manual or Fanuc representative. If you accidentally toggle a bit in the
Configures analog spindle control signals. 5 00100000
To view the 9900 parameter list on your FANUC control, you must place the machine in a state that allows system parameter viewing. Select on your operator panel. Press the OFFSET/SETTING key. Press the SETTING softkey. To understand where the 9900 series fits, look
Defines the active input/output device channel (e.g., 0 for RS-232 serial port 1, 4 for Flash Memory Card, 5 for Data Server).
| Bit | Option Enabled | |------|----------------| | #0 | High-speed machining (AICC) | | #1 | Manual guide i (conversational programming) | | #2 | Helical interpolation | | #3 | Thread retract | | #4 | Tool life management | | #5 | Cylindrical interpolation | | #6 | Polar coordinate interpolation | | #7 | Scaling |
Fanuc does not publish a universal 9900 list because . To get the exact list for your machine: