Fanuc Ot 900 — Parameter List
(and all others) via RS232 to a PC, and print the 900 list on paper. Old Fanuc OT controls can’t be backed up with a USB stick.
The 900 series parameters (900–930 in most 0T-C systems) are that enable or disable specific hardware and software functions, such as: Canned Cycles (G71-G76) Constant Surface Speed (CSS) Custom Macro B Additional Axis Control Tool Life Management
If Parameter 901, Bit 0 controls "Constant Surface Speed," setting it to 1 will activate G96 on the lathe. How to Access and Change 900 Series Parameters
On certain FANUC 0T control screens, these values must be entered as a two-digit hexadecimal code rather than a string of ones and zeros. Binary to Hexadecimal Conversion Table 1000 0001 1001 0010 1010 0011 1011 0100 1100 0101 1101 0110 1110 0111 1111 fanuc ot 900 parameter list
Enables complex canned cycles (G71-G76). Parameter 902: Speed & Macro Control
In Fanuc controls, parameters are settings that configure the CNC's software to match the machine's hardware. While parameters in the 0–999 range typically govern general axis setup, PMC (Programmable Machine Control), and machine interface, the .
Modifying Fanuc 900-series parameters requires advanced knowledge of CNC systems. Improper changes can cause machine malfunction. Always record original values. (and all others) via RS232 to a PC,
The Fanuc OT (also written as Fanuc 0T) is one of the most iconic and widely used CNC controls for lathes and turning centers. Despite being introduced in the mid-1980s, thousands of machines worldwide still rely on this resilient, workhorse control.
| Bit | Function | |------|-----------| | 7 | DNC drip-feed baud rate override | | 6 | Remote buffer (32K) enable – required for complex programs | | 5 | High-speed serial (RS-422/RS-232C) | | 4 | Tape mode without parity check | | 3-0 | Communication protocol version |
Modifying parameters, especially 900-series options, can cause severe machine errors. Always take a photo or write down the original settings before changing anything. Accessing 900 Parameters How to Access and Change 900 Series Parameters
Colloquially known as the "900 Parameters," or the this list holds the keys to your machine’s capabilities. Unlike standard settings that control axis tuning or I/O configuration, the 900 parameters enable or disable purchased options —features like rigid tapping, macro programming, AI contour control, and additional axes.
If your machine has a small memory but a large program, check . If set to 0, change it to 1, and you can use Tape Mode with # or % for continuous RS-232 streaming.
10001000 (binary) = X axis present, Z axis present, no C, no 3rd axis, spindle type 0 (standard).
| Bit | Name | Function | | :--- | :--- | :--- | | 0 | MIN | Multiple repetitive cycles (G70-G76) – Standard on most, but can be disabled | | 1 | BCD | BCD/ Binary output (for custom PLC) | | 2 | PRF | Program format (FS10/11 format for macro) | | 3 | PRO | Program number search (Oxxxx search) | | 4 | BPT | Background edit (edit while running another program) | | 5 | EVS | Extended custom macro variables (#500–#999) | | 6 | CIX | Composite / canned cycle for X axis | | 7 | MAC | (G65, G66) – Essential for parametric programming |
Set (binary) or add 16 to existing value if using decimal.