Fanuc Ot Reference Parameter Better !!better!! π π
: Define the stored stroke limits (soft limits). These must be set relative to a correctly established reference position to protect the machine from over-travel.
The Fanuc 0-T uses specific parameters to define how it returns to the zero (reference) position: Parameter No. Description Absolute Pulse Coder fanuc ot reference parameter better
These are vital for maintaining part tolerance. Parameter 1851 manages backlash for slow motion, while 1852 handles fast motion. The unit is typically 0.001mm. : Define the stored stroke limits (soft limits)
| Problem | Typical Cause | "Better" Solution | | :--- | :--- | :--- | | | Ref point set too far positive on Z | Set Ref point 3mm inside soft limit | | Turrets indexes at wrong height | Grid shift (Param 0010) is corrupted | Use Diagnostic 300 to reset to known value | | Slow homing speed | Decel feedrate (P700) is too low | Increase to 200-300, but decrease approach speed | | Inconsistent home position (Β±5 microns) | Dirty limit switch or cable noise | Clean the switch; DECEL feedrate is too high | Description Absolute Pulse Coder These are vital for
Options like Constant Surface Speed (CSS) or spindle speed fluctuation detection are often toggled here to improve tool life and finish quality. Fanuc O-T Parameter List Overview | PDF - Scribd
If the machine leaves "grooves" or marks during constant surface speed cycles (G96), the servo loop gains may require tuning.
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