Fanuc Parameter 1829 ❲LIMITED❳

Fanuc Parameter 1829 defines the Positioning Deviation Limit for each axis in the stopped state. It serves as a safety threshold to ensure that a stationary axis does not drift beyond a specific tolerance due to external forces or mechanical issues. Core Function

Excessive friction from worn ways or bearings that the motor can't overcome to maintain position Servo Tuning Issues: fanuc parameter 1829

4. Typical Values

• Standard Setting: A typical value is often around 10 to 50 (representing 0.01mm to 0.05mm).
• High Precision: For high-precision grinding or finishing, this number might be set lower (e.g., 5 or 10).
• Large Machines: For large gantry routers or machines with heavy slides, the value might be higher (e.g., 100) to prevent the machine from hanging up while trying to settle perfectly.

When an axis is stationary, the CNC control continuously monitors the difference between the "commanded" position and the "actual" position reported by the encoder. Fanuc Parameter 1829 defines the Positioning Deviation Limit

Why is FANUC Parameter 1829 Important?