| Parameter | Function | When Active | Typical Range | | :--- | :--- | :--- | :--- | | | Cutting feed ACC/DEC time constant | G01, G02, G03 | 20–200 ms | | 1620 | Rapid traverse (G00) ACC/DEC time constant | G00 | 50–500 ms | | 1622 | Rapid traverse DEC time constant (linear) | G00 (end of move) | 0 (off) to 500 ms | | 1825 | Servo loop gain (Position loop gain) | All motions | 30–200 (1/sec) |
Introduction In the world of Fanuc CNC controls, parameters are the silent architects of machine performance. They dictate everything from axis travel limits to servo response. Among the hundreds of critical parameters, Fanuc Parameter 1860 stands out as one of the most influential for machine dynamics, surface finish, and cycle time. fanuc parameter 1860 full
a (mm/s²) = Vc / T
Officially known as the (or sometimes referred to as the linear acceleration time constant for each axis), Parameter 1860 directly controls how aggressively your machine’s axes accelerate during a cutting feed move. Getting this value wrong can lead to servo lag alarms, poor corner finishes, or even mechanical damage. | Parameter | Function | When Active |