Obróbka zgrubna-ostatnia zakładka-max głębokość.

Z pomocy edgecama niestety po ang

Specifies the maximum distance in the Z-axis that the tool can plunge feed. The value will be used to check that the ramp move does not exceed this value. The maximum plunge is assumed to be equal to the Cut Increment when modifier is left blank.

Nie znam ang technicznego tak więc nie będę tłumaczył

!!!! If Maximum Plunge Depth is set to 0 the tool cannot plunge or ramp. Therefore, the cycle can only machine external areas or pocket areas that have pre-drilled holes. !!!!