feedrate values programmed non-modally that have an active FCUB. The feedrate values act
here as interpolation points for calculation of the spline interpolation.
Example:
N50 F1400 FCUB X50
N60 F2000 X47
N70 F3800 X52
F=FPO(…,…,…)
The feedrate characteristic is programmed directly via a polynomial. The polynomial
coefficients are specified according to the same method used for polynomial interpolation.
Example:
F=FPO(endfeed, quadf, cubf)
endfeed, quadf and cubf are previously defined variables.
endfeed: Feedrate at block end
quadf: Quadratic polynomial coefficient
cubf: Cubic polynomial coefficient
With an active FCUB, the spline is linked tangentially to the characteristic defined via FPO at
the block beginning and block end.
Work preparation
3.14 Path traversing behavior
NC programming
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0 837
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