Path traversing behavior
8.2 Feedrate response (FNORM, FLIN, FCUB, FPO)
Job planning
462 Programming Manual, 07/2010, 6FC5398-2BP40-0BA0
F=FPO(…,…,…)
The feed 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: Feed 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.
)HHG
3DWK
Restrictions
The functions for programming the path traversing characteristics apply regardless of the
programmed feed characteristic.
The programmed feed characteristic is always absolute regardless of
G90 or G91.
Feed response FLIN and FCUB are active with
G93 and G94.
FLIN and FCUB is not active with
G95, G96/G961 and G97/G971.
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