Siemens sinumerik 840d Programming Manual page 164

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Special Motion Commands

5.4 Polynomial interpolation, POLY

Polynomial interpolation belongs to the first G group

along with G0, G1, G2, G3, A spline, B spline and C

spline. If it is active, there is no need to program the

polynomial syntax: Axes that are programmed with

their name and end point only are traversed linearly

to their end point. If all axes are programmed in this

manner, the control system responds as if G1 were

Polynomial interpolation is deactivated by another

command in the G group (e.g. G0, G1).

Polynomial coefficient

The PO value (PO[]=) specifies all polynomial

coefficients for an axis. Several values, separated by

commas, are specified according to the degree of

the polynomial. Different polynomial degrees can be

programmed for different axes within one block.

SINUMERIK 840D/840Di/810D/FM-NC Programming Guide Advanced (PGA) − 04.00 Edition

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