Siemens SINUMERIK 828D Programming Manual page 256

Special Motion Commands
4.5 Polynomial interpolation (POLY, POLYPATH, PO, PL)
X(p) and Y(p) are calculated as follows from the programmed values:
As a result of the programmed start points, end points, coefficient a
intermediate results are as follows:
If polynomial interpolation is active and a denominator polynomial is programmed with zeros
within the interval
have no effect on the motion of special axes.
Note
Tool radius compensation can be activated with
interpolation and can be applied in the same way as in linear or circular interpolation modes.
256
X(p) = (10 - 10 * p ) / (1 + p
2
Y(p) = 20 * p / (1 + p )
2
with 0 ≤ p ≤ 1
Numerator (X) =
Numerator (Y) =
Denominator =
, this is rejected and an alarm is output. Denominator polynomials
[0,PL]
)
2
10 + 0 * p - 10 * p
2
0 + 20 * p + 0 * p
2
1 + p
2
,
G41
Programming Manual, 07/2010, 6FC5398-2BP40-0BA0
and PL=1, the
2
in conjunction with polynomial
G42
Job planning