Siemens SINUMERIK 840D sl Programming Manual page 283

The programmed polynomials are also interpolated as polynomials as standard for both axis
groups.
Examples:
POLYPATH("VECT")
Only the orientation axes are selected for polynomial interpolation - all other axes traverse
linearly.
POLYPATH ( )
Deactivates polynomial interpolation for all axes
Example
Program code
N10 G1 X... Y... Z... F600
N11 POLY PO[X]=(1,2.5,0.7) PO[Y]=(0.3,1,3.2) PL=1.5
N12 PO[X]=(0,2.5,1.7) PO[Y]=(2.3,1.7) PL=3
...
N20 M8 H126 ...
N25 X70 PO[Y]=(9.3,1,7.67) PL=5
N27 PO[X]=(10,2.5) PO[Y]=(2.3)
N30 G1 X... Y... Z.
...
Example: Applicable polynomial syntax with PO
Previous polynomial syntax remains valid
PO[axis identifier]=(.. , ..)
PO[PHI]=(.. , ..)
PO[PSI]=(.. , ..)
PO[THT]=(.. , ..)
PO[]=(.. , ..)
PO[variable]=IC(.. , ..)
Job Planning
Programming Manual, 06/2009, 6FC5398-2BP20-0BA0
4.5 Polynomial interpolation (POLY, POLYPATH, PO, PL)
Comments
; Polynomial interpolation on
; Mixed data for the axes
; No PL programmed; PL=1 applies
; Polynomial interpolation off
New polynomial syntax (from SW 6)
Axis identifier=PO(.. , ..)
PHI=PO(.. , ..)
PSI=PO(.. , ..)
THT=PO(.. , ..)
PO(.. , ..)
variable=PO IC(.. , ..)
Special motion commands
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