Siemens Sinumerik 840D sl Programming Manual page 264

Special Motion Commands
4.5 Polynomial interpolation (POLY, POLYPATH, PO, PL)
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: New polynomial syntax
Polynomial syntax that is still valid
PO[axis identifier]=(.. , ..)
PO[PHI]=(.. , ..)
PO[PSI]=(.. , ..)
PO[THT]=(.. , ..)
PO[]=(.. , ..)
PO[variable]=IC(.. , ..)
Example: Curve in the X/Y plane.
Programming
Program code
N9 X0 Y0 G90 F100
N10 POLY PO[Y]=(2) PO[X]=(4,0.25) PL=4
264
Comment
; Polynomial interpolation on
; Mixed data for the axes
; No PL programmed; PL=1 applies
; Polynomial interpolation off
New polynomial syntax
Axis identifier=PO(.. , ..)
PHI=PO(.. , ..)
PSI=PO(.. , ..)
THT=PO(.. , ..)
PO(.. , ..)
variable=PO IC(.. , ..)
Programming Manual, 02/2011, 6FC5398-2BP40-1BA0
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