Siemens SINUMERIK 828D

Special Motion Commands
4.5 Polynomial interpolation (POLY, POLYPATH, PO, PL)
Job planning
Programming Manual, 07/2010, 6FC5398-2BP40-0BA0
253
Example
Program code Comment
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 ; Polynomial interpolation on
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 ; Mixed data for the axes
N27 PO[X]=(10,2.5) PO[Y]=(2.3) ; No PL programmed; PL=1 applies
N30 G1 X… Y… Z. ; Polynomial interpolation off
…
Example: New polynomial syntax
Polynomial syntax that is still valid New polynomial syntax
PO[axis identifier]=(.. , ..) Axis identifier=PO(.. , ..)
PO[PHI]=(.. , ..) PHI=PO(.. , ..)
PO[PSI]=(.. , ..) PSI=PO(.. , ..)
PO[THT]=(.. , ..) THT=PO(.. , ..)
PO[]=(.. , ..) PO(.. , ..)
PO[variable]=IC(.. , ..) variable=PO 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