Siemens SINUMERIK 828D Programming Manual page 240

Special Motion Commands
4.2 Spline interpolation (ASPLINE, BSPLINE, CSPLINE, BAUTO, BNAT, BTAN, EAUTO, ENAT, ETAN, PW,
SD, PL)
In addition to the spline curve, resulting from the example program (ASPLINE), the following
diagram also contains the spline curves that would have been obtained when activating
either B or C spline interpolation (BSPLINE, CSPLINE):
Further Information
Advantages of spline interpolation
By using spline interpolation, the following advantages can be obtained contrary to using
straight line blocks
● The number of part program blocks required to describe the contour are reduced
● Soft, curve characteristics that reduce the stress on the mechanical system at transitions
240
:
G01
between part program blocks.
Programming Manual, 07/2010, 6FC5398-2BP40-0BA0
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