Siemens SINUMERIK 840D sl Programming Manual page 270

Special motion commands
4.2 Spline interpolation (ASPLINE, BSPLINE, CSPLINE, BAUTO, BNAT, BTAN, EAUTO, ENAT, ETAN, PW,
SD, PL)
Further information
Advantages of spline interpolation
By using spline interpolation, the following advantages can be obtained contrary to using
straight line blocks G01:
● 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
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between part program blocks.
Programming Manual, 06/2009, 6FC5398-2BP20-0BA0
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