Special Motion Commands
4.2 Spline interpolation (ASPLINE, BSPLINE, CSPLINE, BAUTO, BNAT, BTAN, EAUTO, ENAT,
ETAN, PW, SD, PL)
Job planning
Programming Manual, 07/2010, 6FC5398-2BP40-0BA0
241
Properties and use of the various spline types
Spline type Properties and use
A spline
3
3
3
3
3
3
3
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$VSOLQHDNLPDVSOLQH
Properties:
• The passes precisely through the specified intermediate points along the
curve.
• The curve characteristic is tangential, but does not have continuous
curvature.
• Produces hardly any undesirable oscillations.
• The area of influence of changes to intermediate points along the curve is
local. This means that a change to an intermediate point along the curve only
affects up to max. 6 adjacent intermediate points.
Application:
The A spline is especially suitable for interpolating curves with large changes in
the gradient (e.g. staircase-type curves and characteristics).
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