Special Motion Commands   
5.2 Spline interpolation (ASPLINE, BSPLINE, CSPLINE, BAUTO, BNAT, BTAN) 
  Job planning 
5-4  Programming Manual, 03/2006 Edition, 6FC5398-2BP10-1BA0 
Parameters 
 
ASPLINE  The Akima spline passes as tangent through the intermediate 
points. 
BSPLINE  The B spline does not pass directly through the control points 
but only near them. The programmed positions are not 
interpolation points but only control points.  
CSPLINE  Cubic spline with transitions to the interpolation points both 
tangentially and in terms of curvature. 
A, B and C splines are modally active and belong to the group of motion commands.  
The tool radius offset may be used.  
Collision monitoring is carried out in the projection in the plane. 
 
 
Note 
Parameters for A-SPLINE and C-SPLINE 
For the Akima spline (A spline) and the Cubic spline (C spline), restrictions for the transition 
behavior at the start and the end of the spline curve can be programmed. 
These restrictions for the transition behavior are divided into two groups with statements 
each with three commands as follows: 
 
 
 
Start of spline curve: 
BAUTO  No command input; start is determined by the position of the 
first point 
BNAT Zero curvature 
BTAN  Tangential transition to preceding block (initial setting) 
End of spline curve: 
EAUTO  No command input; end is determined by the position of the 
last point 
ENAT Zero curvature 
ETAN  Tangential transition to next block (initial setting)