Detailed Description   
2.4 Tool: Tool radius compensation 2D (TRC) 
  Tool Compensation (W1) 
2-46  Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0 
 
 
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Fig. 2-18  Differences between KONTT and KONTC 
 
 
Note 
The figure shows that a straight line bordering on the contour quadrant, e.g., to X20 Y-20, 
would be violated with KONTC on retraction/approach to X0, Y0. 
 
2.4.4  Smooth approach and retraction  
Meaning 
The SAR (Smooth Approach and Retraction) function is used to achieve a tangential 
approach to the start point of a contour, regardless of the position of the start point. 
The approach behavior can be varied and adapted to special needs using a range of 
additional parameters. 
The two functions, smooth approach and smooth retraction, are largely symmetrical. The 
following section is, therefore, restricted to a detailed description of approach; special 
reference is made to differences affecting retraction.