Programming and Operating Manual (Milling) 
102  6FC5398-4DP10-0BA1, 01/2014 
Also check over multiple blocks that the contour contains no "bottlenecks". 
When carrying out a test/dry run, use the largest tool radius you are offered. 
If very sharp outside corners occur in the contour with active G451 intersection, the control system automatically switches to 
transition circle. This prevents long idle motions. 
 
Example of tool radius compensation 
See the following illustration for example of tool radius compensation: 
 
; Approach starting point 
N10 G41 G450 X30 Y60 F400 
; Compensation to the left of the contour, transition circle 
; Terminate compensation mode