Siemens SINUMERIK 840Di sl Programming Manual page 364

Tool offsets
8.10 Compensation at the outside corners (G450, G451)
Corner behavior, transition circle, G41, G42, G450
The tool center point travels around the workpiece corner across an arc with tool radius.
At intermediate point P*, the control executes instructions such as infeed movements or
switching functions. These instructions are programmed in blocks inserted between the two
blocks forming the corner.
The transition circle belongs to the next travel command with respect to the data.
364
G450
P*
Programming Manual, 11/2006, 6FC5398-1BP10-2BA0
Fundamentals