Siemens SINUMERIK 840Di sl Programming Manual page 377

Reading positions
Points P
• $P_APR: reading P
•
• $P_AEP: reading P
•
• $P_APDV: read whether $P_APR and $P_AEP contain valid data
Fundamentals
Programming Manual, 11/2006, 6FC5398-1BP10-2BA0
and P can be read in the WCS as a system variable during approach.
3 4
(initial point)
3
(contour starting point)
4
8.11 Smooth approach and retraction
Tool offsets
377