Siemens SINUMERIK 840D sl Programming Manual page 136

Flexible NC programming
1.14 Interrupt routine (ASUB)
Code numbers with traversing direction for LFTXT
Starting from the reference plane, you will find the code numbers with traversing directions in
the following diagram.
The retraction in the tool direction is defined for ALF=1.
The "fast retraction" function is deactivated with ALF=0.
When the tool radius compensation is activated, then:
• For G41 codes 2, 3, 4
• For G42 codes 6, 7, 8
Should not be used, as in these cases, the tool would move to the contour and would
collide with the workpiece.
136
CAUTION
Programming Manual, 06/2009, 6FC5398-2BP20-0BA0
Job Planning