Siemens SINUMERIK 840D sl Programming Manual page 548

Work preparation
3.3 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.
548
Tangent
Tangent
Intervention
point
1
8
45¡˘
7
45¡˘
6
5
6
5 1
2
Tangent
Intervention
point
Tangent
View in the
traversing direction
2
3
4
7
8
Plan view
G41
G42
Traversing direction
3
4
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
NC programming