Siemens Sinumerik 840D sl Programming Manual page 461

Table 17-16
G group 17: Approach and retraction response, tool offset
G command No.
1)
NORM 1
KONT 2
KONTT 3
KONTC 4
Table 17-17
G group 18: Corner behavior, tool offset
G command No.
1)
G450 1
G451 2
Table 17-18
G group 19: Curve transition at beginning of spline
G command No.
1)
BNAT 1
BTAN 2
BAUTO 3
Table 17-19
G group 20: Curve transition at end of spline
G command No.
1)
ENAT 1
ETAN 2
EAUTO 3
Fundamentals
Programming Manual, 01/2015, 6FC5398-1BP40-5BA2
Meaning
Normal position at starting and end points
Travel around contour at starting and end points
Approach/retraction with constant tangent
Approach/retraction with constant curvature
Meaning
Transition circle
(tool travels around workpiece corners on a circular
path)
Intersection of equidistant paths
(tool backs off from the workpiece corner)
Meaning
Natural transition to first spline block
Tangential transition to first spline block
Definition of the first spline section by means of the next
3 points
Meaning
Natural transition to next traversing block
Tangential transition to next traversing block
Definition of the last spline section by means of the last
3 points
17.4 G commands
MD20150 W
2) 3)
+ m
+ m
+ m
+ m
MD20150 W
2) 3)
+ m
+ m
MD20150 W
2) 3)
+ m
+ m
+ m
MD20150 W
2) 3)
+ m
+ m
+ m
Tables
STD
4)
SAG MM
x
STD
4)
SAG MM
x
STD
4)
SAG MM
x
STD
4)
SAG MM
x
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