G Group 16: Feedrate Override At Inside And Outside Curvature; G Group 17: Approach And Retraction Response, Tool Offset; G Group 18: Corner Behavior, Tool Offset; G Group 19: Curve Transition At Beginning Of Spline - Siemens SINUMERIK 840D sl Programming Manual

4.3.16

G group 16: Feedrate override at inside and outside curvature

G command No.
1)
CFC 1
CFTCP 2
CFIN 3
4.3.17

G group 17: Approach and retraction response, tool offset

G command No.
1)
NORM 1
KONT 2
KONTT 3
KONTC 4
4.3.18

G group 18: Corner behavior, tool offset

G command No.
1)
G450 1
G451 2
4.3.19

G group 19: Curve transition at beginning of spline

G command No.
1)
BNAT 1
BTAN 2
BAUTO 3
NC programming
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
Meaning
Constant feedrate at contour effective for internal and
external radius
Constant feedrate in tool center point (center point
path)
Constant feedrate for internal radius only, acceleration
for external radius
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
4.3 G commands
MD20150 W
2) 3)
+ m
+ m
+ m
MD20150 W
2) 3)
+ m
+ m
+ m
+ m
MD20150 W
2) 3)
+ m
+ m
MD20150 W
2) 3)
+ m
+ m
+ m
Tables
STD
4)
SAG MH
x
STD
4)
SAG MH
x
STD
4)
SAG MH
x
STD
4)
SAG MH
x
1253