Siemens Sinumerik 840D sl Programming Manual page 141

Program code
N10 G17 T5 D8
N20 G1 G41 X10 Y30 Z-5 F500
N30 G2 X22.5 Y40 I50 J40
Further information
General
It is recommended that the working plane G17 to G19 be selected at the start of the program.
In the default setting, the Z/X plane is preset for turning G18.
Turning:
The control requires the specification of the working plane for the calculation of the direction
of rotation (see circular interpolation G2/G3).
Machining on inclined planes
Rotate the coordinate system with ROT (see Section "Coordinate system offset") to position
the coordinate axes on the inclined surface. The working planes rotate accordingly.
Tool length compensation on inclined planes
As a general rule, the tool length compensation always refers to the fixed, non-rotated working
plane.
Milling:
Fundamentals
Programming Manual, 01/2015, 6FC5398-1BP40-5BA2
9.2 Selection of the working plane (G17/G18/G19)
Comment
; Call of working plane X/Y, tool call. Tool
length offset is performed in the Z
direction.
; Radius compensation is performed in the X/
Y plane.
; Circular interpolation / tool radius
compensation in the X/Y plane.
Geometry settings
141