Fundamentals; Machining Planes - Siemens SINUMERIK 840D sl Operating Manual

Generating a G code program

8.4 Fundamentals

For G code programs, before calling cycles, a tool must be selected and the required
technology values F, S programmed.
A blank can be specified for simulation.
See also
Blank input (Page 259)
8.4 Fundamentals
8.4.1

Machining planes

A plane is defined by means of two coordinate axes. The third coordinate axis (tool axis) is
perpendicular to this plane and determines the infeed direction of the tool (e.g. for 2½-D
machining).
When programming, it is necessary to specify the working plane so that the control system
can calculate the tool offset values correctly. The plane is also relevant to certain types of
circular programming and polar coordinates.
Working planes
Working planes are defined as follows:
Plane
X/Y
Z/X
Y/Z
256
Tool axis
G17 Z
G18 Y
G19 X
Operating Manual, 05/2017, A5E40868956
Milling