HEIDENHAIN TNC 620 Programming Station, User Manual

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Fundamentals, file management
3.1 Fundamentals
3
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HEIDENHAIN | TNC 620 | ISO Programming User's Manual | 9/2016
Basic coordinate system B-CS
The basic coordinate system is a 3-D Cartesian coordinate system.
Its coordinate origin is the end of the kinematics model.
The orientation of the basic coordinate system in most cases
corresponds to that of the machine coordinate system. There may
be exceptions to this if a machine manufacturer uses additional
kinematic transformations.
The kinematic model and thus the position of the coordinate
origin for the basic coordinate system is defined by the machine
manufacturer in the machine configuration. The user cannot modify
the machine configuration values.
The basic coordinate system serves to determine the position and
orientation of the workpiece coordinate system.
W-CS
B-CS
Soft key Application
The user determines the position and orientation
of the workpiece coordinate system by using a 3-
D touch probe for example. The control saves the
values determined related to the basic coordinate
system as
BASE TRANSFORM.
values in the preset
table.
The machine manufacturer configures the
BASE
TRANSFORM.
columns of the preset table in
accordance with the machine.
Further Information: "Datum management with the preset table",
page 503