HEIDENHAIN TNC 620 Programming Station, User Manual, Page: 115 / 695

Fundamentals 3.1
3
HEIDENHAIN | TNC 620 | ISO Programming User's Manual | 9/2016
115
The control converts all movements in the machine coordinate
system, independent of the reference system used for value input.
Example of a 3-axis machine tool with a Y axis as oblique axis, not
arranged perpendicularly to the ZX plane:
In the
Positioning with manl.data input
operating mode, run
an NC block with
L IY+10
The control determines the required axis nominal values from
the defined values.
During positioning the control moves the Y and Z machine axes.
The
RFACTL
and
REF NOML
displays show movements of the Y
axis and Z axis in the machine coordinate system.
The
ACTL.
and
NOML.
displays only show one movement of the
Y axis in the input coordinate system.
In the
Positioning with manl.data input
operating mode run an
NC block with
L IY-10 M91
The control determines the required axis nominal values from
the defined values.
During positioning the control only moves the Y machine axis.
The
RFACTL
and
REF NOML
displays only show one movement
of the Y axis in the machine coordinate system.
The
ACTL.
and
NOML.
displays show movements of the Y axis
and Z axis in the input coordinate system.
The user can program positions related to the machine zero point,
e.g. by using the miscellaneous function
M91
.
Soft key Application
The user can define shifts in the machine
coordinate system according to the specific axis
with use of the
OFFSET
values of the preset table.
The machine manufacturer configures the
OFFSET
columns of the preset table in accordance with the
machine.
Further Information: "Datum management with the preset table",
page 503