HEIDENHAIN TNC 620 User Manual page 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
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
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
HEIDENHAIN | TNC 620 | ISO Programming User's Manual | 9/2016
Y and Z machine axes.
Y machine axis.
Fundamentals
3
3.1
115