HEIDENHAIN TNC 640, User Manual, Page: 149 / 948

Fundamentals, File Management | Fundamentals
4
HEIDENHAIN | TNC 640 | Conversational Programming User's Manual | 10/2017
149
The
Global Program Settings
function (option 44)
additionally provides the
Additive offset (M-CS)
transformation for tilting axes. This transformation is
added to the
OFFSET
values from the preset table and
pallet preset table.
Another feature is
OEM-OFFSET
, which is available only
to the machine tool builder.
OEM-OFFSET
can be used to
define additive axis shifts for rotary and parallel axes.
All
OFFSET
values (from all the above
OFFSET
input
possibilities) together difference between the
ACTL.
and
the
RFACTL
position of an axis.
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 w/ Manual 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
RFNOML
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 w/ Manual 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
RFNOML
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 datum, e.g.
by using the miscellaneous function
M91
.