HEIDENHAIN TNC 640, User Manual, Page: 624 / 948

Multiple-Axis Machining | Miscellaneous functions for rotary axes
13
624
HEIDENHAIN | TNC 640 | Conversational Programming User's Manual | 10/2017
Compensating the machine kinematics in ACTUAL/
NOMINAL positions at end of block: M144 (option 9)
Standard behavior
If the kinematics change, e.g. by inserting a spindle attachment
or entering an inclination angle, the control does not compensate
this modification. If the operator does not take this modification to
the kinematics into account in the NC program, offset machining is
executed.
Behavior with M144
Refer to your machine manual.
The machine geometry must be specified by the
machine tool builder in the description of kinematics.
The
M144
function enables the control to consider the modification
to the machine kinematics in the position display and compensate
the offset of the tool tip in relation to the workpiece.
Programming and operating notes:
Positioning blocks with
M91
or
M92
are permitted
while
M144
is active.
The position display in the
Program Run Full
Sequence
and
Program Run Single Block
operating
modes does not change until the tilting axes have
reached their final position.
Effect
M144
becomes effective at the start of the block.
M144
does not
work in connection with
M128
or the Tilt Working Plane function.
You can cancel
M144
by programming
M145
.