Siemens SINUMERIK 840D sl Function Manual page 98

W1: Tool offset
2.8 Tool carriers with orientation capability
If no toolholder or a toolholder without change in orientation is active, then the Z direction is in
the new frame:
● The same as the old Z direction with G17.
● The same as the old Y direction with G18.
● The same as the old X direction with G19.
TCOABS for active frame
The absolute toolholder orientation is set using:
TCOABS (Tool Carrier Orientation ABSolute)
The orientation taken into account for the tool length compensation is independent of the
orientation of the active frame.
Only one of the commands TCOABS or TCOFR can be valid.
Frame change
The user can change the frame following selection of the tool. This does not have any effect on
the tool length compensation components.
Angles in the toolholder data:
The programmed angles of rotation stored in the toolholder data is not affected by the angle of
rotation defined by the frames. When changing from TCOFR to TCOABS, the original
(programmed) angles of rotation in the toolholder data is reactivated.
Tool offset types
TRC (tool radius compensation) takes account of the current tool orientation when CUT2D
or CUT3DFS is active.
All other tool offset types
These are all the compensation types of G group 22, with the exception of CUT3DC and
CUT3DF. The response remains the same with respect to the plane used for compensation.
This is determined independent of the tool orientation from the active frame.
For CUT2DF and CUT3DFF, the compensation plane used for TRC is determined from the frame
independently of the current tool orientation. The active plane (G17/G18/G19) is considered.
CUT3DC and CUT3DF
3D tool offset for circumferential milling
3D tool offset for face milling with active 5-axis transformation are not affected by the
"Toolholder with orientation capability" function.
The orientation information is determined by the active kinematic 5-axis transformation.
Limited toolholder orientation
An alarm is output if an orientation that cannot be reached with the defined toolholder kinematic
is specified by the frame.
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Function Manual, 06/2019, A5E47435126B AA
Tools