Deselecting A Transformation (Trafoof) - Siemens SINUMERIK 840D sl Programming Manual

● Tool radius compensation must be deselected (G40); if not a message is displayed.
● An activated tool length offset is included in the transformation by the control.
● The control deselects the current frame active before the transformation.
● The control deselects an active operating range limit for axes affected by the transformation
(corresponds to WALIMOF).
● Protection zone monitoring is deselected.
● Continuous path control and rounding are interrupted.
● All the axes specified in the machine data must be synchronized relative to a block.
● Axes that are exchanged are exchanged back; if not, a message is displayed.
● A message is output for dependent axes.
Tool change
Tools may only be changed when the tool radius compensation function is deselected.
A change in tool length offset and tool radius compensation selection/deselection must not be
programmed in the same block.
Frame change
All statements, which refer exclusively to the base coordinate system, are permissible
(FRAME, tool radius compensation). However, a frame change with G91 (incremental
dimension) – unlike with an inactive transformation – is not handled separately. The increment
to be traveled is evaluated in the workpiece coordinate system of the new frame – regardless
of which frame was effective in the previous block.
Exceptions
Axes affected by the transformation cannot be used
● as a preset axis (alarm),
● for approaching a checkpoint (alarm),
● for referencing (alarm).
3.9.13

Deselecting a transformation (TRAFOOF)

The predefined TRAFOOF procedure deactivates all active transformations and frames.
Note
For deselecting the transformation, the same secondary conditions (Page 718) apply as for
selecting.
Frames required after this must be activated by renewed programming.
NC programming
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
Work preparation
3.9 Transformations
719