HEIDENHAIN TNC 620 (81760x-02) ISO programming - Manual (Page 522)

Test run and program run
16.5 Program run
16
522
TNC 620 | User's ManualDIN/ISO Programming | 2/2015
Retraction after a power interruption
The Retraction mode of operation must be enabled
and adapted by the machine tool builder. Refer to
your machine manual.
With the Retraction mode of operation you can disengage the tool
from the workpiece after an interruption in power.
The
Retraction mode of operation is selectable in the following
conditions:
Power interruption
Relay external DC voltage missing
Traverse reference points
The Retraction operating mode offers the following modes of
traverse:
Mode Function
Machine axes Movement of all axes in the original
coordinate system
Tilted system Movement of all axes in the active
coordinate system
Effective parameters: Position of the tilting
axes
Tool axis Movements of the tool axis in the active
coordinate system
Thread Movements of the tool axis in the active
coordinate system with compensating
movement of the spindle
Effective parameters: Thread pitch and
direction of rotation
The tilted system mode of traverse is available only
when "tilting the working plane" (Option 8) is enabled
on your TNC.
The TNC selects the mode of traverse and the associated
parameters automatically. If the traverse mode or the parameters
were not correctly chosen, you can change them manually.