Repositioning Axes - Siemens SINUMERIK 840D sl Turning Operating Manual

6.6

Repositioning axes

After a program interruption in the automatic mode (e.g. after a tool breaks), you can move the
tool away from the contour in manual mode.
The coordinates of the interrupt position will be saved. The distances traversed in manual mode
are displayed in the actual value window. This path difference is called "REPOS offset".
Resuming program execution
You use the "REPOS" function to return the tool to the contour of the workpiece to continue
executing the program.
The interrupt position is not passed as it is blocked by the control system.
The feedrate/rapid traverse override is in effect.
NOTICE
Risk of collision
When repositioning, the axes move with the programmed feedrate and linear interpolation, i.e.
in a straight line from the current position to the interrupt point. Therefore, you must first move
the axes to a safe position in order to avoid collisions.
If you do not use the "REPOS" function after a program interrupt and then traversing the axes
in manual mode, then on changing to automatic mode and starting the machining process, the
control automatically traverses the axes in straight lines back to where they were at point of
interruption.
Requirement
The following prerequisites must be met when repositioning the axes:
● The program execution was interrupted using <CYCLE STOP>.
● The axes were moved from the interrupt point to another position in manual mode.
Procedure
Turning
Operating Manual, 06/2019, A5E44903486B AB
1. Press the <REPOS> key.
2. Select the axes to be traversed one after the other.
3. Press the <+> or <-> key for the relevant direction.
The axes are moved to the interrupt position.
Machining the workpiece
6.6 Repositioning axes
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