Repositioning The Axes - Siemens SINUMERIK 840D sl Operation/Programming Manual

08/2005
3
3.4

Repositioning the axes

Repos
+X
♥ Siemens AG, 2005. All rights reserved
SINUMERIK 840D sl Operation/Programming ShopTurn (BAT) – 08/2005 Edition
After a program interruption in automatic mode (e.g. after a tool
breaks) you can move the tool away from the contour in manual
mode. ShopTurn saves the coordinates of the position at the time of
the interruption and displays the path differences that the axes
traversed in manual mode in the actual value window. This path
difference is called "Repos-offset".
Using the "Repos" function, you can return the tool to the contour in
order to continue executing the program.
You cannot traverse the interrupt position, because it is blocked by the
control system.
The feedrate/rapid traverse override is in effect.
Alarm
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 and subsequently move the
axes in manual mode after a program interrupt, ShopTurn
automatically moves the axes during the switch to automatic mode
and the subsequent start of the machining process in a straight line
back to the interrupt point.
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.
Press the "Repos" key.
Select each axis that is to be moved sequentially in the
corresponding direction.
The axes are moved to the interrupt position.
Machining the Workpiece

3.4 Repositioning the axes

3
3-95