Siemens SINUMERIK 840D sl Function Manual page 293

Incremental travel in inching mode
Function
If the traversing key for the required direction (e.g., +) is pressed, the axis begins to traverse
the increment that has been set. If the traversing key is released before the increment has
been fully traversed, the movement is interrupted and the axis stops. If the same traversing
key is pressed again, the axis traverses the remaining distance until it is zero. Up to this
point, the movement can still be interrupted by releasing the traversing key.
Pressing the traversing key for the opposite direction does not have any effect, unless the
increment has been fully traversed or the movement has been aborted.
Abort traversing movement
If you do not want to traverse the whole increment, the traverse movement can be aborted
with RESET or the interface signal
DB31, ... DBX2.2 (delete distance-to-go).
Incremental travel in continuous mode
Function
The axis traverses the entire set increment when the traversing key is pressed (first rising
edge). If the same traversing key is pressed again (second rising edge) before the axis has
finished traversing the increment, the traversing movement is aborted, i.e., not completed.
Interrupt traversing movement
Behavior as for continuous travel.
Abort traversing movement
The traversing movement can be stopped and aborted by means of the following operations
or monitoring functions:
● Pressing the same traversing key again (second rising edge)
● Pressing the traversing key for the opposite direction
● RESET
● Deleting axial distance-to-go (PLC interface signal)
● On reaching the first valid limitation
Extended Functions
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
CAUTION
Software limit switches and working-area limitations are only activated after reference
point approach.
H1: Manual travel and handwheel travel
4.3 Incremental travel (INC)
293