Siemens SINUMERIK 840D sl Function Manual page 695

PRESETONS in the NC program
Spindle mode
Axis mode
+: Possible
-: Not possible
Axis couplings
● Leading axes: The sudden change of the leading axis position caused by PRESETONS is
not traversed in the following axes. The coupling is not changed.
● Following axes: Only the overlaid position component of the following axis is affected by
PRESETONS.
Gantry grouping
● If PRESETONS is used on the guide axis of a gantry grouping, the work offset is also
performed in all synchronized axes of the gantry grouping.
Indexing axes
● PRESETONS can be used on indexing axes.
Software limit switches, operating range limit, protection areas
● If the axis position is outside the specified limits after a work offset by PRESETONS, an alarm
is not displayed until an attempt is made to traverse the axis.
Block search with calculation
PRESETONS commands are collected during the block search and executed with the NC start
to continue the NC program.
Position-dependent NC/PLC interface signals
● The status of the position-dependent NC/PLC interface signals is redetermined based on
the new actual position.
Example: Fixed point positions
– Parameterized fixed point positions: MD30600 $MA_FIX_POINT_POS[0...3] = <fixed
– NC/PLC interface signals DB31, ... DBX75.3 ... 5 (JOG approach fixed point reached)
If the axis is at a fixed point position with the exact stop tolerance, the associated NC/PLC
interface signal is set. The NC/PLC interface signal is reset when the actual value is set by
PRESETONS to a different value outside the exact stop tolerance around the fixed point
position.
DRF offset
● A DRF offset of the axis is deleted by PRESETONS.
Basic Functions
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
point position 1...4>
K2: Axis Types, Coordinate Systems, Frames
Traversing sta‐ Assigned to the NC
tus program
In motion
Stationary
10.4 Coordinate systems
Main axis
- +
+ +
695