Actual Value Setting Without Loss Of The Referencing Status (Presetons) - Siemens SINUMERIK 840D sl Function Manual

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
PRESETON 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 PRESETON.
Overlaid movement $AA_OFF
● An overlaid movement ($AA_OFF) (Page 45) is not affected by PRESETON.
Online tool offset FTOC
● An active online tool offset (FTOC) (Page 73) remains active even after PRESETON.
Axis-specific compensations
Axis-specific compensations remain active after PRESETON.
JOG mode
● PRESETON must only be used on a stationary axis.
JOG mode, REF machine function
● PRESETON must not be used.
See also
On-the-fly parting (Page 152)
3.7.17

Actual value setting without loss of the referencing status (PRESETONS)

Function
The PRESETONS() procedure sets new actual values in the machine coordinate system (MCS)
from synchronized actions for one axis. This corresponds to work offset of the axis MCS. The
axis is not traversed.
From synchronized actions, PRESETONS must only be used on command axes, i.e. on axes
that have been started from a synchronized action. The axis must also be assigned to the
channel, i.e. this channel must have the interpolation right for this axis. The axis is not
requested from another channel via axis replacement.
Synchronized actions
Function Manual, 08/2018, 6FC5397-5BP40-6BA2
point position 1...4>
Detailed description
3.7 Actions in synchronized actions
99