Siemens SINUMERIK 840D sl Programming Manual page 642

Work preparation
3.8 Coordinate transformations (frames)
Referencing status
By setting a new actual value in the machine coordinate system, the referencing status of the
machine axis is reset:
DB31, ... DBX60.4/.5 = 0 (referenced / synchronized measuring system 1/2)
It is recommended that PRESETON only be used for axes that do not require a reference point.
To restore the original machine coordinate system, the measuring system of the machine axis
must be referenced again, e.g. through active referencing from the part program (G74).
Loss of the referencing status
By setting a new actual value in the machine coordinate system with PRESETON, the
referencing status of the machine axis is reset to "not referenced/synchronized".
Programming
Syntax
PRESETON(<axis_1>, <value_1> [, <axis_2>, <value_2>, ... <axis_8>,
<value_8>])
Meaning
PRESETON:
<axis_x>:
<value_x>:
Further information
PRESETON in NC programs
A detailed description of PRESETON in NC programs is provided in the Function Manual Basic
Functions.
PRESETONS in synchronized actions
A detailed description of PRESETON in synchronized actions is provided in Function Manual
Synchronized Actions.
642
CAUTION
Set actual value with loss of the referencing status
Preprocessing
stop:
Alone in the block:
Machine axis name
Type:
Value range:
New actual value of the machine axis in the machine coordinate system (MCS)
The input is made in the currently valid measuring system (inch/metric)
An active diameter programming (DIAMON) is taken into account
Type:
yes
yes
AXIS
Machine axis names defined in the channel
REAL
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
NC programming