Superimposed Motion; Nc/Plc Interface Signals - Siemens SINUMERIK 840D sl Function Manual

K1: Mode group, channel, program operation, reset response
9.8 Block search Type 5 (SERUPRO)
The gear stage change must then be performed in REPOS; this will work even if the axis
involved is to be in "speed control mode" at the target block. In other cases, the automatic gear
stage change is denied with an alarm if, for example, the axis was involved in a transformation
or coupling between the gear stage change and the target block.
Note
For further information on gear stage changes in DryRun, Program test and SERUPRO, see
Section "S1: Spindles (Page 1199)".
9.8.8.9

Superimposed motion

Only SERUPRO
If "overlaid movements" are used, only the block search via program test (SERUPRO) can be
used, since the overlaid movements are interpolated accordingly in the main run. This applies
in particular to $AA_OFF.
Velocity profile instead of maximum axis velocity
During Program test, a velocity profile must be used, which allows "superimposed movements"
to be interpolated during the main run. It is thus not possible to interpolate at the maximum
axis velocity.
The axis velocity is set in "Dry run feedrate" mode using
SD42100 $SC_DRY_RUN_FEED.
The velocity of the SERUPRO operation is selected using
MD22600 $MC_SERUPRO_SPEED_MODE.
9.8.8.10

NC/PLC interface signals

REPOS offset available
If a REPOS offset has resulted for an axis during SERUPRO, this is displayed via the axial NC/
PLC interface at the end of the SERUPRO operation:
DB31, ...DBX70.0 == 1 (REPOS offset available)
Validity of the REPOS offset
The REPOS offset becomes invalid at the start of a SERUPRO ASUB or NC start to resume
the machining:
DB31, ... DBX70.1 == 1 (REPOS offset invalid)
The axis can be traversed manually in JOG mode or via the PLC user program using FC 18
between the end of the SERUPRO operation and NC start to resume the machining. If the
REPOS offset is traversed completely, the interface signal is reset.
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Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions