Siemens SINUMERIK 828D Function Manual page 1309

DB31, ... DBX18.5 (oscillation speed)
The spindle is in oscillation mode if a new gear step was defined using automatic gear step selection (M40) or
M41 to M45 (DB31, ... DBX82.3 (Change gear) is set).
NC/PLC IS:
DB31, ... DBX82.3 (Change gear)
is only enabled when a new gear step is defined
that is not the same as the current actual gear step.
If NC/PLC IS:
DB31, ... DBX18.5 (Oscillation speed)
is simply set by the PLC without a new gear step being defined by the NC,
the spindle does not change to oscillation mode.
Oscillation mode is activated with NC/PLC IS:
DB31, ... DBX18.5 (Oscillation speed)
.
Depending on NC/PLC IS:
DB31, ... DBX18.4 (Oscillation via PLC)
while the function is in operation, a distinction is made between:
• Oscillation via NCK
• Oscillation via PLC
• Oscillation with FC 18
References:
Function Manual, Basic Functions; PLC Basic Program (P3)
Oscillation time
The oscillation time for oscillation mode can be defined in a machine date for each direction of rotation:
Oscillation time in M3 direction
(referred to as t1 in the following):
Oscillation time in M4 direction
(referred to as t2 in the following):
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
MD35440 $MA_SPIND_OSCILL_TIME_CW
MD35450 $MA_SPIND_OSCILL_TIME_CCW
S1: Spindles
16.4 Configurable gear adaptation
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