Siemens SINUMERIK 840D sl Function Manual page 624

N4: Own channel - only 840D sl
10.3 Activation and deactivation
Minimum period between two strokes
A minimum time interval between two consecutive strokes can be programmed in setting data:
SD42404 $SC_MINTIME_BETWEEN_STROKES
Example:
There must be a minimum delay of at least 1.3 seconds between two stroke initiations
irrespective of physical distance:
⇒ SD42404 $SC_MINTIME_BETWEEN_STROKES = 1.3 [s]
If a punching dwell time (PDELAYON) is also programmed, then the two times are applied
additively.
If a pre-initiation time at G603 is programmed, it will be effective only if the end of interpolation
is reached before the time set in SD 42404:
The programmed time becomes operative immediately. Depending on the size of the block
buffer, strokes that have already been programmed can be executed with this minimum
interval. The following programming measures (example) can be taken to prevent this:
Program code
N...
N100 STOPRE
N110 $SC_ MINTIME_BETWEEN_STROKES = 1.3
The function is not active when SD42404 = 0.
Travel-dependent acceleration
An acceleration characteristic can be defined with PUNCHACC (Smin, Amin, Smax,
Amax). This command can be used to define different acceleration rates depending on the
distance between holes.
Example 1:
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Function Manual, 10/2015, 6FC5397-1BP40-5BA3
Extended Functions