Siemens SINUMERIK 840D sl Function Manual page 683

CPU time intensive programs and programs with symbolic names are processed faster.
Runtime-critical sections (e.g. continuation of processing after deletion of distance-to-go or
preprocessing stop in cycles) can be processed faster.
If the interrupt routine is available as a preprocessed cycle, processing can be continued
more rapidly after the program interrupt.
Special Functions
Function Manual, 09/2011, 6FC5397-2BP40-2BA0
V2: Preprocessing
18.1 Brief description
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