I try to answer your questions.
Significance of SoftMotion Drive Logical The axis of the logical drive "copy" the movement of the master axis but is a separate object / instance. This allows to manipulate the object without influencing the master axis. E.g. you can execute a SetPos on the logical drive without influencing the master axis.
Time Shift The number of cycles defines the time gap that the set-values of the master will be extrapolated.
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