Siemens SINAMICS S120 Function Manual page 627

Application class 3 (positioning drive)
In addition to the drive control, the drive also includes a positioning control, which means that
it operates as a self-contained single-axis positioning drive while the higher-level
technological processes are performed on the controller. Positioning requests are
transmitted to the drive controller via PROFIBUS/PROFINET and launched. Positioning
drives have a very wide range of applications, e.g. screwing and unscrewing caps in a bottle
filling plant or the positioning of cutters on a film cutting machine.
Figure 10-3
Drive functions
Function Manual, (FH1), 01/2013, 6SL3097-4AB00-0BP3
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Application class 3
10.1 Communication according to PROFIdrive
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Communication
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