Motion Control With Profinet - Siemens SINAMICS S120 Series Function Manual

5.4

Motion Control with PROFINET

Motion Control / isochronous drive link with PROFINET
Figure 5-3
When planning the communication system, please observe the following interrelationships
between the synchronism of the communication and your specific application:
● Isochronous data transfer
With the PROFINET IRT (Isochronous Real Time) communication profile, PROFINET
provides a mechanism for isochronous data transfer. Details are provided in Chapter "RT
classes for PROFINET IO (Page 124)".
● Synchronous applications
– An isochronous application involves an application where it is necessary to have a
– You must synchronize the application to the communication cycle so that the bus and
Communication
Function Manual, 12/2018, 6SL3097-5BD00-0BP0
Motion Control / isochronous drive link with PROFINET, optimized cycle with CACF = 2
(Controller Application Cycle Factor)
precise correlation of the process data with respect to time (process data image that is
consistent over time). Process data are transferred with a synchronized
communication.
the application can interact with one another. This means that you can directly
correlate all process data of a communication cycle with respect to time.
Communication via PROFINET IO
5.4 Motion Control with PROFINET
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