Siemens SINAMICS S120 Function Manual page 430

Communication PROFIBUS DP/PROFINET IO
10.2 Communication via PROFIBUS DP
Figure 10-38 Telegram assignment for slave-to-slave communication
10. The details after the creation of the slave-to-slave communication link for the drive object
of the CU320 are as follows:
Figure 10-39 Details after the creation of the slave-to-slave communication link
11. You are required to adjust the standard telegrams accordingly for every DO (e.g. drive
object) of the selected CU that shall actively participate in slave-to-slave communication.
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Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4
Drive Functions