Siemens Sinamics S120 Function Manual page 624

Communication
10.2 Communication via PROFIBUS DP
Commissioning in STARTER
Slave-to-slave communication is configured in HWConfig and is simply an extension of an
existing telegram. STARTER supports telegram extension.
Figure 10-36 Configuring the slave-to-slave communication links in STARTER
To complete the configuration of slave-to-slave communication for the drive objects, the
telegram portions of the drive objects in STARTER must be matched to those in the HW
Config and extended. The configuration is made centrally via the configuration of the
respective drive device.
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Function Manual, (FH1), 01/2012, 6SL3097-4AB00-0BP2
Drive functions