Technical data

Communication
9.4 Communication via PROFINET IO
Function Manual
660 Function Manual, 06/2012, 6SL3097-4AB10-0BP4
9.4.2 Hardware setup
9.4.2.1 Structuring CU305 with PROFINET
PROFINET interface for CU305 PN
A PROFINET interface with 2 ports is integrated in the CU305 PN module.
Note
The ports must not be interconnected in such a way that a ring topology is created.
References
● The PROFINET interface on the CU305 PN unit is described in the document: SINAMICS
S110 Manual.
Clock generation via PROFINET IO (isochronous communication)
The SINAMICS S110 with CU305 PN can only assume the role of a synchronization slave
within a PROFINET IO network.
The following applies for a CU305 PN:
● Transmission type IRT, IO device is synchronization slave and isochronous, send clock
cycle is applied to bus: Control Unit synchronizes with the bus and the send clock cycle
becomes the cycle for the Control Unit.
● RT or IRT (option drive unit "not isochronous") has been configured. The SINAMICS does
not use a local clock (clock configured in SINAMICS).
Telegrams
PROFIdrive telegrams are available for implementing cyclic communication via PROFINET
IO (see section "Communication according to PROFIdrive", cyclic communication).