Siemens SINAMICS Configuration Manual page 145

Control Unit with CBE20
A Communication Board can be optionally inserted in the CU320-2 PN/DP Control Unit:
● The CBE20 Communication Board (X1400) is a PROFINET switch with 4 additional
PROFINET ports.
Notes
Note
PROFINET routing
Routing is not possible between the onboard interfaces X127 and X150 – or between the
onboard interfaces of the Control Unit 320-2 PN and an inserted CBE20 (X1400).
Note
PROFINET interfaces on the CU320-2 PN with CBE20
The integrated PROFINET interface of the CU320-2 PN is independent of the optionally
inserted CBE20 module. The two PROFINET interfaces are not connected with each other.
Routing is not possible between the two PROFINET interfaces.
Note
Ring topology
When connecting the ports, it must be ensured that for standard applications a ring topology
is not created. Additional information on ring topologies can be found in chapter Media
redundancy (Page 169).
Note
Support for the medium-dependent interface auto-MDI(X)
● The Ethernet interface does not support auto-MDI(X). If the network card of the PG/PC
does not support auto-MDI(X) either, only crossed cables may be used to connect devices.
● The PROFINET interfaces support auto-MDI(X). It is therefore possible to use both crossed
and uncrossed cables to connect the devices.
● The CBE20 Communication Board also supports auto-MDI(X). It is therefore possible to
use both crossed and uncrossed cables to connect the devices.
Overview of important parameters
Overview of important parameters
Note
For a description of the parameters, see the converter List Manual.
Industrial Security
Configuration Manual, 08/2017, A5E36912609A
Communication
A.1 Communication
145