Siemens SINAMICS Configuration Manual page 141

Note
Address information for interfaces
The address data for the corresponding interfaces can be entered in the STARTER/Startdrive
in the expert list using the following parameters:
● X127 Ethernet interfaces:
Parameters p8901, p8902, and p8903
● Internal PROFINET interfaces X150 P1 and P2:
Parameters p8921, p8922, and p8923
● Interfaces of the optional CBE20 module:
Parameters p8941, p8942, and p8943
Activating the interface configuration and saving it in non-volatile memory
To activate the interface configuration and save it in non-volatile memory, use the following
parameter settings:
● X127 Ethernet interfaces: p8905 = 2
● Internal PROFINET interfaces X150 P1 and P2: p8925 = 2
● Interfaces of the optional CBE20 module: p8945 = 2
Replacement of Control Unit CU320‑2 DP/PN
If the IP address and device name are stored in non-volatile memory, this data is also forwarded
with the memory card of the Control Unit. The memory card allows module exchange without
an IO supervisor when a fault occurs in a PROFINET device.
If a complete Control Unit needs to be replaced due to a device or module defect, the new
Control Unit automatically parameterizes and configures using the data on the memory card.
Following this, cyclic exchange of user data is restarted.
Dynamic IP address assignment
In those cases in which the PROFINET interface is not used for the IO communication, it is
possible to generate an IP address centrally using a DHCP (DHCP = Dynamic Host
Configuration Protocol) server. The following requirements must be satisfied to do this:
● At least one DHCP server must be active.
● The PG/PC and the SINAMICS devices must be connected to the same physical Ethernet
subnet.
Note
DHCP is not supported together with PROFINET. No cyclical connection is established for an
activated DHCP. It is therefore recommended that DHCP not be used within PROFINET
networks!
Industrial Security
Configuration Manual, 08/2017, A5E36912609A
Communication
A.1 Communication
141