Siemens SINAMICS DCM Operating Instructions Manual page 375

IP address assignment
The TCP/IP protocol is required to establish a connection and assign parameters; this is the
reason that an IP address is required.
The IP addresses of IO devices can be assigned by the IO controller and always have the
same subnet screen as the IO controller. In this case, the IP address is not stored
permanently. The IP address entry is lost after POWER ON/OFF. If the IP address is to be
stored in a non-volatile memory, the address must be assigned using the Primary Setup Tool
(PST).
This can also be performed with Hardware Config of STEP 7, where the function is called
"Edit Ethernet node".
Note
If the network is part of an existing Ethernet company network, ask your network
administrator for the information you need (IP address, subnet screen, and any router that
may be in use.)
Device name (NameOfStation)
In its delivery state, an IO device does not have a device name. An IO device can only be
addressed by an IO controller (in order to transmit project engineering data (including the IP
address) during startup or exchange user data during cyclic operation, for example) after it
has been assigned a device name with the IO supervisor.
NOTICE
The unit name must be saved in a non-volatile fashion using HW Config from STEP 7.
Replacing the Control Unit (CUD) (IO device)
The IP address and device name are stored in the non-volatile memory in the form of
parameters (p61000 und p61001).
If a module is replaced, therefore, it is possible to continue running it as a PROFINET device
by resetting the parameters.
Definition: Subnet screen
The bits set in the subnet screen define the part of the IP address that contains the address
of the (sub)network. The following generally applies:
● The network address is obtained by an AND logic operation on the IP address and
● The node address is obtained by an AND NOT logic operation on the IP address and
SINAMICS DCM DC Converter
Operating Instructions, 1.2012, C98130-A7066-A1-05-7619
subnet screen.
subnet screen.
Descriptions of functions
10.3 PROFINET IO
373