Siemens Sinamics S110 Function Manual page 623

IP address
To allow a PROFINET device to be addressed as a node on Industrial Ethernet, this device
also requires an IP address that is unique within the network. The IP address is made up of
4 decimal numbers with a range of values from 0 through 255. The decimal numbers are
separated by a period. The IP address is made up of
● The address of the (sub-) network and
● The address of the node (generally called the host or network node)
IP address assignment
The TCP/IP protocol is a prerequisite for establishing a connection and parameterization.
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 sub-network mask 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 HW Config of STEP 7, where the function is called "Edit
Ethernet node".
Note
If the network is part of an existing Ethernet company network, obtain the information (IP
address) from your network administrator.
Device name (NameOfStation)
When it is shipped, an IO device does not have a device name. An IO device can only be
addressed by an IO controller, for example, for the transfer of project engineering data
(including the IP address) during startup or for user data exchange in cyclic operation, after it
has been assigned a device name with the IO supervisor.
NOTICE
The device name must be stored retentively using either the Primary Setup Tool (PST) or
with HW Config of STEP 7.
Replacing the Control Unit CU305-DP (IO device)
If the IP address and device name are stored in non-volatile memory on a suitable memory
card, this data is also forwarded with the Control Unit memory card.
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 are restarted. The memory card allows module
exchange without an IO supervisor when a fault occurs in a PROFINET device.
Function Manual
Function Manual, 01/2011, 6SL3097-4AB10-0BP3
Communication
9.4 Communication via PROFINET IO
621