Initial Assignment Of An Ip Address - Siemens SCALANCE X-200RNA Operating Instructions Manual

A subnet is defined by the subnet mask. The structure of the subnet mask corresponds to that
of an IP address. If a "1" is used at a bit position in the subnet mask, the bit belongs to the
corresponding position in the IP address of the subnet address, otherwise to the address of
the computer.
Example of a class B network:
The standard subnet address for class B networks is 255.255.0.0; in other words, the last two
bytes are available for defining a subnet. If 16 subnets must be defined, the third byte of the
subnet address must be set to 11110000 (binary notation). In this case, this results in the
subnet mask 255.255.240.0.
To find out whether two IP addresses belong to the same subnet, the two IP addresses and
the subnet mask are ANDed bit by bit. If both logic operations have the save result, both IP
addresses belong to the same subnet, for example 141.120.246.210 and 141.120.252.108.
Outside the local network, the described division of the end node address has no significance.
For packet switching here, only the entire IP address is of interest.
Note
In the bit representation of the subnet mask, the "ones" must be set left-justified; there must
be no "zeros" between the "ones".
7.3.2

Initial assignment of an IP address

Configuration options
An initial IP address for an IE switch cannot be assigned using Web Based Management or
the Command Line Interface because these configuration tools require that an IP address
already exists.
The following options are available to assign an IP address to an unconfigured device currently
without an IP address:
● By DHCP (factory setting)
● With the STEP 7 configuration tool
● With the NCM PC configuration tool
● With the Primary Setup Tool (PST) configuration tool
To be able to assign an IP address to the IE switch with the PST, it must be possible to
reach the device via Ethernet.
You will find the PST on the Internet pages of Siemens Industry Online Support under the
following entry ID 19440762
19440762).
For further information about assigning the IP address with the PST, refer to the
documentation "Primary Setup Tool (PST)".
For more detailed information on using the configuration tools, refer to the relevant manuals.
SCALANCE X-200RNA
Operating Instructions, 10/2016, C79000-G8976-C342-04
Functional description and configuration using Web Based Management
(http://support.automation.siemens.com/WW/view/en/
7.3 Assignment of an IP address
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