Siemens SIPROCESS GA700 - Page 246

Functions
6.27 [4] Communications
Operating with the Local User Interface
246 Operating Manual, 06/2017, A5E31930478-05
can be used, for example, for correction of cross-reference or for pressure compensation
of the device's own measured values.
IP address
Note
Supported IP addresses
The device supports only Class A, Class B, and Class C addresses. You cannot use Class D
or Class E addresses.
IP addresses are used for unique identification of devices within a network or a network
segment. They are used for data exchange between the communication partners via TCP/IP.
An IP address has the following decimal notation:
Table 6- 62 Example of an IP address
192.
168.
0.
2
Network mask
Subnet mask
The network mask masks the IP address of a device. The IP address is divided into a
"network component" and a "device component".
Table 6- 63 Masking
Subnet mask
255.
255.
255.
0
IP address
192.
168.
0.
3
Division
Network component
Device component
The result is a logical separation of a physically uniform network into different network
segments (subnets). Within a segment the network component must be identical and the
device component different.
Default gateway
The masking determines which IP addresses a device looks for in its own segment and
which are forwarded to a default gateway. The default gateway of a network forwards all
network requests that are not part of the same subnet to other subnets.