Siemens SIMATIC S7-1200 CP 1242-7 V2 Application Example page 10

3 Function principle
3.1 Connection buildup between remote station and central station via TCSB V3
Note The APN user name and the APN user password are provider-dependent
3. Fixed IP address
The CP 1242-7 V2 sends a connection request to the central station. The static
IP address of the internet connection for accessing the central station is
required.
4. Port
As soon as the connection request has been received by the router of the local
IT network of the central station, it will be forwarded to the central station with
the relevant port number.
5. Project number, station number and TeleControl password
TCSB V3 checks the connections request of the CP 1242-7 V2, using the data
(project number and station number) stored in the configuration.
To authenticate the remote station, an additional password is requested.
If the connection request is evaluated successfully the TCSB V3 updates the
internal routing table entry related to this remote station and the corresponding
current IP address of the CP 1242-7 V2. A connection for the transmission of
TCP/IP packages is established between the CP 1242-7 V2 of the remote
station and the central station.
6. IP address of TCSB V3
TeleService with TCSB
Entry-ID: 56720905, V1.0, 10/2016
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