Siemens SIMATIC S7-1500 Function Manual page 99

Open User Communication
6.11 Secure Open User Communication
Settings at the TLS client
To set up a secure TCP connection in the TLS client, follow these steps:
1. Create a global data block in the project tree.
2. Define a tag of the data type TCON_IP_4_SEC in the global data block.
The example below shows the global data block "Data_block_1" in which the tag "SEC
connection 1 TLS-Client" of the data type TCON_IP_V4_SEC is defined.
Figure 6-19 IP_V4_SEC_Client
3. Set the connection parameters of the TCP connection in the "Start value" column. For
example, enter the IPv4 address of the TLS server for "RemoteAddress".
Note
Connection parameter Interface ID
Note that you can enter the value "0" for the interface ID in the data type
TCON_IP_V4_SEC. In this case, the CPU itself searches for a suitable local CPU
interface.
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Function Manual, 11/2019, A5E03735815-AH
Communication