Siemens SIMATIC ET 200AL - Page 785

Open User Communication
6.11 Secure Open User Communication
Communication
Function Manual, 12/2017, A5E03735815-AF
99
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. Enter
the IPv4 address of the TLS server, for example, for the "RemoteAddress".
Note
Connection parameters InterfaceId and ID
Note that you can enter the value "0
" for the interface ID and the ID in the data type
TMAIL_V4_SEC
. In this case the CPU itself searches for a matching local CPU interface
or a free connection ID.