Handling Of The Client Certificates Of The S7-1500 Cpu - Siemens SIMATIC ET 200AL Compact Operating Instructions
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OPC UA communication
11.4 Using the S7-1500 CPU as an OPC UA client
Setting languages
UA tags of the String type can be localized with OPC UA, that is, texts (values for the UA tag)
can be available in different languages for the server. For example, localized texts can be
available for DisplayName (Name of the node) and Description (Description).
In the "Languages" area of the "Configuration" tab you can, for example, influence the
language of the texts returned by the server as follows:
In the "Languages" area, enter a number of languages that the server transfers to the client
during connection setup.
The language or the local ID ("language code") associated with it that you enter in the first
line is the language preferred by the client.
• If the server can provide the UA tag in the requested language, it is transferred to the
client.
• If the server cannot provide the UA tag in the requested language, it checks whether it can
provide the UA tag in the language you have entered in the second line (first substitute
language).
• The server works its way down the list, and when it can provide neither the requested
language nor a substitute language, it will provide the default language.
More information
What causes the connection to an OPC UA server to fail? FAQ.
(https://support.industry.siemens.com/cs/ww/en/view/109766709)
11.4.9.2
Handling of the client certificates of the S7-1500 CPU
Where does the client certificate come from?
If you are using the OPC UA client of an S7-1500 CPU (OPC UA client enabled), you can create
certificates for these clients with STEP 7 V15.1 and higher as described in the following
sections.
When you use UA clients from manufacturers or the OPC Foundation, a client certificate is
generated automatically during installation or upon the first program call. You have to import
these certificates with the global certificate manager in STEP 7 and use them for the
respective CPU.
If you program an OPC UA client yourself, you can generate certificates through the program.
Alternatively, you can generate certificates with tools, for example with OpenSSL or the
certificate generator of the OPC Foundation:
• The procedure for OpenSSL is described here: "Generating PKI key pairs and certificates
yourself (Page 1396)".
• Working with the certificate generator of the OPC Foundation is described here: "Creating
self-signed certificates (Page 1395)".
1554
Function Manual, 11/2023, A5E03735815-AL
Communication
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