Siemens Simatic RTU303xC Series Operating Instructions Manual page 146

Configuration (WBM)
4.15 Services
CA certificate
Here, you have the option of configuring the CA certificate or intermediate certificate of the
mail server or the individual server certificate for sending e-mail with STARTTLS.
● Currently used file
Shows the name of the certificate file currently being used by the RTU..
● File used after applying
Shows the name of the last certificate file to be loaded on the RTU (on clicking the"Load
on device" button).
● Load new file
After selecting a certificate file stored on the configuration PC using the "Search" button,
the file name is displayed here.
● Search
Searches the file system of the configuration PC for a certificate file saved there that is
intended to be loaded on the RTU.
● Load on device
By clicking the button, download the selected certificate file to the RTU.
● Encrypt zipped attachments
If you enable the option, the attachments of the e-mails compressed as a ZIP archive are
transferred encrypted.
Use tools such as WinZip or 7Zip to extract the encrypted archives.
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Operating Instructions, 06/2019, C79000-G8976-C382-06
RTU303xC