Communications services
3.6 Secure Communication
Communication
52 Function Manual, 12/2017, A5E03735815-AF
3. Right-click in the table to open the shortcut menu. Click "Import" and import the required
certificate or the required CA certificates.
Through the import the certificate has a certificate ID assigned to it and can be assigned
to a module in the next step.
4. Mark PLC_1 and navigate to the "Certificates of partner devices" table in the "Protection
& Security" section.
5. Click in an empty line in the "Certificate subject" column to add the imported certificates.
6. Select the required CA certificates of the communication partner from the drop-down list
and confirm the selection.
Optionally the MES system can also request a device certificate of the CPU to authenticate
the CPU (i.e., the TLS client). In this case, the CA certificates of the CPU must be made
available to the MES system. The prerequisite for importing the certificates into the MES
system is a preceding export of the CA certificates from the STEP 7 project of the CPU.
Follow these steps:
1. Open the certificate manager in the global security settings in the project tree.
2. Select the matching table (CA certificate) for the certificate to be exported.
3. Right-click the selected certificate to open the shortcut menu.
4. Click "Export".
5. Select the export format of the certificate.
In the next step you have to create the user programs for the data exchange and load the
configurations together with the program.
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