Configuration and operation
4.8 Configuration of the CP in STEP 7 Professional
CP 443-1 OPC UA
60 Operating Instructions, 01/2017, C79000-G8976-C427-02
No certificate when the Security functions are disabled.
If the Security functions of the CP are disabled in the STEP 7 project, no certificate will be
generated for the CP.
If you use the CP as an OPC UA server, check whether the UA clients you are using
necessarily demand a certificate. In this case, you need to enable the Security functions of
the CP in STEP 7.
Client: Communications partner (server) without turning off the certificate blocking list
If you configure the CP as OPC UA client without security functions the CP does not receive
a certificate. If the CP as client is to to communicate with a server, on which the certificate
blocking list cannot be turned off, no connection will be established. In this case you need to
generate a self-signed certificate in the SCT.
Change certificate: Alternative applicant name
The Security Configuration Tool (SCT) applies the properties "DNS name", "IP address", and
"URI" from the parameter "Alternative applicant name" in the STEP 7 configuration data.
You can modify this parameter for an OPC UA certificate in the SCT certificate manager. To
do this, select the corresponding certificate and call the shortcut menu "Renew certificate".
Properties modified in SCT for the "Alternative applicant name" are not applied to the
STEP 7 project.
If you delete all of the "Alternative applicant name" properties in SCT, SCT then applies the
corresponding data from the STEP 7 project.
Configuration of the CP in STEP 7 Professional
4.8.1
"Options " parameter group
Module access protection
Protection level
With this option, you can protect the CP from accidental or unauthorized access. The
following options can be selected in the drop-down list:
● Not locked
● Status-dependent
In this setting read access for diagnostic purposes is possible.
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