Configuration In The Sct - Siemens SIMATIC S7-400 Operating Instructions Manual

"Security configuration"
● "Start of the OPC UA security settings"
With the "Run" button, you open the SCT dialog for configuring the Security functions of
the server application.
For details, see section Configuration in the SCT (Page 55).
4.7.9

Configuration in the SCT

Setting security functions
In the tabs of the SCT described below configure the Security functions of the CP.
The signing and encryption of the data frames are set differently for the server and client
function of the CP:
● For the OPC UA server
In the "OPC UA" tab
● For the OPC UA client
In the connection information (UDT "UASessionConnectInfo") for the client program block
"UA_Connect"
You should also note the special features of certificate validation, see below.
Opening SCT fro STEP 7
You open the SCT tabs described below using buttons in the various tabs of the STEP 7
properties dialog of the CP.
You also reach the SCT tabs if you open the SCT from HW Config:
1. "Edit" menu > "Security Configuration Tool"
2. Select the required CP in the offline view under the folder "All modules".
3. Select "Properties..." in the shortcut menu (right mouse button).
"Time-of-day synchronization"
Here, NTP servers already created in STEP 7 are displayed that can also be edited there.
You can also create and configure NTP servers of the type NTP (secure).
"Log settings"
The "Log settings" tab is displayed only if you have enabled the SCT option "Advanced
mode".
Here you configure the logging functions for the Security properties of the CP.
CP 443-1 OPC UA
Operating Instructions, 01/2017, C79000-G8976-C427-02
Configuration and operation
4.7 Configuration of the CP in STEP 7 V5
55