Configuring The Opc Ua Server; Enabling The Opc Ua Server - Siemens SIMATIC ET 200AL System Manual

OPC UA communication
9.3 Using the S7-1500 as an OPC UA server
Exporting all array elements separately
If the "Export all array elements as separate nodes" option is selected in the CPU properties
under "OPC UA > Server > Export", the OPC UA XML file contains all elements of arrays as
individual XML elements. In addition, the arrays themselves are each described in an XML
element in the XML file.
If an array contains many array elements, the XML file can be very large.
Tip
The following FAQ contains a converter with which you can convert the export file into CSV
format. You then obtain a list of the tags of the CPU that can be accessed by OPC UA.
You can find the FAQ on the Internet
(https://support.industry.siemens.com/cs/ww/en/view/109742903).
9.3.3

Configuring the OPC UA server

9.3.3.1

Enabling the OPC UA server

Requirement
• If you use certificates for secured communication, e.g. HTTPS, Secure OUC, OPC UA, make
sure that the modules involved have the current time of day and the current date.
Otherwise, the modules evaluate the used certificates as invalid and secure
communication does not work.
• You have acquired a runtime license for the operation of the OPC UA functions, see
License for OPC UA (Page 242).
Commissioning an OPC UA server
By default, the OPC UA server of the CPU is not enabled for reasons of security: OPC UA
clients have neither write nor read access to the S7-1500 CPU.
Follow these steps to activate the OPC UA server of the CPU:
1. Select the CPU. Click on the CPU symbol (for example in the network view).
2. Click "OPC UA > Server" in the properties of the CPU.
3. Activate the OPC UA server of the CPU.
4. Confirm the security notes.
5. Go to the CPU properties, select "Runtime licenses" and set the runtime license acquired for
the OPC UA server.
6. Compile the project.
7. Download the project to the CPU.
The OPC UA server of CPU now starts.
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Communication