In the variable browser, click on a specific variable and in the properties, select which PLC variable it is on, e.g. PLC: OPC Export "- read function and button" Is writable to OPC Export "- write function.
In the IDE assembly, right-click on "System" and select "Export to OPC". You can find the exported file in your report directory.
The computer must have the OPC server configurator installed, which you can download from the website www.domat.cz . It is important to run the configurator as an administrator. In the configurator, open the exported definition file, select "Save" and in Tools - > Restart the service for the specific service.