Hello, I don't know, if I understood the question right. Maybe you meant the connection between ctrlX-core and the HMI device with the browser? If so, my answer is as follows: The WebIQ server is located on the ctrlX-Core, all data is exchanged locally and the historical data or alarms are saved there and can be called up by the HMI and are retained there even if there are connection problems. The connection to the HMI client is a web connection and is buffered with an internal fixed size buffer. If the connection interupts for a short time, e.g. 2-3s, it will be buffered and after a while canceled. After reconnect, the user is prompted to login again. The number of simultaneously accessing clients is limited to 2 in the basic system and can be increased by 3 with additional licenses. The number of IO connections (OPC UA clients) is also 2 and can be increased in steps of 3 with additional licenses. The total number of clients or OPC UA interfaces is unlimited and only depends on the number of licenses booked. Hope this answers Your questions? Kind regards
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