OPC-UA Communication Problem

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1

Hello Everyone,

I have X20CP0483 controller which used for OPC-UA server and provide data to customer PC.
This controller takes machine data from other 4 B&R controller on INA-communication.
We enable the OPC-UA tags on X20CP0483 controller.

After approximately one month, data reading stops automatically.
After connecting via UA Expert and clicking on the trusted certificate, data reading resumes on customer PC.
We need to provide continuous data reading without any manual intervention.

Thans In Advance.

2

X20CP0483 is an OPCUA server, and the client is located on the customer’s PC. As you confirmed, when you connected with the OPCUA expert, the OPCUA server was available, and everything worked fine. Therefore, I would suggest checking the OPCUA client side (the customer’s PC) to see why it stopped reading. Additionally, you can check the AR on CP0483 and update it to the latest version. You can also check AS logger and read errors from communication logger if there are some.

3

Thanks for reply,

One added customer also communicates the one siemens plc and read the data from that so, our X20CP0483 also works as a client.
Same problem is faced in last week. When we connect the OPC-UA Expert at that time data is not readable but when we added another server that time one pop-up comes and if we authenticate the trusted server then all parameters readable.
So how we authenticate server one time, and we get data continuously without any issue.
Also, customer used latest AR version B04.93.

4

The first thing, B4.93, is not the latest. M4.93 is the latest AR. The second comment, was the OPC UA expert connected to the OPC UA server before? The reason I’m asking is that if a pop-up window appears during the UA Expert connection asking for server certificate trust confirmation, it could indicate that the certificate was changed or expired. This is just a tip on what to check. Otherwise, your issue may require investigation by B&R support. To prepare for this, capture a Wireshark trace during the problem and the “fix” using the UA Expert connection. They can analyze the data and guide you to the proper solution…

5

also do not forget to read logger (communication one) during issue.

6

Hi Kishan, what is the status of your topic? Thanks for the update.

7

closed due to inactivity. Can be reopened at any time if new findings are available :slight_smile: