B&R PLC OPC UA Client

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1

Hi All,

I want to use B&R PLC as a OPC UA client, but I see that I have to manually add all the variables one by one.

Is it possible to automatically retrieve all the data at once instead?

Thanks in advance.

bandicam 2025-09-05 16-11-40-138
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bandicam 2025-09-05 16-12-09-267
bandicam 2025-09-05 16-12-09-2671122×636 148 KB

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2

No, at the moment you have to do it manually. I use OPCUA Expert to get a list of nodeIDs and then it is easy to adapt the configuration in Automation Studio.

3

Thank you for response.

I’m also using OPC UA Expert.

I think I have to manually introduce hundreds of variables to the B&R side, one by one.

Furthermore, it doesn’t support every data type, For example such as Struct, String, or LREAL.

4

Another option is to use the AsOpcUac library. There are some sample programs to get you started. You will still have to manually enter the variables, but I know structs and strings are supported here (I’m not sure about LREALs).

Do you have any control over the structure of the data? If you can organize it into arrays and structures that would make the number of nodes more manageable.