The derived tag trick won’t work for arrays. You’ll have to use a scripting function I think.
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Bringing this back up again in hopes that MAYBE something has changed in almost 5 years.
I also have a B&R OPC-UA server I am connecting to with array elements that I cannot seem to individually address as I'd hope. I can bring in the whole float array like so:
But when I create a standard float tag and try (with many different syntaxes) to address an individual array value I get "Bad" value.
Is there any possibility to address an individual element (i.e. is my syntax just wrong?) or is the only method still to pull in the entire array and reference that array tag?
If the server doesn't allow you to further browser underneath the array and see each element, and the syntax you guessed for OPC Item Path doesn't work, then it's likely the server does not support accessing each array element individually.
Doh... time to pour another cup of coffee then...
Or uses some syntax other than square brackets. Have you asked B&R?