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Subscribe to an index of an array

support
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21 Nov 2025 08:31 - 21 Nov 2025 08:34 #14474 by support

Replied by support on topic Subscribe to an index of an array

Hello.
I suppose you to mean to an element of an array, not to an index of an array.

OPC UA has such a feature, and QuickOPC supports it. See:

- opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Late...ments%20from%20an%20array.html
- opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Late...ments%20from%20an%20array.html
- opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Late...tml#Index%20Range%20Lists.html

The index range can be for a single element, too.

This only works if the OPC UA server actually supports it (not all servers do). OPC Classic does not have a corresponding feature.
Some servers also expose array elements as individual tags.

I hope this helps
Best regards

Last edit: 21 Nov 2025 08:34 by support.

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