In my PLC (Softlogix v17) I have a recipe structure that a section which is an array of arrays. The OPC-UA server is returning values for elements different than I am requesting. For example, if I subscribe to the tag Recipe.Step.SubStep.Value I get the value that is actually in Recipe.Step.SubStep.Value.
Here’s a pic of the OPC quick client subscribed to some tags, along with the value shown in RSLogix for the same element, and the element the OPC server is actually reading from.
The pattern I’m seeing is that array indices are being added together as you go from the sub-elements back up the chain to the base tag. I’m also using Ignition 7.3.4.