Yes, by 'tags' I mean data points (different SCADA systems call it different things...)
I'm using 2.8 because its licensing model fits better with what I'm doing. Upgrade is not likely to happen any time soon.
What I have:
single modbus channel ('data source') has a number of field devices attached to it. Devices are identical, each has unique slave ID. Data point names look like 'dev1_property1', 'dev1_property2', 'dev2_property1'...
What I want to do:
drop down list listing 'human legible' device name (so 'dev1' will be 'device name 1', and so on)
Based on the selection, I want to populate the rest of the page with values of the data points associated with that device.
So, only one drop down list, and some code that will use the value of the selected item, concatenate it with the suffix to form a data point name, and then query API for the value(s).
I tried using standard html dropdown list, but got stuck with feeding the concatenated string to the API.
Tried using Angular JS version of the dropdown, but got stuck with the custom model.
If I'm doing it all wrong, and there is a better approach, I'm open for suggestions :-)