Can a script be triggered on a specific tag name Tag Change events?

Ignition
1

Hi,

I’d like to have a script in designer which gets triggered on all tags with a specific name (each device would have one).

Is this possible using the Gateway Event Scripts → Tag Change ?

My script triggers on a specific tag, or all tags with [MQTT Engine]*, but I need some kind of blanket rule or wildcard selection that allows me to trigger on a specific tag name.

Ideally I’d like to specify something along the lines of [MQTT Engine]*/*/*/*/ExecCommand, this did not appear to work, should it?

I’m planning to use it to filter comand requests depending on permissions.

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2

No, you can’t configure the listener that way. What you could do (I’d be wary of the performance ramifications, though) is configure a broad listener, and then immediately in your script do the check for the final element in the tagpath - and if it’s not found, finish execution. I’d recommend using if event.tagPath.itemName == "ExecCommand": or something similar.

https://docs.inductiveautomation.com/display/DOC80/Gateway+Event+Scripts#GatewayEventScripts-TagChangeObjects