Learn how to add history to Tags inside of UDTs.

Video recorded using: Ignition 7.7


(open in window)

[00:00] We can easily log tags inside of a UDT to the Historian. As you see here, I have a couple of data types. I have Motor and Tank. With my Tank, I have quite a few instances. I have Tank 100, all the way down to Tank 124. Now the great thing about using UDT's is that it's all defined in a single place; up here the definition. So if I go and edit the definition, I can go and select any tag here and log it to the Historian. Like, for example, I can select my Level_PV, go to history, say Yes, log it to my MySQL connection, select the scan class, and then potentially of course the Deadband and the Value Mode. I can also go down here to my Temp_PV, and say Yes, log history to the Historian, select the database, again the scan class, and all the other settings. Once I do that for a couple or, you know, two or more of those tags, I can press OK. And down below you'll see all the the instances automatically have a scroll icon to the right hand side of those tags showing that it's being now logged to the Historian. So any time I create a new instance of this UDT, those two tags will automatically start logging to the Historian for me.

You are editing this transcript.

Make any corrections to improve this transcript. We'll review any changes before posting them.


Share this video