Do Something on UDT Enabled

I have a UDT and I want to trigger a function when the tag is enabled/disabled.


  • Add an enabled tag to the UDT and then have it write to the enabled/disabled attribute of another tag - value - in the UDT that represents the value of the UDT overall.

Here I use the following to change enabled/disabled in the enabled’s Tag Change event:

This does not work well, because it seems subject to the scan class of the value tag, which the user is able to set to very slow rates.

Inside that same Tag Change event for the enabled tag in the UDT, I do some other stuff.

Does anyone have any suggestions on how to either speed up my current method or a different method that will still allow me to do something when the UDT or value in the UDT is enabled/disabled?