I think this has been discussed before, but I've searched all morning and still can't find an answer.
I want to trigger a msgbox when a tag value exceeds 1100. That part I can do. After the user clicks "OK", I don't want the msgbox to appear again until after the tag value has dropped below 1050 and then exceeds 1100 again (in effect, a deadband). I'm thinking that if I use the dataupdate as the trigger for the msgbox, it will appear every time the tag updates, which would be every so many seconds. Any help is appreciated!