Tag Change Script in 8.3

[Kevin.Herron]

Difference Gateway Event vs Tag Event Scripts

There are differences, but your conclusions are the opposite of what you might find. Both mechanisms will never miss a tag change event delivered by the tag system. A gateway event tag change script has an unbounded queue to hold and execute these change events. You won’t ever miss events, but it’s technically possible to run your memory up if your script execution blocks for a long time, or indefinitely, as events continue to queue up. Tag event scripts have a bounded queue, per-tag, size 5,…