Gateway Tag change script - change trigger

Ignition
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1

I have a gateway tag event that is looking at two opc tags and when they both go true I want my script to write to the database to run. Below are screenshot of both my tag event script and shared script

TAG EVENT.png849×153 9.71 KB

exceed.png771×868 50.5 KB

I went to my wrapper log on the gateway and realized that my print statements where writing twice which to me indicates that my event script is being called twice and I dont have the slightest idea on why.
unless its due to both tags being used as my change triggers

2

If both values change in the same OPC read cycle, it will indeed cause the script to be executed twice (both are true at that point).

A possible solution is to create an expression tag (the “and” of the two other tags), and react on that instead.

1 Like
3

I was hoping that putting it in the if statement would neglect that from happening, but I’ll go ahead and do that. Thank you very much.