Is there a simple expression to move the current date and time into a memory tag? I just want a PLC bit to trigger a time capture. I see there is something called now() and I can trigger that to happen but since an if statement needs a false condition, I'm trying to copy that now() into another me…

[image] dfox37: PLC bit to trigger Gateway tag change event that points at the trigger bit in question, write the value of system.date.now() to the appropriate storage tag.

Thanks Ryan, Any examples on how that's done? I've heard of scripts or expressions in the gateway itself but haven't done that yet. Thanks.

Tag Change Scripts - Gateway Event Scripts | Ignition User Manual Gateway Event Scripts are scripts that run directly on the Gateway. They are useful because they always run, regardless if any Sessions or Clients are open. They also provide a guaranteed way to make sure only a single e…

What does this mean: Due to their nature, Client Tags will not trigger Gateway Tag Change Scripts. However, Client Event Scripts enable you to trigger a script based on a Client Tag changing value. Right now for testing I'm using a test bit in ignition not a plc bit and it doesn't seem to work. A…

Client tags are specific to Vision Clients, and exist only on the client machine which is why they cannot trigger a Gateway Tag Change event. What tag provider is your test tag listed under. If it's under [Client] then its in the wrong place. It does not need to be a PLC tag, you can use a memory …

I'm using perspective and the default tag provider. I created a memory tag of type datetime and it doesn't matter what I try, it doesn't work. I tried your method, I tried putting a script on that tag itself under edit tag, I tried putting a script on the trigger tag. This is very frustrating so …

In perspective a created a boolean memory tag and called it trigger. I also created a datetime memory tag and called it date. If I edit the trigger tag and go to scripting and value changed and type this: system.tag.writeBlocking( ["[default]date"], [system.date.now()] ) Then it'll re…

[image] dfox37: In perspective Irrelevant, tags exist outside of the modules, with the exception of Vision Client Tags [image] dfox37: If I put an IF statement in front of that it won't fire at all. Do you get an error in the logs with the if statement present? If so, what is the erro…

[image] dfox37: If I put an IF statement in front of that it won't fire at all. It doesn't matter what I use in the IF statement, the script just doesn't fire. Are you getting an error indicator on the side of the code? This works just fine as a tag change script that only fires on True and a…

Yes. As soon as I type the word if I get a little red tick mark on the right of the code. Again it doesn't matter if I write the script in the gateway or on the tag itself. So far the only somewhat luck I've had is the very basic script I pasted above. Which again isn't the answer I'm looking fo…

Capture current date and time into a memory tag

Ignition

JordanCClark August 28, 2026, 8:10pm 13

There was a bug for event scripts:

This was more of an annoyance than anything actually wrong. There was a workaround here:

This is fixed in 8.3.9, released a few days ago.