# Running Script on Standard Gateway Triggered by Tag Events in Remote Edge Gateway

**URL:** <https://forum.inductiveautomation.com/t/running-script-on-standard-gateway-triggered-by-tag-events-in-remote-edge-gateway/106801>\
**Category:** Ignition\
**Tags:** scripting, ignition81, perspective\
**Created:** [May 29, 2025, 1:22am UTC](https://forum.inductiveautomation.com/t/running-script-on-standard-gateway-triggered-by-tag-events-in-remote-edge-gateway/106801 "2025-05-29T01:22:54Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Apxea](https://avatars.discourse-cdn.com/v4/letter/a/ad7895/32.png) [@Apxea](https://forum.inductiveautomation.com/u/Apxea)\
**Post date:** [May 29, 2025, 1:22am UTC](https://forum.inductiveautomation.com/t/running-script-on-standard-gateway-triggered-by-tag-events-in-remote-edge-gateway/106801/1 "2025-05-29T01:22:54Z")

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Hi everyone,

I’m working with a distributed Ignition setup where:  
Edge Gateway collects data from PLCs and triggers tag events  
Standard Gateway handles logic like API calls and external integrations  
The Edge Gateway is connected as a remote tag provider to the Standard Gateway

**Goal:**

When a tag (e.g., alarm or dataset) changes on the Edge Gateway, I want to:  
Detect that event (e.g., in a valueChanged script)  
Trigger a Python function defined on the Standard Gateway (not Edge)  
Keep all external logic centralized in the Standard Gateway

**Questions:**

1.Is it possible to trigger a script on the Standard Gateway from a tag event on Edge?  
2.Is system.util.sendMessage() from Edge to Standard the correct/recommended approach?  
3.Can this scale well if multiple Edge gateways are sending data to one Standard?

Any guidance or patterns appreciated. Thanks in advance!

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**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [May 29, 2025, 1:26am UTC](https://forum.inductiveautomation.com/t/running-script-on-standard-gateway-triggered-by-tag-events-in-remote-edge-gateway/106801/2 "2025-05-29T01:26:34Z")

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1. No, not directly.
2. Yes, or `system.util.sendRequest()` if Edge needs a reply.
3. Should scale OK, but not great. Will require some logic on Edge to deal with comms breakage in a custom fashion. There's no Store and Forward for messaging.

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**Author:** ![Apxea](https://avatars.discourse-cdn.com/v4/letter/a/ad7895/32.png) [@Apxea](https://forum.inductiveautomation.com/u/Apxea)\
**Post date:** [May 29, 2025, 1:39am UTC](https://forum.inductiveautomation.com/t/running-script-on-standard-gateway-triggered-by-tag-events-in-remote-edge-gateway/106801/3 "2025-05-29T01:39:31Z")

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Thanks, pturmel that clears it up!

Good to know system.util.sendMessage() is the right path, and I’ll look into sendRequest() as well since I may eventually want confirmation or results back.  
Also appreciate the heads-up about messaging not having Store and Forward.  
I hadn’t considered comms failure handling yet, so I’ll plan to add some retry or logging logic on the Edge side.

Much appreciated!