# Tag Deadband AND Interval Timestamping

**URL:** <https://forum.inductiveautomation.com/t/tag-deadband-and-interval-timestamping/116616>\
**Category:** Ignition\
**Created:** [August 2, 2026, 7:56pm UTC](https://forum.inductiveautomation.com/t/tag-deadband-and-interval-timestamping/116616 "2026-08-02T19:56:55Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![ryan.weber](https://avatars.discourse-cdn.com/v4/letter/r/e495f1/32.png) [@ryan.weber](https://forum.inductiveautomation.com/u/ryan.weber)\
**Post date:** [August 2, 2026, 7:56pm UTC](https://forum.inductiveautomation.com/t/tag-deadband-and-interval-timestamping/116616/1 "2026-08-02T19:56:55Z")

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Hi All,

I am looking for some assistance on getting the correct timestamping in our setup. Ignition Edge , using a MQTT transmission module with Sparkplug B, there is no local historian rather we are using store and forward to pass data to a broker to GeoSCADA. I have setup each analog with a deadband value which is timestamping at the correct deadband. We also want to guarantee a sample every 15 minutes. I have assigned my analog to the default tag group and set the history at a max time between interval of 15 minutes.

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/8/2/8281acb7e5ab6dc4643994d2f991e38d4de5d4e7.png)

I am not seeing a timestamped event every 15 minutes.

Any help on this?

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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:** [August 2, 2026, 9:39pm UTC](https://forum.inductiveautomation.com/t/tag-deadband-and-interval-timestamping/116616/2 "2026-08-02T21:39:10Z")

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MQTT Transmission is not a historian, so does not even look at the historian settings. Sparkplug B doesn't have a mechanism to transmit an unchanged value. You will need to make the extra recording happen at the MQTT receiver side.

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<div class="post-metadata">

**Author:** ![ryan.weber](https://avatars.discourse-cdn.com/v4/letter/r/e495f1/32.png) [@ryan.weber](https://forum.inductiveautomation.com/u/ryan.weber)\
**Post date:** [August 2, 2026, 10:10pm UTC](https://forum.inductiveautomation.com/t/tag-deadband-and-interval-timestamping/116616/3 "2026-08-02T22:10:11Z")

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Thanks for the reply.

Is scripting possible?

def republish\_tags(root\_path, names): results = system.tag.browse(root\_path, {"recursive": True}) matched = [str(r["fullPath"]) for r in results.getResults() if r["name"] in names] if matched: values = system.tag.readBlocking(matched) system.tag.writeBlocking(matched, [v.value for v in values]) republish\_tags("[edge]Historian Data", ["PV", "SV", "Td"])

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<div class="post-metadata">

**Author:** ![ryan.weber](https://avatars.discourse-cdn.com/v4/letter/r/e495f1/32.png) [@ryan.weber](https://forum.inductiveautomation.com/u/ryan.weber)\
**Post date:** [August 2, 2026, 10:34pm UTC](https://forum.inductiveautomation.com/t/tag-deadband-and-interval-timestamping/116616/4 "2026-08-02T22:34:52Z")

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Consider closed. Thanks for help.Looks like i can't do it.