# Tag Group clarification

**URL:** <https://forum.inductiveautomation.com/t/tag-group-clarification/108441>\
**Category:** Ignition\
**Tags:** ignition81\
**Created:** [July 14, 2025, 7:04pm UTC](https://forum.inductiveautomation.com/t/tag-group-clarification/108441 "2025-07-14T19:04:45Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Aiasa21](https://avatars.discourse-cdn.com/v4/letter/a/aeb1de/32.png) [@Aiasa21](https://forum.inductiveautomation.com/u/Aiasa21)\
**Post date:** [July 14, 2025, 7:04pm UTC](https://forum.inductiveautomation.com/t/tag-group-clarification/108441/1 "2025-07-14T19:04:45Z")

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I'm writing to ask for clarification regarding Tag Groups.

If I enable history for a tag by setting its " **Sample mode**" property to " **Tag Group**", and this specific Tag Group is configured with a " **Rate = 10000**", will the data be saved every 10 seconds regardless of whether it changes, or will it check for changes every 10 seconds and only save the data if it has changed?

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**Author:** ![JordanCClark](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/jordancclark/32/83362_2.png) [@JordanCClark](https://forum.inductiveautomation.com/u/JordanCClark)\
**Post date:** [July 16, 2025, 6:28pm UTC](https://forum.inductiveautomation.com/t/tag-group-clarification/108441/2 "2025-07-16T18:28:51Z")

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I'm going to bump this. Not that I have an answer, but I'm interested.

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**Author:** ![lrose](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/lrose/32/62724_2.png) [@lrose](https://forum.inductiveautomation.com/u/lrose)\
**Post date:** [July 16, 2025, 6:39pm UTC](https://forum.inductiveautomation.com/t/tag-group-clarification/108441/3 "2025-07-16T18:39:35Z")

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> [@Aiasa21](#):
>
> will the data be saved every 10 seconds regardless of whether it changes

With very recent experience. No.

The only way I've found to insure that a tag is recorded at a set rate, is to set the Maximum time between samples.

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**Author:** ![robertm](https://avatars.discourse-cdn.com/v4/letter/r/ea5d25/32.png) [@robertm](https://forum.inductiveautomation.com/u/robertm)\
**Post date:** [July 17, 2025, 5:25pm UTC](https://forum.inductiveautomation.com/t/tag-group-clarification/108441/4 "2025-07-17T17:25:08Z")

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Pretty sure this is outlined in the docs. I believe deadband and max time determine whether a new data entry is made. The sample time determines how often the tag value is checked, to filter against the above criteria. So a sample time of tag group uses the tag groups settings to determine WHEN to check the tag value, and deadband and max time determine IF to make a log entry.

Probably an over simplification but thats what i understand.