# Easy Chart Value Discrepancy

**URL:** <https://forum.inductiveautomation.com/t/easy-chart-value-discrepancy/114072>\
**Category:** Ignition\
**Tags:** vision, ignition81\
**Created:** [February 19, 2026, 8:26pm UTC](https://forum.inductiveautomation.com/t/easy-chart-value-discrepancy/114072 "2026-02-19T20:26:58Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![ttoth](https://avatars.discourse-cdn.com/v4/letter/t/e274bd/32.png) [@ttoth](https://forum.inductiveautomation.com/u/ttoth)\
**Post date:** [February 19, 2026, 8:26pm UTC](https://forum.inductiveautomation.com/t/easy-chart-value-discrepancy/114072/1 "2026-02-19T20:26:58Z")

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I am doing some work on a project that has an easy chart configured to a database. Occasionally the data displayed does not match the PLC, the ignition tag table, or the SQL database. The change in the data is very slight, the tag will show as X.00 in the plc and then show on the trend as X.05. It does not seem to be consistent. The issue was noticed on the production machine, but I have a test setup for troubleshooting and it happens to different tags on the production machine vs. the test setup. Is there any reason that the easy chart would change the data?

 ![trend](https://us1.discourse-cdn.com/inductiveautomation/original/3X/2/1/21013147dded34bad99cd435a7c3d37cd879821b.jpeg)

![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/8/8/889ae23c4ab0356389bd8f55456568117e062e03.png)

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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:** [February 19, 2026, 8:32pm UTC](https://forum.inductiveautomation.com/t/easy-chart-value-discrepancy/114072/2 "2026-02-19T20:32:27Z")

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Are you using the tag history or are you inserting the data into your own database table?

If you are using tag history, how is the deadband style configured? Auto, Analog, or Discrete?

Recomendation is generally to use Discrete.

> **[Deadband Discrete Style and Analog Compression​ - Configuring Tag History |...](https://docs.inductiveautomation.com/docs/8.1/ignition-modules/tag-historian/configuring-tag-history#deadband-discrete-style-and-analog-compression)**
>
> This section describes the Deadband Style property options Auto, Analog, and Discrete because it may not be immediately clear how the deadband value is used differently depending on whether the tag is configured as a Discrete tag or as an Analog tag....

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<div class="post-metadata">

**Author:** ![ttoth](https://avatars.discourse-cdn.com/v4/letter/t/e274bd/32.png) [@ttoth](https://forum.inductiveautomation.com/u/ttoth)\
**Post date:** [February 20, 2026, 1:00pm UTC](https://forum.inductiveautomation.com/t/easy-chart-value-discrepancy/114072/3 "2026-02-20T13:00:39Z")

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I am using tag history. I recently changed the deadband style to discrete to try to mitigate other issues that were popping up with the trend, so this was already set to discrete for all history enabled tags when this issue was noticed.