# Easy Chart Issue – Tag Value Not Updating Correctly

**URL:** <https://forum.inductiveautomation.com/t/easy-chart-issue-tag-value-not-updating-correctly/112223>\
**Category:** Ignition\
**Tags:** ignition81, vision\
**Created:** [November 17, 2025, 5:08am UTC](https://forum.inductiveautomation.com/t/easy-chart-issue-tag-value-not-updating-correctly/112223 "2025-11-17T05:08:55Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![devaraj.v](https://avatars.discourse-cdn.com/v4/letter/d/ecccb3/32.png) [@devaraj.v](https://forum.inductiveautomation.com/u/devaraj.v)\
**Post date:** [November 17, 2025, 5:08am UTC](https://forum.inductiveautomation.com/t/easy-chart-issue-tag-value-not-updating-correctly/112223/1 "2025-11-17T05:08:55Z")

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Hello,

I am experiencing two issues in the Ignition Vision Easy Chart after enabling historian logging on one of my tags. I have attached screenshots/figures that show both issues clearly.

### **Issue 1 – Value does not update instantly on the chart**

When I change the tag value from **0 to 10,000** , the Easy Chart does not jump directly to the new value.  
Instead, it slowly increases in small steps (for example: 0 → 20 → 24.5 → …) until it approaches the target value. However, in the database, the correct value **is logged immediately** (for example: 10000 is stored instantly when I change 0 → 10000).

**Note : Refer figure 1 for issue 1**

**Figure : 1**

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/1/2/123270626447423e3c29a8d8466e0af633db52f8.png)

### **Issue 2 – Decimal drift when setting small values**

When I change the value from **0 to 10,000** , the chart should show exactly **10,000**.  
Instead, it shows drifting value like **9,119.232** , **9,118.213** , etc.

The value does not remain fixed at the number I set, even though the historian logs the exact value correctly.

**Note : Refer figure 2 for issue 2**

**Figure : 2**

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/d/0/d01595c1bc8c31f5d95aa9cabfa4b6faadb634cd.png)

### **Figure 3: Refer to my tag configuration and the historian-enabled configuration**

![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/0/9/09fcbeac3919d80d2b8ee3555871f075066e778d.png)

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/9/e/9e159b680e81fd846b4a20c96f6a7e339d16c860.jpeg)

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<div class="post-metadata">

**Author:** ![robertm](https://avatars.discourse-cdn.com/v4/letter/r/ea5d25/32.png) [@robertm](https://forum.inductiveautomation.com/u/robertm)\
**Post date:** [November 17, 2025, 11:05am UTC](https://forum.inductiveautomation.com/t/easy-chart-issue-tag-value-not-updating-correctly/112223/2 "2025-11-17T11:05:56Z")

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You need to configure your analog tag Deadband style from Auto to Discrete to prevent the interpolated value you are seeing. It seems counterintuitive, but it’s a usual step when configuring analog tags.

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**Author:** ![nminchin](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/nminchin/32/6911_2.png) [@nminchin](https://forum.inductiveautomation.com/u/nminchin)\
**Post date:** [November 17, 2025, 11:47am UTC](https://forum.inductiveautomation.com/t/easy-chart-issue-tag-value-not-updating-correctly/112223/3 "2025-11-17T11:47:37Z")

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This doesn't appear to be an issue anymore in v8.3

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<div class="post-metadata">

**Author:** ![devaraj.v](https://avatars.discourse-cdn.com/v4/letter/d/ecccb3/32.png) [@devaraj.v](https://forum.inductiveautomation.com/u/devaraj.v)\
**Post date:** [November 20, 2025, 11:47am UTC](https://forum.inductiveautomation.com/t/easy-chart-issue-tag-value-not-updating-correctly/112223/4 "2025-11-20T11:47:40Z")

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> [@robertm](#):
>
> You need to configure your analog tag Deadband style from Auto to Discrete to prevent the interpolated value you are seeing. It seems counterintuitive, but it’s a usual step when configuring analog tags.

@robertm I went ahead and changed the tag’s **Deadband Style** from **Auto** to **Discrete** as you suggested. Thanks for pointing me in the right direction!