# Powerchart Peculiarities

**URL:** <https://forum.inductiveautomation.com/t/powerchart-peculiarities/89728>\
**Category:** Ignition\
**Tags:** perspective, ignition81\
**Created:** [April 30, 2024, 6:56pm UTC](https://forum.inductiveautomation.com/t/powerchart-peculiarities/89728 "2024-04-30T18:56:55Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![DWhitaker](https://avatars.discourse-cdn.com/v4/letter/d/d6d6ee/32.png) [@DWhitaker](https://forum.inductiveautomation.com/u/DWhitaker)\
**Post date:** [April 30, 2024, 6:56pm UTC](https://forum.inductiveautomation.com/t/powerchart-peculiarities/89728/1 "2024-04-30T18:56:55Z")

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Hi,

I'm seeing an odd behaviour with the powerchart that I can't quite get my head around. The value of a tag seems to be updating in a lagged way, in the first screen shot the value seems constant up until the current time, but then a few moments later if I go back to the chart some past data has now filled in.

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/a/2/a2508ee9a552ae08952c3ed1ff3701ef54e304ab.png)

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/8/7/87fc2a27dd03efa667b03308453ec05f35837b4d.png)

The config is as follows incase there is anything there:

![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/5/e/5e304164a97b7c7220194bd0041823ae213a7506.png)

Thanks in advance for any help.

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<div class="post-metadata">

**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:** [April 30, 2024, 7:08pm UTC](https://forum.inductiveautomation.com/t/powerchart-peculiarities/89728/2 "2024-04-30T19:08:39Z")

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That often means that the source device's clock is wrong.

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<div class="post-metadata">

**Author:** ![DWhitaker](https://avatars.discourse-cdn.com/v4/letter/d/d6d6ee/32.png) [@DWhitaker](https://forum.inductiveautomation.com/u/DWhitaker)\
**Post date:** [April 30, 2024, 7:15pm UTC](https://forum.inductiveautomation.com/t/powerchart-peculiarities/89728/3 "2024-04-30T19:15:10Z")

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Oh interesting!

That could very much be the problem! I'll look at that.

Thanks!

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<div class="post-metadata">

**Author:** ![DWhitaker](https://avatars.discourse-cdn.com/v4/letter/d/d6d6ee/32.png) [@DWhitaker](https://forum.inductiveautomation.com/u/DWhitaker)\
**Post date:** [April 30, 2024, 7:56pm UTC](https://forum.inductiveautomation.com/t/powerchart-peculiarities/89728/4 "2024-04-30T19:56:37Z")

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Turns out you were right! Thanks for the quick solution!