# Hipcup in "Timer Trigger"

**URL:** <https://forum.inductiveautomation.com/t/hipcup-in-timer-trigger/30861>\
**Category:** Ignition\
**Created:** [December 20, 2019, 2:07pm UTC](https://forum.inductiveautomation.com/t/hipcup-in-timer-trigger/30861 "2019-12-20T14:07:13Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![dcamp1](https://avatars.discourse-cdn.com/v4/letter/d/dc4da7/32.png) [@dcamp1](https://forum.inductiveautomation.com/u/dcamp1)\
**Post date:** [December 20, 2019, 2:07pm UTC](https://forum.inductiveautomation.com/t/hipcup-in-timer-trigger/30861/1 "2019-12-20T14:07:13Z")

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I have this in a Transaction Group to trigger by a timer every 30 minutes.

My problem is every so often the trigger fires when it’s not suppose to (Which it writes a NULL to all coulmns) and resets the trigger point to begin every 30 minuter from that trigger.

See example

 ![Example](https://us1.discourse-cdn.com/inductiveautomation/original/2X/d/da0a0e6d35fb4d05e1619e3fbc8a845264606ee8.jpeg)

This causes a problem in my TREND graphs because there will be a BLANK spot on the graph at that time.

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**Author:** ![bkarabinchak.psi](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/bkarabinchak.psi/32/83567_2.png) [@bkarabinchak.psi](https://forum.inductiveautomation.com/u/bkarabinchak.psi)\
**Post date:** [December 20, 2019, 2:37pm UTC](https://forum.inductiveautomation.com/t/hipcup-in-timer-trigger/30861/2 "2019-12-20T14:37:46Z")

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That tag that has a null - it only has a non-null value every 30 minutes and then goes right back to null?

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<div class="post-metadata">

**Author:** ![dcamp1](https://avatars.discourse-cdn.com/v4/letter/d/dc4da7/32.png) [@dcamp1](https://forum.inductiveautomation.com/u/dcamp1)\
**Post date:** [December 20, 2019, 3:52pm UTC](https://forum.inductiveautomation.com/t/hipcup-in-timer-trigger/30861/3 "2019-12-20T15:52:30Z")

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I don’t understand what you mean?

I’m concerned about the Timestamp, it’s not being triggered every 30 minutes. And when it messes up it resets the trigger timer to a new value.

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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:** [December 20, 2019, 3:59pm UTC](https://forum.inductiveautomation.com/t/hipcup-in-timer-trigger/30861/4 "2019-12-20T15:59:01Z")

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Are you actively working on this project? Transaction groups restart when you save their project.

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<div class="post-metadata">

**Author:** ![bkarabinchak.psi](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/bkarabinchak.psi/32/83567_2.png) [@bkarabinchak.psi](https://forum.inductiveautomation.com/u/bkarabinchak.psi)\
**Post date:** [December 20, 2019, 4:07pm UTC](https://forum.inductiveautomation.com/t/hipcup-in-timer-trigger/30861/5 "2019-12-20T16:07:34Z")

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I mispoke before. Each column is a tag value you are recording correct. Are they continuous or analgog tags? Is there any reason why they would legitimately be null or is them being a null the bug?