# Trigger group on high or low transition?

**URL:** <https://forum.inductiveautomation.com/t/trigger-group-on-high-or-low-transition/1122>\
**Category:** Archived Topics\
**Created:** [April 29, 2009, 3:51pm UTC](https://forum.inductiveautomation.com/t/trigger-group-on-high-or-low-transition/1122 "2009-04-29T15:51:07Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![SonicClang](https://avatars.discourse-cdn.com/v4/letter/s/eada6e/32.png) [@SonicClang](https://forum.inductiveautomation.com/u/SonicClang)\
**Post date:** [April 29, 2009, 3:51pm UTC](https://forum.inductiveautomation.com/t/trigger-group-on-high-or-low-transition/1122/1 "2009-04-29T15:51:07Z")

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Am I not understanding the group trigger options? Is there an option to trigger a group on a high or low transition? I’d like to trigger a group when a bit goes from 1 to 0, but not trigger when it goes 0 to 1.

I’m just full of questions lately.

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**Author:** ![nathan](https://avatars.discourse-cdn.com/v4/letter/n/c5a1d2/32.png) [@nathan](https://forum.inductiveautomation.com/u/nathan)\
**Post date:** [April 29, 2009, 3:58pm UTC](https://forum.inductiveautomation.com/t/trigger-group-on-high-or-low-transition/1122/2 "2009-04-29T15:58:26Z")

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That’s what the “is=0” trigger does.

What you described is a trigger “on value change”

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**Author:** ![Colby.Clegg](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/colby.clegg/32/3282_2.png) [@Colby.Clegg](https://forum.inductiveautomation.com/u/Colby.Clegg)\
**Post date:** [April 29, 2009, 4:11pm UTC](https://forum.inductiveautomation.com/t/trigger-group-on-high-or-low-transition/1122/3 "2009-04-29T16:11:22Z")

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Yeah, the “=0” option with the “only execute once while active” option enabled will ensure it only triggers on the transition to 0.

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**Author:** ![SonicClang](https://avatars.discourse-cdn.com/v4/letter/s/eada6e/32.png) [@SonicClang](https://forum.inductiveautomation.com/u/SonicClang)\
**Post date:** [April 29, 2009, 5:47pm UTC](https://forum.inductiveautomation.com/t/trigger-group-on-high-or-low-transition/1122/4 "2009-04-29T17:47:13Z")

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Now that you explain it, it makes total sense. Sometimes I wonder how I function…