# Turn ON/OFF High Speed Trends?

**URL:** <https://forum.inductiveautomation.com/t/turn-on-off-high-speed-trends/15485>\
**Category:** Ignition\
**Created:** [September 27, 2017, 9:56pm UTC](https://forum.inductiveautomation.com/t/turn-on-off-high-speed-trends/15485 "2017-09-27T21:56:29Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![vitor.dasilva](https://avatars.discourse-cdn.com/v4/letter/v/b5ac83/32.png) [@vitor.dasilva](https://forum.inductiveautomation.com/u/vitor.dasilva)\
**Post date:** [September 27, 2017, 9:56pm UTC](https://forum.inductiveautomation.com/t/turn-on-off-high-speed-trends/15485/1 "2017-09-27T21:56:29Z")

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Hello!

For our application, we have a batch based process. We’d like to collect high-speed trends for specific variables (in their own scan class) while the sequence is in operation and halt the trending once the sequence stops. Can anyone recommend some options to achieve this?

edit: using Ignition 7.9.4.

Thanks in advance!

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<div class="post-metadata">

**Author:** ![vitor.dasilva](https://avatars.discourse-cdn.com/v4/letter/v/b5ac83/32.png) [@vitor.dasilva](https://forum.inductiveautomation.com/u/vitor.dasilva)\
**Post date:** [September 27, 2017, 10:05pm UTC](https://forum.inductiveautomation.com/t/turn-on-off-high-speed-trends/15485/2 "2017-09-27T22:05:58Z")

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I might have just answered my own question: Driven Event class:

[https://docs.inductiveautomation.com/display/DOC79/Driven+Scan+Class](https://docs.inductiveautomation.com/display/DOC79/Driven+Scan+Class)