# Question about auto starting vacuum

**URL:** <https://forum.onefinitycnc.com/t/question-about-auto-starting-vacuum/19855>\
**Category:** Elite Series (Masso & Redline) (Gen 1)\
**Created:** [April 4, 2023, 1:19pm UTC](https://forum.onefinitycnc.com/t/question-about-auto-starting-vacuum/19855 "2023-04-04T13:19:35Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![OnefinityCNC](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.onefinitycnc.com/onefinitycnc/32/7_2.png) [@OnefinityCNC](https://forum.onefinitycnc.com/u/OnefinityCNC)\
**Post date:** [April 4, 2023, 3:10pm UTC](https://forum.onefinitycnc.com/t/question-about-auto-starting-vacuum/19855/6 "2023-04-04T15:10:13Z")

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M8 is the ‘cycle coolant’ on gcode command, and this is what will trigger the ‘vac’ labeled power port.

Insert the M8 command at the front of your gcode and it will turn on.

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