# Automatic tool height

**URL:** <https://forums.maslowcnc.com/t/automatic-tool-height/1839>\
**Category:** Technical Details\
**Created:** [January 10, 2018, 6:44pm UTC](https://forums.maslowcnc.com/t/automatic-tool-height/1839 "2018-01-10T18:44:01Z")\
**Posts on this page:** 1\
**Showing post:** 7

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**Author:** ![MeticulousMaynard](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/meticulousmaynard/32/2744_2.png) [@MeticulousMaynard](https://forums.maslowcnc.com/u/MeticulousMaynard)\
**Post date:** [January 10, 2018, 7:36pm UTC](https://forums.maslowcnc.com/t/automatic-tool-height/1839/7 "2018-01-10T19:36:41Z")

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I thought Aux 1 was for spindle on/off? My wiring diagram say that the Z-probe is on Aux 4.

> [@Auto-power switch for router?](https://forums.maslowcnc.com/t/auto-power-switch-for-router/406/22):
>
> AUX4 is currently used for zeroing zAxis with the G38.2 gcode

I haven’t implemented this feature yet myself, maybe @blurfl can add more to this? I believe he has used this feature before.

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