# Ender 3 Pro 4.2.7 CRTouch, Z-Axis won't go into negative

**URL:** https://marlin.crc.id.au/forum/t/ender-3-pro-4-2-7-crtouch-z-axis-wont-go-into-negative/1120
**Category:** Bug Reports
**Created:** [3 September 2022 01:29 UTC](https://marlin.crc.id.au/forum/t/ender-3-pro-4-2-7-crtouch-z-axis-wont-go-into-negative/1120 "2022-09-03T01:29:22Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Smo86](https://marlin.crc.id.au/forum/user_avatar/marlin.crc.id.au/smo86/32/557_2.png) [@Smo86](https://marlin.crc.id.au/forum/u/Smo86)
#### Post date: [3 September 2022 01:29 UTC](https://marlin.crc.id.au/forum/t/ender-3-pro-4-2-7-crtouch-z-axis-wont-go-into-negative/1120/1 "2022-09-03T01:29:23Z")

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The firmware for the above won’t let the z-axis go in the negative. At least I wasn’t able to on my machine. Not sure if it was something I was doing or if it was the firmware.

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### Author: ![CRCinAU](https://marlin.crc.id.au/forum/user_avatar/marlin.crc.id.au/crcinau/32/1337_2.png) [@CRCinAU](https://marlin.crc.id.au/forum/u/CRCinAU)
#### Post date: [3 September 2022 06:12 UTC](https://marlin.crc.id.au/forum/t/ender-3-pro-4-2-7-crtouch-z-axis-wont-go-into-negative/1120/2 "2022-09-03T06:12:31Z")

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Correct. You shouldn’t be able to go into the negative. It’s a protection to save punching a dint in your build plate.

If you do a G28 / home, then you’ll be able to move to Z0.

You can however use the Z Offset Wizard to set your probe offset correctly.