Z axis do not move between passes and layers

[Sirglider (Pierre-Louis Ruffieux)]

I have 1.1f installed on my eleksmaker A3 with a z axis and home switches.

Now two issues:

1. The z axis is not homing while the x and y work well.

2. If I set a z step per pass of 5mm for example and three passes, the z axis is not changing between the layers. Also Z offset of different values between different layers, the z axis is not moving. However, under Move, I can command the Z axis.

Here are my grbl settings:

$0=10
$1=25
$2=0
$3=4
$4=0
$5=0
$6=0
$10=1
$11=0.010
$12=0.002
$13=0
$20=0
$21=0
$22=1
$23=3
$24=100.000
$25=1000.000
$26=250
$27=1.000
$30=255
$31=0
$32=1
$100=80.000
$101=80.000
$102=44.000
$110=4000.000
$111=4000.000
$112=6000.000
$120=800.000
$121=800.000
$122=5000.000
$130=400.000
$131=300.000
$132=200.000

Thank you for your help

[LightBurn (Oz)]

Have you enabled the Z in the device settings? Many lasers do not have a controlled Z axis, so this setting is off by default.

[Rick (Technical Evangelist)]

[Sirglider (Pierre-Louis Ruffieux)]

Thank you! You both had right. I didn’t know I had to turn the z-axis on. Problem number 2 solved.

What about homing on z-axis? Still not working

[LightBurn (Oz)]

LightBurn just sends $H to the board to trigger the homing cycle, after which GRBL takes over. According to the GRBL docs that should just work if you have a Z, but there may be different compiled versions that have that disabled - I’m not sure. https://github.com/gnea/grbl/wiki/Grbl-v1.1-Configuration#22---homing-cycle-boolean