04 Control

Control panel

**Home button**

Starts the homing cycle procedure with "$H" command

**Z-probe**

Starts the zero Z-axis search procedure using the command specified in the settings ("Z-probe commands" box).

Example command:

G91G21; G38.2Z-30F100; G0Z1; G38.2Z-1F10

Z-probe should be connected at GRBL control board at pin A5 and GND. For probes that engage contact when tool touches probe make sure to set $6=0.

To set coordinate system for new Z0 using probe you have to set coordinate offset for probe thickness. This means expanding Z-probe command with G92Zn where 'n' is thickness of your Z-probe. For example if your probe is 5 mm thick "Z-probe commands" box should contain:

G91G21; G38.2Z-30F100; G0Z1; G38.2Z-1F10; G92Z5

Now after zeroing Z-axis you may type in command G90 Z0 and tool would move right at the top surface of material.

**Zero XY**

Zeroes the "X" and "Y" coordinates in the local coordinate system. Also retains an local system offset ("G92") for later use.

**Zero Z**

Zeroes the "Z" coordinate in the local coordinate system.

**Restore XYZ**

Restores local system coordinates with "G92" command.

**Safe Z**

Moves tool by "Z"-axis to safe position. Position coordinate can be specified in the "Safe Z" setting.

Position must be specified in machine coordinates.

**Reset**

Resets CNC with "CTRL+X" command

**Unlock**

Unlocks CNC with "$X" command.