G19 G-code

G19 means “all commands are now to be interpreted in the YZ plane”.

This command essentially changes the meaning (or plane) of the I, J, and K parameters of the G2 and G3 G-codes.

Smoothie starts in the G17 mode (the default plane is the XY plane).

You can change this with the G18 or G19 commands, and you can come back to the “normal” plane with the G17 command.

This command is modal, meaning that once it is executed, all Gcodes after it are now in this now “mode”, until changed by another mode-changing Gcode of its family.

Format

The command is used as such:

G19

Which means: G2 and G3 commands are now in the YZ plane.

The command is used as such:

G19

Which means: G2 and G3 arc commands are now interpreted in the YZ plane.

Parameters

No parameters.

Related Commands

• G17 - Select XY plane (default)
• G18 - Select XZ plane
• G2 - Clockwise arc
• G3 - Counterclockwise arc

Further Reading

These resources are used as references for Gcode:

• LinuxCNC Gcode list
• Reprap Gcode list

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