CNC G Code G17, G18, and G19

Plane Selection

Circular milling operations (such as G02 and G03) must be aligned on a plane defined by two axes of motion.  This plane is selected by calling one of these functions.

  • G17 aligns the arc plane with the X and Y axes.
  • G18 aligns the arc plane with the X and Z axes.
  • G19 aligns the arc plane with the Y and Z axes.

Plane selection is modal, and is often programmed in the program header.

See also: Haas Manual

3 thoughts on “CNC G Code G17, G18, and G19”

  1. Need help in milling an arc using G17 G18 G19. The ARC is: width 1″, height .75, Radius .54167, length 2.12939, angle 225. I want to start the arc at x1 y2. I would like to know how to use the numbers in a g2 command. All numbers are in inches.
    Thanks
    Wally

  2. Pingback: CNC G Code: G02 and G03 - ManufacturingET.org

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