CNCMill

G-Code

This may be specific to Acorn CNC at HSL.

Comments

Comments are in parentheses.

G0X0Y0 (rapid traverse to origin - the traverse will be executed, but this parenthetical comment is ignored)

Active Units

G20 (set active units to inches)
G21 (set active units to millimeters)

Feeds

F sets the feed rate in the active units.

G20 (inches)
F15 (15 inches per minute)
G1X0Y0 (traverse to origin at 15 IPM)
G21 (millimeters)
F375 (375 mm per minute)
G1X0Y0 (traverse to origin at 375mmPM)

Straight Line Traversal

G0 is fast traversal. Careful not to run the tool into the part. Each axis is run at full speed until reaching its destination (ie: the tool follows multiple line segments, not an interpolated straight line).

G0X3 (fast traverse the X axis to origin + 3 units)
G0X1Y2Z3 (fast traverse to { 1, 2, 3 })