G- And M-Codes For CNC - Sherline Products

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G-Codes and M-Codes

Below are the most common G- and M-codes with their functions called out. The codes highlighted in red are appropriate for use on Sherline CNC machines with the Linux System. We include this list near the end of the instructions that come with your Sherline Linux CNC machine. You can also find a complete list of G-codes on your Sherline Linux computer at Applications>CNC>G-code Quick Reference. These are the G-codes used with our Sherline CNC machines (Click on the links below for more details on the Sherline CNC Packages).

Sherline CNC Mill Packages

Sherline CNC Lathe Packages

Sherline CNC Machine Shop Packages

For a list of the G and M-codes used on our Accu-Pro machines with the MASSO control, go to the MASSO G and M-Codes page.

Common G-Codes

g00 rapid positioning g01 positioning at a given feed rate g02 circular/helical interpolation (clockwise) g03 circular/helical interpolation (counterclockwise) g07 Lathe diameter mode g08 Lathe radius mode g04 dwell g10 coordinate system origin setting g17 xy plane selection g18 xz plane selection g19 yz plane selection g20 inch system selection g21 millimeter system selection g40 cancel cutter diameter compensation g41 start cutter diameter comp. left g42 start cutter diameter comp. right g43 tool length offset (plus) g49 cancel tool length offset g53 motion in machine coordinate system g54 use preset work coordinate system 1 g55 use preset work coordinate system 2 g56 use preset work coordinate system 3 g57 use preset work coordinate system 4 g58 use preset work coordinate system 5 g59 use preset work coordinate system 6 g59.1 use preset work coordinate system 7 g59.2 use preset work coordinate system 8 g59.3 use preset work coordinate system 9 g80 cancel motion mode (includes canned) g81 drilling canned cycle g82 drilling with dwell canned cycle g83 chip-breaking drilling canned cycle g84 right hand tapping canned cycle g85 boring, no dwell, feed out canned cycle g86 boring, spindle stop, rapid out canned g87 back boring canned cycle g88 boring, spindle stop, manual out canned g89 boring, dwell, feed out canned cycle g90 absolute distance mode g91 incremental distance mode g92 offset coordinate systems g92.2 cancel offset coordinate systems g93 inverse time feed mode g94 feed per minute mode g98 initial level return in canned cycles g99 “R” level return in canned cycles

A more complete list of G- and M-Codes

For those interested, here is a more complete list of common codes.

G00 Rapid move G0 X# Y# Z# up to eight axes or G0 Z# X# G01 Feed Rate move G1 X# Y# Z# up to eight axes or G1 Z# X# G02 Clockwise move G03 Counter Clockwise move G04 Dwell time G04 L# G08 Spline Smoothing On G09 Exact stop check, Spline Smoothing Off G10 A linear feed rate controlled move with a decelerated stop G11 Controlled Decel stop G17 XY PLANE G18 XZ PLANE G19 YZ PLANE G28 Return to clearance plane G33 Threading (Lathe)* *NOTE: G33 and G33.1 will not work on Sherline CNC mills or lathes because the spindle and the axis are not synchronized. G35 Bypass error checking on next line G40 Tool compensation off G41 Tool compensation to the left G42 Tool compensation to the right G43 Tool length compensation – negative direction G44 Tool length compensation – positive direction G49 Tool length compensation canceled G53 Cancel work coordinate offsets G54-G59 Work coordinate offsets 1 through 6 G61 Spline contouring with buffering mode off G64 Spline contouring with buffering mode on G65 Mill out rectangular pocket G66 Mill out circular pocket G67 Flycut G68 Mill out rectangular pocket with radius corners G70 Inch mode G71 Millimeter mode G74 Peck drilling (Lathe) G83 Z# X# R# G81 Drill cycle G81 X# Y# Z# R# G82 Dwell cycle G82 X# Y# Z# R# G83 Peck cycle G83 X# Y# Z# R# G84 Tapping cycle G84 X# Y# Z# R# C# G85 Boring cycle 1 G85 X# Y# Z# R# G86 Boring cycle 2 G86 X# Y# Z# R# G88 Boring cycle 3 G88 X# Y# Z# R# G89 Boring cycle 4 G89 X# Y# Z# R# G90 Absolute mode G91 Incremental mode G92 Home coordinate reset G92 X# Y# Z# G94 IPM mode (Lathe) default G95 IPR mode (Lathe) G96 Constant Surface Feed On (Lathe) G97 Constant Surface Feed Off (Lathe)

Common M-Codes

Default M-codes are used on most machine types. User customizable M codes will change based on application and user definition.

M00 Program Stop M01 Program Optional Stop M02 End the Program M03 Spindle On Clockwise, Laser, Flame, Power ON M04 Spindle On Counter Clockwise M05 Spindle Stop, Laser, Flame, Power OFF M06 Tool Change M08 Coolant On M09 Coolant Off M10 Reserved for tool height offset M13 Spindle On, Coolant On M30 End the Program when macros are used M91 Readout Display Incremental M92 Readout Display Absolute M97 Go to or jump to line number M98 Jump to macro or subroutine M99 Return from macro or subroutine M100 Machine Zero Reset M199 Mid program start

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