G-Code List Machining Centers (Common for most machines)

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(G-Codes vary from machine to machine)
G00 positioning (rapid traverse) 
G01 linear interpolation (feed) 
G02 circular interpolation CW 
G03 circular interpolation CCW 
G04 dwell 
G07 imaginary axis designation 
G09 exact stop check 
G10 offset value setting 
G17 XY plane selection 
G18 ZX plane selection 
G19 YZ plane selection 
G20 input in inch 
G21 input in mm 
G22 stored stroke limit ON 
G23 stored stroke limit OFF 
G27 reference point return check 
G28 return to reference point 
G29 return from reference point 
G30 return to 2nd, 3rd & 4th ref. Point
G31 skip cutting 
G33 thread cutting 
G40 cutter compensation cancel 
G41 cutter compensation left 
G42 cutter compensation right 
G43 tool length compensation + dir 
G44 tool length compensation - dir 
G49 tool length compensation cancel 
G45 tool offset increase 
G46 tool offset decrease 
G47 tool offset double increase 
G48 tool offset double decrease 
G50 scaling OFF 
G51 scaling ON 
G52 local coordinate system settingG54 work coordinate system 1 select
G55 work coordinate system 2 select
G56 work coordinate system 3 select
G57 work coordinate system 4 select
G58 work coordinate system 5 select
G59 work coordinate system 6 select
G60 single direction positioning
G61 exact stop check mode
G64 cutting mode
G65 custom macro simple call
G66 custom macro modal call
G67 custom macro modal call cancel
G68 coordinate system rotation ON
G69 coordinate system rotation OFF
G73 peck drilling cycle
G74 counter tapping cycle
G76 fine boring
G80 canned cycle cancel
G81 drilling cycle, spot boring
G82 drilling cycle, counter boring
G83 peck drilling cycle
G84 tapping cycle
G85,G86 boring cycle
G87 back boring cycle
G88,G89 boring cycle
G90 absolute programming
G91 incremental programming
G92 programming of absolute zero point
G94 per minute feed
G95 per revolution feed
G96 constant surface speed control
G97 constant surface speed control cancel
G98 return to initial point in canned cycle
G99 return to Ref point in canned cycle

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