Haas / Fanuc-Style Mill Study Reference

A complete set of vocabulary flashcards covering G-codes, M-codes, canned cycle parameters, Haas features, program words, and safety checks for Fanuc and Haas CNC milling controls.

G00

Rapid positioning. Moves axes at rapid speed; never use it to cut material.

G01

Straight-line cutting move at the programmed feed rate. Uses F to set feed.

G02

Clockwise circular/arc move in the active plane. Usually uses I/J/K for arc center or R for radius.

G03

Counterclockwise circular/arc move in the active plane. Usually uses I/J/K or R.

G04

Dwell. Pauses program motion for a programmed time; commonly uses P.

G09

Exact stop, one block only. Makes the machine come to a complete stop at the end of that move.

G17

Select XY plane. Normal milling plane; arcs use I and J.

G18

Select XZ plane. Arcs use I and K.

G19

Select YZ plane. Arcs use J and K.

G20

Inch programming.

G21

Metric/millimeter programming.

G28

Return to machine home/reference position, normally through an intermediate point.

G29

Return from the G28 reference point to a programmed position.

G40

Cancel cutter-radius compensation.

G41

Cutter-radius compensation left based on the direction the cutter travels.

G42

Cutter-radius compensation right based on the direction the cutter travels.

G43 H__

Apply positive tool-length compensation using H offset number.

G44 H__

Apply negative tool-length compensation. Rare for normal mill programming.

G49

Cancel tool-length compensation.

G50

Cancel scaling.

G51

Scaling. Enlarges or shrinks programmed geometry.

G52

Local coordinate shift. Temporarily shifts the active work coordinate system.

G53

Machine-coordinate move for one block only. Ignores G54, G55, and other work offsets.

G54

Select work offset 1. Most common part zero.

G55

Select work offset 2.

G56

Select work offset 3.

G57

Select work offset 4.

G58

Select work offset 5.

G59

Select work offset 6.

G90

Absolute programming. Positions are measured from the active work zero.

G91

Incremental programming. Positions are measured from the current location.

G92

Set a work-coordinate shift value. Advanced.

G93

Inverse-time feed mode. Feed is based on time to complete each move.

G94

Feed per minute. Standard mill feed mode.

G95

Feed per revolution. Feed relates to spindle revolutions.

G80

Cancel any active canned drilling/boring cycle.

G81

Basic drilling canned cycle. Rapid to R plane, feed to Z depth, rapid out.

G82

Spot drill or drill with dwell at the bottom. Uses P for dwell.

G83

Peck drilling. Drills in repeated pecks, retracting to clear chips. Uses Q for peck depth.

G73

High-speed peck drilling. Shorter retract between pecks than G83.

G84

Right-hand rigid tapping cycle. Requires rigid tapping capability.

G74

Left-hand/reverse tapping cycle. Requires rigid tapping capability.

G85

Boring cycle. Feeds in and feeds out.

G86

Bore and stop cycle. Feeds in, spindle stops, then retracts.

G76

Fine boring cycle. Advanced boring cycle.

G77

Back-boring cycle. Used to machine a feature from the back side.

G89

Bore in, dwell, bore out. Uses P for bottom dwell.

G98

Canned cycle returns to the initial Z plane after each hole.

G99

Canned cycle returns only to the R plane after each hole.

Canned-Cycle Word X Y

Hole location.

Canned-Cycle Word Z

Final depth.

Canned-Cycle Word R

R plane; safe plane just above the part.

Canned-Cycle Word F

Feed rate.

Canned-Cycle Word Q

Peck amount, mainly G73/G83.

Canned-Cycle Word P

Dwell time, mainly G82/G89.

Canned-Cycle Word L

Number of repeats.

G10

Set offsets through programming. Advanced; changes offset data.

G12

Circular pocket milling clockwise. Haas feature.

G13

Circular pocket milling counterclockwise. Haas feature.

G31

Feed until a skip signal. Usually probing/inspection related.

G35

Automatic tool diameter measurement. Requires probing/tool-setting setup.

G36

Automatic work-offset measurement. Requires probing setup.

G37

Automatic tool-offset measurement. Requires tool probe/setup.

G47

Text engraving. Haas feature.

G60

Uni-directional positioning. Approaches a position from one direction to improve repeatability.

G61

Exact stop mode. The machine stops at every move.

G64

Cancel G61 exact stop mode; allows normal continuous motion.

G65

Macro subprogram call. Requires the Macro option/knowledge.

G68

Rotate programmed coordinates.

G69

Cancel G68 rotation.

G70

Bolt-hole circle pattern. Haas feature.

G71

Bolt holes along an arc. Haas feature.

G72

Bolt holes along an angle. Haas feature.

G100

Cancel mirror image.

G101

Enable mirror image.

G103

Limit look-ahead/block buffering.

G107

Cylindrical mapping. Option/advanced feature.

G110-G129

Select additional work coordinate systems #7 through #26.

G136

Automatic work-offset center measurement. Requires probe setup.

G141

3D+ cutter compensation. Advanced/option-dependent.

G143

5-axis tool-length compensation. Advanced/option-dependent.

G150

General-purpose pocket milling. Haas feature; advanced.

G154 P__

Select extended work offsets P1 through P99.

G156

Broaching canned cycle. Haas feature.

G167

Modify a Haas setting through the program.

G174

Counterclockwise non-vertical rigid tapping. 5-axis/advanced.

G184

Clockwise non-vertical rigid tapping. 5-axis/advanced.

G187

Smoothness/accuracy setting.

G234

Tool Center Point Control (TCPC). 5-axis option/advanced.

G253

Orient spindle normal to a feature coordinate system.

G254

Dynamic Work Offset. 5-axis setup feature.

G255

Cancel Dynamic Work Offset.

G266

Visible axes linear rapid percentage motion.

G268

Enable feature coordinate system.

G269

Disable feature coordinate system.

M00

Program stop. Operator must press Cycle Start to continue.

M01

Optional stop. Stops only when Optional Stop is turned on.

M02

Program end.

M03

Spindle clockwise/forward. Use S____ to set RPM.

M04

Spindle counterclockwise/reverse.