G And M Codes

Question 1

G00

Answer 1

Rapid traverse motion ;this is used for non-cutting rapid moves of the machine axis, or rapid retract moves after cuts have been completed. maximum rapid motion (IPM) of CNC machine will vary depending on the machine model model

Question 2

G01

Answer 2

Linear interpolation motion: used for cutting in a straight line under a controlled feedrates. Maximum feed rate (IPM) of a CNC machine will vary depending on the model of the machine

Question 3

G02

Answer 3

Circular interpolation clockwise or clockwise arc

Question 4

G03

Answer 4

Circular interpolation counter clockwise or counterclockwise ark

Question 5

G04

Answer 5

Dwell

Question 6

G28

Answer 6

Machine home (rapid traverse) G91 is required for rapid move to the G28 reference point

Question 7

G40

Answer 7

Cutter compensation cancel

Question 8

G41

Answer 8

Cutter compensation left of the programmed Path

Question 9

G42

Answer 9

Cutter compensation right of the programmed path

Question 10

G43

Answer 10

Tool length compensation

Question 11

G54

Answer 11

Work coordinate #1 (part offset zero location )

Question 12

G80

Answer 12

Canned cycle cancel

Question 13

G90

Answer 13

Absolute programming position

Question 14

G91

Answer 14

Incremental programming position

Question 15

M00

Answer 15

The M00 code is used for program stop. the spindle stops and the coolant is turned off. pressing cycle start again will continue the program.

Question 16

M01

Answer 16

The M01 card is used for an optional program stop command. pressing the opt stop key on the control panel signals the machine to perform and stop command control reads the M01 command. It will then perform like an M00.

Question 17

M03

Answer 17

Starts spindle clockwise ,used for most machining. must have a spindle speed defined. the M03 is used to turn on the spindle at the beginning of a program or after a tool change.

Question 18

M04

Answer 18

Starts the spindle counter clockwise. must have a spindle speed defined.

Question 19

M05

Answer 19

Stops the spindle.
the M05 is used to turn the spindle off at the end of a program or before a tool change. If the coolant is on ,the M05 will turn it off

Question 20

M06

Answer 20

The tool change command along with the tool number will action a tool change. this command will automatically stop the spindle, z-axis will move up to the machine zero position and the selected tool will be put in the spindle the coolant pump will turn off right before executing the tool change.

Question 21

M08

Answer 21

Coolant on command

Question 22

M09

Answer 22

Coolant off command

Question 23

M30

Answer 23

Program end and reset to the beginning of program

Question 24

D

Answer 24

Tool diameter selection.

Question 25

F

Answer 25

Feed Rate

Question 26

M

Answer 26

Miscellaneous functions (m codes)

Question 27

G

Answer 27

Preparatory functions (G codes)

Question 28

H

Answer 28

Tool length offset value

Question 29

N

Answer 29

Number of block

Question 30

O

Answer 30

Program number/name

Question 31

R

Answer 31

Canned cycle and circular optional data

Question 32

S

Answer 32

Spindle speed command

Question 33

T

Answer 33

Tool selection code

Question 34

X

Answer 34

Linear X axis motion

Question 35

Y

Answer 35

Linear Y axis motion

Question 36

Z

Answer 36

Linear Z axis motion