W4

Question 1

True or a false

The least input increment for INCH mode for most machining centres is 0.001

Answer 1

False : 0.0001 inch

Question 2

True or False

All words within a CNC program require a decimal point

Answer 2

False: only real words not modal words

Question 3

True or False

You can place as many G - codes in one command line as you wish

Answer 3

False: we’re only allowed a Maximum of 3 codes in one command line

Question 4

How do you determine where to place the program zero point in x and y ?

Answer 4

At the location from which the dimensions are taken on the print

Question 5

G00

Answer 5

Rapid motion

Question 6

G01

Answer 6

Linear motion

Question 7

G20

Answer 7

Inch mode

Question 8

G21

Answer 8

Metric mode

Question 9

G43

Answer 9

Read tool offset height

Question 10

G90

Answer 10

Absolute mode

Question 11

G91

Answer 11

Incremental mode

Question 12

How are M00 and M01 similar ?

Answer 12

They are both program and machine stops

Question 13

How are M00 and M01 diffrent

Answer 13

M01 is optional stop
M00 is non optional stop

Question 14

M00

Answer 14

Program stop

Question 15

M01

Answer 15

Optional program stop

Question 16

G53

Answer 16

Changes reference location from program zero to machine zero

Question 17

M30

Answer 17

End program and rewind , any code below M30 will not be read. Used at end of code