G Codes
M Codes
MILD QUESTIONS
MEDIUM QUESTIONS
HOT QUESTIONS
100

Rapid

G0

100

Cutter on clockwise

M03

100

If you are standing in front of a HMC what direction does the Z axis travel?

In & Out

100

What on and off switch works in conjunction with M01 in the program?

Optional stop

100

What mode switch position allows programs to be modified?

Edit

200

Linear Interpolation

G1

200

Coolant off

M09

200

A boxed letter represents a __________dimension.

Datum

200

What mode switch position allows you to move the machine axes manually?

Jog

200

What is a telescope gage used for?

Inner dia. of hole.

300

Absolute

G90

300

Program end & reset

M30

300

What is the most important rule in Safety?

Follow all safety rules all the time.

300

What is a closed loop system in CNC technology?

Checks to make sure that the axis distance sent is correct before it makes another move

300

What button will reactivate the cnc program after a stoppage?

Cycle start

400

Incremental

G91

400

Optional Stop

M01

400

MSDS are sheets that…

Describe the chemicals and materials in the shop.

400

A boxed dimension is defined as a …

Basic

400

What mode switch position allows you to send the machine to its reference (home) position?

Zero return

500

Cutter Comp Cancel

G40

500

Spindle Stop

M05

500

\You must cut a block 3.25 inches long and add 1/8 of an inch for finish machining. The length of the block you must cut is…

3.375

500

When adding soluble oil to the machine, you must…

Check the mixture in the machine for concentration.

500

Which display mode lets the operator see the distance to go in the current command?

position page