CNC: Letter Addresses And Codes 150402d Moodle

Question 1

The letter at the beginning of a word, G, M, S?

Answer 1

Address

Question 2

Identifies a specific sequence, O1234, O2222?

Answer 2

Program number

Question 3

A single character?

Answer 3

Byte

Question 4

Combination numbers and letters, g84, m04

Answer 4

Word

Question 5

Identified by a semicolon

Answer 5

End of block

Question 6

Identify the blocks relative position, N100, N150?

Answer 6

Sequence number

Question 7

A group of words, N10 G03 M08 T01

Answer 7

Block

Question 8

G00 is the command for a tool to move quickly from its current position to a new position. To do this properly, it is necessary to …

Answer 8

Program a path to avoid objects that may exist between these points

Question 9

You are required to machine a 1.25 in diameter spot face on a casting. You have determined that a one second well at the end of the cycle will be sufficient. Which block is correct?

Answer 9

G82 X1.23 Y4.56 Z-.125 R.025 P1000 F3.5

P1000 Is the key here

Question 10

The command for a reference point return, g-28, can be included at different times throughout the program. Several are listed below. One is inaccurate. Which one?

At the end of each cutting pass
After each tool has completed its task
Near the end of a program
To conduct a workpiece inspection

Answer 10

At the end of each cutting pass

Question 11

When programming for a return to machine home, g28, the definition of an intermediate location is

Answer 11

A position, often away from the workpiece where the return to home begins

Question 12

The best description of a secondary reference point is that it’s a location that

Answer 12

Has many of the attributes and benefits as machine home

Question 13

M codes

Answer 13

Turn functions on and off, rather than prepare for them

Question 14

Prior to engaging a workpiece, you will commonly see this miscellaneous code

Answer 14

M08

Question 15

Why would it be most appropriate for a spindle orientation code m-19 to be used?

Answer 15

Prior to a tool change

Question 16

In a swingarm tool change system,

Answer 16

The tool to be used next is best identified prior to a tool change command

Question 17

Adjusting rotational speeds will have no effect on feed rates if you have used which of the following program codes

Answer 17

G94 feed per minute

Question 18

The best time to use a block skip function would be when

Answer 18

It is desirable to Omit an optional part profile

Question 19

A number of different workpiece locations can be designated as part 0 through the use of work shift commands. Which following statement is most accurate?

Answer 19

Workpiece shift is generally associated with locations in the xy-plane, but can also include the Z plane as well

Question 20

Which code line would ensure the safest operation?

Answer 20

N100 G54 G00 X0 Y0

N120 G00 Z1.0

Question 21

Which of the following words can perform the following three functions?
Eliminate chatter at bottom of a hole
Ensure the spindle has stopped before reversing
Ensure completion of miscellaneous functions

Answer 21

G04

Question 22

It’s common to send the tool to machine home at the end of a program. Which block of information perform this operation in the safest and most efficient way?

Answer 22

N100 G00 G28 G91 X0 Y0
N120 Z0
N130 G90