CNC
M-CODES
Computer
Numerical
Control
 Computer numerical control (CNC) is a manufacturing
method that automates the control, movement and precision
of machine tools through the use of preprogrammed
computer software, which is embedded inside the tools.
 It operates based on specific language the system
understands to complete certain task.
4/22/2023
Annual Review
2
M-CODES
 M-code is a part of the language that AUTOCAD and
CAM, computer aided manufacturing, use to input
instructions into CNC machines.
 M-codes, miscellaneous or machine codes, controls the
operations of equipment telling it when to operate or
cease operation.
 Directing non-cutting operations
4/22/2023
Annual Review
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M-CODES
 During programming, one M-code is required per code block
giving the commands for a tool to turn on or off and activate
other operations
 M-codes provide data for a machine‘s actions.
4/22/2023
Annual Review
4
M-CODES
 The M in m-code tells the machine that a miscellaneous command
follows.
 SPINDLE

M06 Tool Change

M07 Tap Oil On
COOLANT CONTROL
 COOLANT
 M07
 M08
4/22/2023
Annual Review
 M09
5
M-CODES
 The M in m-code tells the machine that a miscellaneous command
follows.
4/22/2023
Annual Review
6
M-CODES
 The M in m-code tells the machine that a miscellaneous command
follows.
4/22/2023
Annual Review
7
M-CODES
 The M in m-code tells the machine that a miscellaneous command
follows.
4/22/2023
Annual Review
8