Mcodes

See also Gcodes

##Mcode Summary

Mcode | Parameter |Command | Description
------|-----------|--------|-------------
M0 | | Program stop |
M1 | | Program stop | Optional program stop switch is not implemented so M1 is equivalent to M0
[M2](#m2-m30-program-end) | | Program end |
[M30](#m2-m30-program-end) | | Program end |
M60 | | Program stop |
M3 | S | Spindle on - CW | S is speed in RPM
M4 | S | Spindle on - CCW | S is speed in RPM
M5 | | Spindle off |
M6 | | Change tool | No operation at this time
M7 | | Mist coolant on | Note that mist and flood share the same Coolant ON/OFF pin
M8 | | Flood coolant on | Note that mist and flood share the same Coolant ON/OFF pin
M9 | | All coolant off | Note that mist and flood share the same Coolant ON/OFF pin

##M2, M30 Program End program END (M2, M30) performs the following actions:

• Axis offsets are set to G92.1 CANCEL offsets
• Set default coordinate system (uses $gco)
• Selected plane is set to default plane ($gpl)
• Distance mode is set to MODE_ABSOLUTE (like G90)
• Feed rate mode is set to UNITS_PER_MINUTE (like G94)
• The spindle is stopped (like M5)
• Motion mode is canceled like G80 (not set to G1)
• Coolant is turned off (like M9)
• Default INCHES or MM units mode is restored ($gun)