Next: Modal Codes Up: 10.7 Basic Motion and Previous: Feedrate and feed modes Contents Index

## Miscellaneous words

M words are used to control many of the I/O functions of a machine. M words can start the spindle and turn on mist or flood coolant. M words also signal the end of a program or a stop withing a program. The complete list of M words available to the RS274NGC programmer is included in table 5.

M0 | Program stop
M1 | Optional program stop
M2 | Program end
M3 | Turn spindle clockwise
M4 | Turn spindle counterclockwise
M5 | Stop spindle turning
M6 | Tool change
M7 | Mist coolant on
M8 | Flood coolant on
M9 | Mist and flood coolant off
M26 | Enable automatic b-axis clamping
M27 | Disable automatic b-axis clamping
M30 | Program end, pallet shuttle, and reset
M48 | Enable speed and feed overrides
M49 | Disable speed and feed overrides
M60 | Pallet shuttle and program stop

Table 5 M Word List

Next: Modal Codes Up: 10.7 Basic Motion and Previous: Feedrate and feed modes Contents Index