M Codes

detailed information on the m codes you can use will go here. we'll also add replicatorg specific definitions here as well. until then, please see the primer.

The following extra M-Codes were defined for RepRap:

  • M101 Extruder on, fwd
  • M102 Extruder on, reverse
  • M103 Extruder off
  • M104 Snn set temperature in degrees Celsius
  • M105 get extruder temperature
  • M106 turn fan on
  • M107 turn fan off
  • M108 Snnn extruder speed in PWM
  • M108 Pnnn extruder speed in RPM
  • M120, M121, M122 Snnn set the PID gain for the temperature regulator
  • M123, M124 Snnn set iMax and iMin windup guard for the PID controller
  • M126 valve open
  • M127 valve close

more codes exist now for controlling build platform temperature, case temperature, a second extruder, and for controlling stepper motors on extruders.

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