These are output pins controlled by M7, M8 and M9. They are traditionally called mist and flood, but many people use them for other things like dust extraction, etc. M9 turns both off. There is no way to only turn one off.
- mist_pin:
- Type: Pin (output)
- Range: gpio or I2SO
- Default: NO_PIN
- Details: This is used to control a mist coolant device. M7 turn mist coolant on and M9 turns it off.
- flood_pin:
- Type: Pin (output)
- Range: gpio or I2SO
- Default: NO_PIN
- Details: This is used to control a flood coolant device. M8 turn flood coolant on and M9 turns it off.
- delay_ms:
- Type: Integer
- Range: 0 to 10000
- Default: 0
- Details: The delay in milliseconds after the turn on and turn off before more gcode will run.
coolant:
flood_pin: gpio.14
mist_pin: NO_PIN
delay_ms: 0