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.
NO_PINThis is used to control a mist coolant device. M7 turns mist coolant on and M9 turns it off.
NO_PINThis is used to control a flood coolant device. M8 turns flood coolant on and M9 turns it off.
0The delay in milliseconds after the turn on of M7 and M8. It will not delay if that coolant is already on. It does not delay with M9.
coolant:
flood_pin: gpio.14
mist_pin: NO_PIN
delay_ms: 0