What command is used to turn the coolant on?

The command used to turn the coolant on is M8. In the context of CNC programming, M-codes control various machine functions, and M8 specifically corresponds to activating the coolant system. When this command is executed, it allows coolant to flow to keep the tooling and workpiece cool during the milling process, which helps to improve tool life and finish quality.

The other commands have different functions. For instance, M9 is used to turn off the coolant, while M7 is used for mist coolant systems in some programming environments, and M6 is utilized for tool changes. Understanding these M-codes is crucial for effective CNC programming and operation, ensuring that the machine runs efficiently and reduces the risk of overheating during machining processes.