They will not be used, until you define a spindle. If your machine does not have a spindle, for example, you will still see and be able to set spindle settings. The number settings is not dependent on your machine definition. Otherwise the line is treated as a command or setting. When you enter a line of text to Grbl_Esp32, if the line does not start with either $ or [, the line is handled by the GCode interpreter. For example, the number of axes that are configured in the build affects the presence of certain axis settings. The list that is displayed depends on the build options that were used when Grbl_Esp32 was compiled. You can get a list of commands with either $commands/list or $cmd. You can get a list of settings by typing $settings/list - or just $s - in a Grbl serial console. ![]() An example command is "start a homing cycle". Commands are actions that happen immediately, without affecting long-term behavior. ![]() They maintain their values when power is off, so when you change a value, the new value persists across reboots and power cycles. Settings are options that affect the behavior of Grbl_Esp32.
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