![]() ![]() G-code move commands are interpreted according to this coordinate system. One or more Work coordinate systems (WCS), which are set manually.The Machine coordinate system, representing the toolhead position across the entire working area.With limit switches, the firmware will keep track of at least two separate coordinate systems: This way, even if after shutting down the machine or if the motors skip steps, re-homing will restore the correct coordinates. This works by slowly moving each axis until they trigger a limit switch, which marks the zero position. Homing is a way for the controller to reliably know the physical location of the gantry. Prevent skipped steps or even damage to the frame, motors, or other parts of the machine.Why use limit switches?Ī limit switch is a way of physically detecting when an axis reaches the limit of its travel and automatically stop the machine. However, it takes a few steps to set them up properly, so let’s see how to do it. I later learned my mistake, as these small unassuming guys can save time and even prevent costly accidents. ![]() However, as a beginner I overlooked them. Limit switches (also known as end stops) are a simple, cheap and useful addition to any CNC machine. ![]()
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