![]() At least it knows that is the spot to the accuracy of whatever kind of switch is being used. At that point, it knows that is the machine’s 0 on that axis. When you do this, Mach knows to move the mill axis in the positive direction until exact instant the home switch closes and then back off slightly until it opens again. When you have home switches, you simple press the “Ref” button to reference an axis, or “Ref All” to reference all axes. This typically meant getting out the edge finder and trying to locate some feature of the part I was making. If a servo faults, if I hit the E-Stop, or if I just wanted to shut down for the night, I would have to come back and find a way to precisely realign the machine with where it should be. ![]() Every time you shut off the mill it loses track of its position.
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