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Originally Posted by Greg Needel
if the system is decently designed and tested you should be abel to have them calibrated with little error.
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The main reason we use limit switches is to prevent damage. Despite my many warnings, people have, on occasion, decided to forego the implimentation of limit switches to save themselves some time. Needless to say, it usually ends badly. The limit sensor tells you when it's time to stop. Maybe something got jammed. Maybe something broke. Maybe there was a design oversight. It doesn't matter how the system got into that position, but going further could damage it.