[ratdude747]

Originally Posted by Ether

I believe what Rule R58-J is saying is that you can simply connect the limit switch to the Jag. That is a "custom circuit".

Correct.

The reason they said "custom" circuit is that in spirit of the rule, it could be anything from a simple limit switch to some crazy ultrasonic circuit. You could even pop in a toggle switch for the rule cares.

However, if the lift is like some I've seen/built, then you may have more than two switches involved (like one for each intermediate point used). In that case, then you would have to do at least some of the switches in software, as the jag is only good for two switches.

Generally those two are designed to be your high and low points; these are the points where if you were to overshoot it by a considerable margin very bad things would happen (like stripping a gearbox, breaking an arm joint, accidentally firing a ball, etc.) However, if you choose to split your switches between hardware and software, there is no "wrong" answer in terms of functionality.