Ok so they are NC type to cover the issue of broken wires etc.
So the black wire will normally be at supply voltage until limits are hit.
I'm planning on wiring each to its own limit input on axbbe as there are 6 available, leaving a couple for probes and future use.
So imagining just one switch in my diagram above , l1+ will always be 24v and l1- would be at 24v normally unless switch triggered.
Is that right ?
Thanks !