Elumatec SBZ 130/01 retrofit

No idea, i built a NAS last year, so i can not recal if i moved the files there from the phone.
If i do find them, i will let you know.

Nope, not on the NAS.
I have to check some 15 USB drives and 3 phones as i get the chance ...

On the left side of the head is a small lid, remove it and check the worm gear inside.
Mine was badly worn so it would sometimes miss the exact position and fail to lock.
When locked manually, it never moves.
And yes it does use a clutch, it is very hard to access it and mine was worn badly so the tools would change even with it locked.
Despite all that, it is still in daily use, all day long, but the tool changer gets rarely used, drills and mills are the only tools they need.

Yes, if i recall correctly, that is one sensor for the toolchanger that tells the motor when to stop spinning, it also uses 4 more sensors in gray scale mode for counting the tools.
As for PLC, i never use them, nor do i plan to.
I use exclusively Mesa for everything, and no, i am not affiliate nor do i have any relations to them, their boards just work, 24/7 for years on end without a single issue ever, and their support is the best on planet earth, as you can find out on this topic/thread, i needed non standard firmware for the existing absolute encoders and got it from them the next day, Try that with any other company....