Good thing our system isn't built like that.
From several machines I could then shut down the entire plant, cause I can see the entire plant from there.
Not to mention some of those machines require e-stop being pressed when changing setpoints on the servor drives. (needs drive inhibit to accept changes)
Change setpoint 2 mm, wait, lemme just shutdown the entire plant for that.
Had a similar system installed though. A lift at the end of each production line, which takes the products to palltizers on a different floor and also not visible because there's a wall blocking the view.
E-stop on lift/elevator would stop the entire system.
Only did that once.
Let us not forget what an EMERGENCY STOP system is SUPPOSED to be designed for, and forget about what you ACTUALLY use them for.