I just realized that I may be missing some power supplies! I thought the guys before me had handed me everything, but it seems I only have 2 supplies for the rev pi, and that I need another one for the actuator. So I wont delete this in case I actually have been really wrong about the wiring (i have...

Hi there! I am doing a project and I am kind of stuck because of little knowledge of relays and PLC's. I have only done 1 year at the university, but this is a project I continue that originally were meant for people having finished 3 years. I have read books, watched youtube, but I still seem to be...