Appunti:
https://www.se.com/it/it/product-range/531-zelio-logic/
Software: https://www.se.com/it/it/product-range/542-zelio-soft/#overview
https://www.youtube.com/playlist?list=PLmnFmQ1gO3xmojDdYko0PNA1U5-pYe6q6
https://www.slideshare.net/ICTperspectives/siemenss71200plc
