Automation of transport system model using programmable logic controller S7-1200 in programming language SCL

Automatizacija transportnog sustava izvedena je u softveru TIA Portal, u programskom jeziku SCL, korištenjem programirljivog logičkog kontrolera S7-1200. Transportni sustav automatski provodi proces obrade predmeta, ali ne smije započeti novi proces prije nego je prethodni završio. Program je podijeljen u četiri dijela – početna traka, glodalica, bušilica, završna traka. Fotosenzori, sastavljeni od fototranzistora i žarulje, su ravnomjerno raspoređeni na pet strateških mjesta u sustavu i omogućuju stalno praćenje položaja predmeta. Klizači služe za pomicanje predmeta između traka, a graničnici ograničavaju njihovo kretanje. U kodu su korištene već određene memorijske i globalne adrese te privremene varijable.Automation of transport system model is completed in TIA Portal software, in programming language SCL by programmable logic controller S7-1200. Transport system is automatically processing the object, but it can't start the new process untill previous one is finished. Program is divided in four main parts – starting conveyor, milling cutter, drill, finishing conveyor. Photosensors, made of phototransistors and lightbulbs, are equally divided on five strategic spots in system and they are enabling continous tracking of object's position. Pusher units are made for moving object between conveyors and stops are restricting pusher units' movement. Already determined global and temporary adresses with temporary variables are used in this code