Suder, KrzysztofDaniel, KrzysztofGuguła, KonradJanik, GrzegorzKamiński, ŁukaszKoczot, AndrzejJabłońska, MagdalenaRaczyński, ŁukaszRuszel, MarekWiniarz, Mateusz2018-01-112018-01-112014http://rifj.ifj.edu.pl/handle/item/102The goal of this report is to present to possibility of modernization of AIC-144 cyclotron's safety systems. The actual status is described and possible solution offered. The core of the new safety system is Siemens Simatic S7-200 PLC which delivers satisfactory quantity of I/Os and also allows further development by ie. implementing Ethernet communication and control over the remote program. The methodology of control algorithms construction is also presented.polReport