Implementation of an on-line supervision system for scheduling and controlling a production plant

This paper focuses on the definition of a supervision and data acquisition system in a manufacturing plant. In particular, the work here presented refers to the implementation of a SCADA system in a company which produces components by injection molding. The supervision and data acquisition system is based on an electronic structure connecting the production machines with the supervision computer where all the production and management data are collected and treated by a suitable software (MES). Different solutions have been analyzed; the one implemented is based on a PLC logic and it is also the cheapest one able to guarantee the future expansion to additional production machines.