inished cartons are then transported to the filling machines via a clever carton logic system resembling a shunting yard. The various tea specialties are sorted into the arriving packages at the filling machines.Multiple light barriers, valves and motors help control this fully automatic process.CONTROL SYSTEMA PC controls the carton sealer utilizing the standardized IEC 1131-3 programming language. This type of program is based on high-level languages and permits the user program to be represented in a manner familiar to any PLC programmer, for example – as a standardized instruction list, ladder diagram or function block. The final packaging station is also controlled by INTERBUS.INTERBUS smart terminal I/O modules pickup the signals from the jam light barriers as well as the contactors which are also decentralized and used for activating the conveyor belt motors.I