The belt is the main component of CP Lab and is used to transport the workpiece carriers (WT) to the next working position. The workpiece carriers are detected by capacitive sensors at the start and end of the belt. The workpiece carriers are equipped with RFID tags for storing workpiece-specific data. An RFID read/write system that communicates with the controller via an IO-Link® interface is responsible for exchanging data with the workpiece carrier. The CP Lab basic module is equipped with a PLC and all the necessary interfaces to be supplemented by application modules and to communicate with the MES.