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Helmholz’ TB20 distributed I/O fieldbus system is characterized by many everyday practical details developed upon direct market feedback. The TB20 innovative system allows for implementing typical advantages of decentralized concepts in many, often even new applications. The product range comprises PROFINET®, PROFIBUS®, and CANopen® ,Modbus ,EtherNet/IP ® and EtherCAT® bus couplers with analogue, digital inputs, outputs and special function modules.