Since the emergence of the first fieldbus systems in the 1980s, the landscape of industrial communication has changed enormously - and the variety of different communication protocols has increased significantly. Many manufacturers of automation technologies and systems developed their own communication protocols and attempted to establish them on the market. Even back then, this led to a wide variety of protocols - from PROFIBUS to Modbus, DeviceNet, CC-Link, ControlNet, CANopen or FOUNDATION Fieldbus. Depending on the region and application, these are still used today and therefore have their raison d'être.
This development was repeated in the course of the establishment of Industrial Ethernet, which led to a renewed increase in protocol diversity. With RTE protocols such as PROFINET, EtherCAT, EtherNet/IP, Ethernet POWERLINK and Sercos III, the organizations behind the fieldbuses once again developed proprietary systems.
This diversity and the lack of interoperability between the individual protocols means additional work for manufacturers of automation components and systems as well as for plant engineers and end users in the development and use of automated devices.
Multiprotocol capability, i.e. the ability to map different protocols with one and the same hardware without complex adaptations, has therefore become a key capability in industrial communication.