In what year was the Modbus protocol introduced?

The Modbus protocol was introduced in 1979. This protocol was developed by Modicon, now a part of Schneider Electric, as a way to conduct communication between industrial devices. Modbus has become one of the most widely used protocols for communications in industrial environments, especially in SCADA (Supervisory Control and Data Acquisition) systems.

Understanding the correct timeline of Modbus's introduction is essential for professionals in the field, as it informs them about the evolution of communication standards in industrial automation. From its inception, Modbus has influenced numerous other communication protocols and frameworks. Recognizing the year 1979 helps contextualize its role in the development of later protocols and technologies that facilitate interoperability in industrial control systems.