Evaluation systems with field bus interface are industrial automation solutions offered by various global companies, including Siemens (Germany), Rockwell Automation (USA), and Schneider Electric (France). These systems provide advanced monitoring, control, and diagnostics for industrial processes, primarily serving sectors like manufacturing, energy, and transportation. Key products include programmable logic controllers (PLCs), human-machine interfaces (HMIs), and communication modules compatible with fieldbus protocols such as PROFIBUS, Modbus, and DeviceNet. These solutions enhance operational efficiency and real-time data integration in industrial environments.