Siemens PLCs7200 hardware and working principle

Common PLC brands such as Mitsubishi and Siemens are widely used in industrial automation. Among them, Siemens S7-200 is one of the most popular models, known for its reliability and ease of use. Understanding its hardware structure and working principles is essential for anyone involved in automation systems.

The S7-200 series includes various models, each designed for different application needs. These controllers typically consist of a central processing unit (CPU), power supply, input/output modules, and communication interfaces. The CPU handles program execution, while I/O modules connect to sensors and actuators to control real-world processes.