When discussing SCADA (Supervisory Control and Data Acquisition) systems, it is important to acknowledge that there are multiple components that play crucial roles in their operation. These components work together seamlessly to ensure the smooth functioning of the SCADA system. One essential component is the Human-Machine Interface (HMI), which allows operators to interact with the SCADA system. The HMI provides a user-friendly interface through which operators can monitor and control various processes. Another key component is the Remote Terminal Unit (RTU) or Programmable Logic Controller (PLC). These devices serve as intermediaries between field devices, such as sensors and actuators, and the central SCADA server. They collect data from these field devices and transmit it to the central server for processing. Furthermore, communication networks are vital components of SCADA systems. These networks enable seamless data transmission between different components of the system. Common network protocols used in SCADA systems include Ethernet, Modbus, DNP3, and Profibus. Data acquisition plays a significant role in SCADA systems as well. Through specialized hardware and software modules, data from various sensors and devices is collected in real-time. This data provides valuable insights into the operational status of equipment and processes. Lastly, but certainly not least important, is the central server or master station. This component acts as the brain of the entire SCADA system by collecting, processing, analyzing, and displaying data received from RTUs or PLCs. It provides operators with comprehensive information regarding process statuses and alarms. In summary, a well-designed SCADA system consists of several key components including HMIs for operator interaction, RTUs/PLCs for interfacing with field devices, communication networks for seamless data transmission, data acquisition modules for real-time monitoring, and a central server/master station for comprehensive control and analysis. Understanding these various components is essential when implementing or working with SCADA systems effectively. The three main components of a SCADA system are the supervisory computer, remote terminal units (RTUs), and communication infrastructure. The supervisory computer serves as the central hub where data is collected, monitored, and analyzed. The RTUs are responsible for gathering data from field devices and transmitting it to the supervisory computer. Lastly, the communication infrastructure ensures seamless data exchange between the different components of the SCADA system.