Imagine trying to have a conversation with a person that doesn't speak the same language as you. In turn, master stations receive status updates, analog readings, and general data from RTU boxes. An RTU accepts commands from master stations to operate control points, set analog output levels, and provide responses. These devices are mainly a master station and a Remote Terminal Unit (RTU). In a Supervisory Control and Data Acquisition (SCADA) system, there is a lot of communication between devices.
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