SAE J1939 is a standardized communication protocol used in heavy-duty vehicles and equipment. It enables different electronic control units (ECUs) to exchange information, ensuring compatibility and interoperability among various manufacturers. This protocol is widely used in industries such as agriculture, construction, and transportation. The SAE J1939 standard operates over a Controller Area Network (CAN) bus, allowing real-time data transmission. It defines message formats, data parameters, and network management, facilitating efficient monitoring and control of vehicle systems. This helps improve performance, diagnostics, and maintenance of heavy-duty machinery.