PROFIBUS (Process Field Bus) is a standard for fieldbus communication in industrial automation. It enables devices like sensors and actuators to communicate with control systems, facilitating efficient data exchange in manufacturing processes. There are two main types of PROFIBUS: PROFIBUS-DP for fast communication in factory automation, and PROFIBUS-PA for process automation in hazardous environments. This technology helps improve system reliability and reduces wiring complexity, making it easier to manage large networks of devices.