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Fieldbus is an industrial network protocol family used for real-time communication and control of field devices such as sensors, actuators and controllers in industrial automation applications. Fieldbus systems enable efficient and reliable communication between different devices and control systems in a manufacturing environment.

The main features of Fieldbus are

Real-time communication: Fieldbus protocols support fast and deterministic transmission of data, which is crucial for time-critical control applications.
Decentralized control: Allows the distribution of control functions to different field devices, reducing the load on central control systems.
Two-way communication: Provides bi-directional communication capabilities that allow data to be both sent and received, enabling better monitoring and control.
Device interoperability: Supports the integration of devices from different manufacturers as long as they use the same Fieldbus protocol.

The benefits of Fieldbus include:

Reduced cabling effort: Minimization of cabling effort compared to conventional point-to-point connections, resulting in lower installation and maintenance costs.
Increased flexibility: Easier to adapt and expand the network when changing or expanding the system.
Improved diagnostics and maintenance: Enables remote monitoring and diagnostics of devices, simplifying maintenance and troubleshooting.
Increased reliability: Robust and reliable communication protocols specifically designed for industrial environments.

Fieldbus protocols include various standards such as Profibus, Foundation Fieldbus, DeviceNet, Modbus and CANopen. These protocols are used in various industries such as manufacturing, process, automotive and power generation to ensure efficient and reliable automation and control.

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