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For example, the DeltaV system launched by Fisher Rosemount adopts this integration solution The integration of fieldbus in the network layer of DCS system refers to the integration of fieldbus system on a higher level network of DCS. This integration method does not require changes to the DCS control station and has little impact on the original system.

For example, Smar’s 302 series fieldbus products can integrate their fieldbus functions in the DCS system network layer The fieldbus is integrated in parallel with the DCS system through a gateway – the fieldbus and DCS can also be bridged through a gateway to achieve parallel integration. For example, SUPCON’s fieldbus system utilizes a HART protocol bridge to connect the system operation station and field instruments, thereby achieving communication between the fieldbus device management system operation station and the HART protocol field instruments.

The focus of DCS has always been on control, with the keyword ‘decentralized’. However, modern development focuses more on comprehensive management of the entire system information, and in the future, “integration” will become its key word, moving towards the direction of comprehensive automation of control systems, operation systems, planning systems, and management systems

The implementation of real-time control and optimization control from the lowest level will rise to production scheduling, business management, and even strategic decision-making at the highest level, forming a flexible and highly automated integrated control system.

Examining the hierarchical structure of DCS, the DCS level and control management level are the two most basic components that make up DCS.

The process control level specifically implements decentralized control functions such as signal input, transformation, operation, and output. In different DCS, the control devices at the process control level are different,