【Control Version】One Question per Day 20180414

It refers to a computer network that connects field devices with industrial control units, field operation stations, etc., featuring full digitization, decentralization, two-way data transmission, and multiple branches; it is the result of the development of industrial control networks towards the field level.

A field bus refers to a digital, serial, multi-point communication data bus that connects field devices installed in manufacturing or process areas with automated devices located in the control room.

A fieldbus refers to a network based on digital communication between measurement and control devices within a factory, also known as a field network

A field bus refers to a network based primarily on digital communication between measurement and control devices within a factory, also known as a field network. It is a network that specializes in the communication between sensors, various operation terminals, and controllers, as well as the communication among controllers themselves.

A fieldbus replaces the transmission of traditional 4-20mA analog signals and conventional digital on/off signals with digital communication; it is a fully digital, two-way, multi-station communication system used to connect intelligent field devices to automation systems.

①Definition of fieldbus: A fieldbus is a \"fully digital, two-way, multi-variable, multi-point communication system\" used between field instruments and the control room. Its essential characteristics are reflected in the following six aspects: field communication network, interconnection of field devices, interoperability, decentralized functional modules, and open interconnection networks. ②Advantages of fieldbuses: It enables fully digital communication as well as interoperability between products from different manufacturers； True distributed control (decentralized control) has been achieved: it is possible to transmit multiple process variables simultaneously, along with instrument identifiers and basic diagnostic information; this enables the creation of state-of-the-art field instruments and multi-variable transmitters ； Improved test accuracy ； It enhances the autonomy of the system. ③Several influential fieldbus technologies: LonWorks, also known as LON (Local Operating Network), is a widely used fieldbus developed by the American company Echelon. It utilizes all seven layers of the ISQ/OSI communication model, adopts an object-oriented design approach, and simplifies network communication through network variables to a parameter-based design, making it widely used in smart buildings ； CAN(Cont rol A

It refers to a computer network that connects field devices with industrial control units, field operation stations, etc., featuring full digitization, decentralization, two-way data transmission, and multiple branches; it is the result of the development of industrial control networks towards the field level.

It is an open, fully digital, two-way, multi-station communication system used between field electrical devices, field instruments, and field equipment on one hand, and the main system in the control room on the other

A field bus is an industrial data bus that has seen rapid development in recent years. It is primarily used to address digital communication between intelligent instruments, controllers, actuators, and other field devices in industrial settings, as well as the transmission of information between these field control devices and higher-level control systems

It refers to a computer network that connects field devices with industrial control units, field operation stations, etc., featuring full digitization, decentralization, two-way data transmission, and multiple branches; it is the result of the development of industrial control networks towards the field level.