German Selectron plug Selectron model Selectron price

Selectron plug is a standardized method for exchanging data (data) between computer components, providing data transmission and control logic to each component in a universal way. From another perspective, if the motherboard (Mother Board) is a city, then the bus is like the public buses (bus) in the city, transmitting bits (bit) that operate back and forth along fixed routes. Each of these lines can only transmit one bit at a time. Therefore, multiple lines must be used simultaneously to send more data, and the amount of data that the bus can transmit simultaneously is called width (width), measured in bits; the greater the bus width, the better the transmission performance. The bus bandwidth (i.e., the total amount of data that can be transmitted per unit time) is: Bus Bandwidth = Frequency × Width (Bytes/sec).

Selectron plug composition

The fieldbus control system consists of three parts: measurement system, control system, and management system, with the hardware and software of the communication part being its most distinctive feature. 1) Fieldbus control system: Its software is an important part of the system. Control system software includes configuration software, maintenance software, simulation software, device software, and monitoring software. First, select development configuration software and human-machine interface software for control operations. Through the configuration software, complete the connections between function blocks, select function block parameters, and perform network configuration. During network operation, collect real-time data from the system, process data, and perform calculations. Optimize control and logical control alarms, monitoring, display, reports, etc. 2) Fieldbus measurement system: It features multi-variable high-performance measurement, enabling measuring instruments to have computing capabilities and other functions. Due to the use of digital signals, it has high resolution, high accuracy, strong anti-interference, and anti-distortion capabilities. It also provides status information of instrument equipment, allowing adjustments to the processing process. 3) Equipment management system: It can provide diagnostic information, management information, equipment operating status information (including smart instruments), and manufacturer-provided equipment manufacturing information for the equipment itself and the process. For example, Fisher—Rosemoune Company launched the AMS management system, which is installed in the main computer to perform management functions. It can form a comprehensive management system information library for field devices, based on which equipment reliability analysis and predictive maintenance are realized. This changes the passive management mode to a predictable management and maintenance mode. The AMS software is based on a T architecture with the field server as the platform, supporting modular, feature-rich application software on the field server to provide users with a graphical interface. 4) Bus system computer service mode: The client/server mode is a popular network computer service mode. The server represents the data source (provider), and the application client represents the data user, which obtains data from the data source and processes it further. The client runs on a PC or workstation. The server runs on a minicomputer or mainframe, using the intelligence, resources, and data of both parties to complete tasks. 5) Database: It can organically and dynamically store large amounts of data related to applications, achieving full data sharing and cross-access with high independence. Industrial equipment parameters change continuously during operation, resulting in large data volumes and high real-time requirements for operation and control. Therefore, a distributed and real-time database system capable of mutual access and operation is formed. Mature options available on the market include relational databases such as Oracle, sybas, Informix, SQL Server; and real-time databases such as Infoplus, PI, ONSPEC. 6) Network system hardware and software: Network system hardware includes system management hosts, servers, gateways, protocol converters, hubs, user computers, and underlying intelligent instruments. Network system software includes network operating software such as NetWarc, LAN Mangger, Vines, server operating software such as Lunix, os/2, Window NT, application software databases, communication protocols, network management protocols, etc.

Selectron plug features

Field control devices feature communication capabilities, facilitating the construction of factory-level control networks. The openness and consistency of communication standards ensure system openness and interoperability between devices. Standardization of function blocks and structures enables interchangeability among devices with identical functions. Decentralizing control functions to the field level provides the control system architecture with a high degree of distribution. Fieldbus technology integrates automation devices and systems into information networks, opening up broader application areas; multiple control devices can be connected on a single twisted pair, reducing installation costs; lowering maintenance expenses; improving system reliability; and providing users with greater flexibility in system integration.

Selectron plug data exchange method

Data Bus (DataBus). It standardizes methods for data sharing and exchange in homogeneous and heterogeneous systems within a large integrated application system, serving as a standard for data exchange between systems. It can be used to transmit information between microprocessors and memory, and between microprocessors and input/output interfaces. The width of the data bus is an important indicator determining computer performance. Most microcomputers have data buses that are 32-bit or 64-bit. 1) Business entity data exchange: Each subsystem has a business entity layer in its architectural hierarchy. The data exchange mechanism establishes a layer transparent to all application systems at the business entity layer. Between subsystems, regardless of the specific technical implementation, sharing and interaction can occur through the business entity layer, establishing a structure for continuous integration and business expansion between subsystems, thereby realizing a scalable, complete, integrated information system. 2) WebService data exchange: It is a Web service standard. Web services provide solutions for sharing and exchanging data between heterogeneous systems and can also be used for data sharing and exchange using unified interface standards in product integration.

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