German Digitronic plug, Digitronic model, Digitronic price

Digitronic plug is a connector used to connect serial and parallel cables to a data bus. The naming format for data bus connectors is DB-x, where x represents the number of wires inside the connector. Each wire is connected to a pin in the connector, but in many cases, not all pins are assigned a function. Data bus connectors are defined by various EIA/TIA standards. It is a type of connector used to connect serial and parallel cables to a data bus. DB connectors are named in the DB-x format, where x represents the number of (wires) inside the connector. Each wire is connected to a pin in the connector, but in many cases, not all pins are assigned a function. DB connectors have 9, 15, 25, 37, and 50 pin sizes. DB connectors define the physical structure of the connector, not the purpose of each wire. For example, DB-9 has 9 pins and is used to connect a mouse. DB-25 has 25 pins and is used to connect a printer.

Digitronic Plug Introduction

As automation technology has evolved from standalone machine control to Factory Automation FA and then to system automation, the factory automation information network can be divided into the following three-layer structure: factory management level, workshop monitoring level, and field device level. Fieldbus is the communication network between devices at the factory bottom layer. Here we first introduce Ethernet, specifically Industrial Ethernet. Industrial Ethernet is an industrial network protocol derived from the office automation domain; by convention, it mainly refers to the IEEE 802.3 protocol. If the TCP/IP protocol suite is further adopted, it is expressed as "Ethernet + TCP/IP". Its technical characteristics are mainly suitable for information management and information processing systems, and it has achieved great success in the IT industry. In the field of information integration at the factory management level and workshop monitoring level, there are many successful cases of Industrial Ethernet, and there are also many applications at the device layer where real-time performance is not strictly required. Due to the wide variety of fieldbuses and inconsistent standards, many people hope that Ethernet technology can intervene at the lower device layer and widely replace existing fieldbus technologies. Schneider Electric is an active advocate and practitioner of this idea, with a range of industrial-grade products already available and put into practical application. However, since Ethernet cannot truly solve real-time and determinism issues, most field layers will still prefer fieldbus technology. Due to technological limitations and conflicts of interest among various manufacturers, the current situation of coexistence of multiple industrial bus technologies and continuous penetration of Ethernet technology will persist for some time. Users can choose the required solution based on technical requirements and actual conditions.

Digitronic Plug Classification

Industrial bus networks can be categorized into three types: 485 network, HART network, and FieldBus fieldbus network. 485 network: RS485/MODBUS is a popular industrial networking method, characterized by simple and convenient implementation, and there are particularly many instruments supporting RS485. Instrument manufacturers have also turned to support RS485/MODBUS for a simple reason: RS485 conversion interfaces are not only inexpensive but also diverse. At least in the low-end market, RS485/MODBUS will remain the primary industrial networking method. HART network: HART is a transitional bus standard proposed by Emerson, mainly characterized by superimposing digital signals on the 4-20 mA current signal. However, this protocol is not truly open; one must join its foundation to obtain the protocol, which requires a certain fee. HART technology is mainly monopolized by several large foreign companies. In recent years, domestic companies have also been working on it, but they have not yet reached the level of foreign companies. Many smart instruments come with [HART round card] and support HART communication functions. However, from the domestic perspective, this part of the functionality has not been truly used for device networking and monitoring; at most, handheld configurators are used to set parameters. In the long run, due to reasons such as low HART communication speed and difficult networking, the application of HART instruments will show a downward trend. FieldBus fieldbus network: Fieldbus is one of the hot technologies in the automation field today, hailed as the computer local area network in the automation field. Its emergence marks the beginning of a new era in automation control technology. Fieldbus is a digital, serial, multi-station communication network connecting instruments at the control site with control devices in the control room. Its key hallmark is the ability to support bidirectional, multi-node, bus-style fully digital communication. Fieldbus technology has become a hotspot in the development of international automation and instrumentation. Its emergence has brought revolutionary changes to traditional control system structures, further advancing automatic control systems towards "intelligence, digitization, informatization, networking, and decentralization," forming a new type of network-communication-based fully distributed control system—the Fieldbus Control System FCS (Fieldbus Control System). However, fieldbus has not yet formed a truly unified standard. Multiple standards such as ProfiBus, CANbus, and CC-Link coexist, each with its own niche. When unification will occur remains uncertain. There are relatively few types of instruments supporting fieldbus, limited choices, higher prices, and smaller usage volumes.

Digitronic Plug Operation

A bus operation process completes the transmission of information between two modules. The master module initiates the operation process, and the other is the slave module. At any given moment, only one master module can occupy the bus. Bus operation steps: The master module requests bus control rights, and the bus controller makes the arbitration. Error checking during data transmission: After the master module obtains bus control rights, it addresses the slave module, and data transmission occurs after the slave module confirms. Bus timing protocols: Timing protocols ensure synchronized operations between both parties in data transmission and correct transmission. There are three types of timing protocols: Synchronous bus timing: All modules on the bus share the same clock pulse for controlling the operation process. The generation of all actions of each module occurs at the start of the clock cycle, and most actions are completed within one clock cycle. Asynchronous bus timing: The occurrence of an operation is determined by specific signals from the source or destination module. The occurrence of an event on the bus depends on the occurrence of the previous event, with both parties providing handshake signals to each other.

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