German BRADY plug, BRADY model, BRADY price

BRADY 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.

BRADY Plug Introduction

Fieldbus technology is the intersection and integration of control, computer, and communication technologies, covering almost all continuous and discrete industrial fields, such as process automation, manufacturing automation, building automation, home automation, and so on. The development of fieldbus technology is reflected in two aspects: one is the continuous development and improvement in the low-speed fieldbus domain; the other is the development of high-speed fieldbus technology. Fieldbus products are mainly low-speed bus products, applied in domains with lower operating rates, where network performance requirements are not very high. From the perspective of practical application, most fieldbuses can effectively implement process control with lower rate requirements. Therefore, in control domains with lower rate requirements, it is difficult for any single entity to unify the entire market. Since the FF Foundation has gathered most of the world's major automation instrument manufacturers, its global influence is increasing day by day, but its marketing efforts in China seem insufficient, and its market share is not very high. LonWorks has formed a comprehensive system of division of labor and cooperation, achieving some substantive progress domestically. In areas such as building automation, home automation, and smart communication products, LonWorks possesses unique advantages. In the discrete manufacturing and processing sector, due to the characteristics of industry applications and historical reasons, Profibus and CAN have established their own advantages in this field and possess strong competitiveness. Domestic manufacturers are relatively small in scale and have weaker R&D capabilities, relying more on support from technology suppliers. They are easily influenced by the level of support and marketing efforts provided by fieldbus technology suppliers (such as chip manufacturers) in the domestic market. Moreover, another point that cannot be overlooked is the degree of support for bus devices by the host computer software selected when constructing an automation management system, such as configuration software. Some monitoring and configuration software, such as Realinfo monitoring and configuration software or InTouch, provides good support for some mainstream bus devices such as Lonworks, PROFIBUS, and CAN, communicating and acquiring data through DDE, OPC, or direct connection methods. This facilitates user selection, whereas some configuration software supports fewer types, thereby reducing the range of choices available to users.

BRADY 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 many instruments supporting RS485. Instrument manufacturers have also turned to support RS485/MODBUS for the simple reason that RS485 conversion interfaces are not only cheap 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 top of a 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, some domestic companies have also engaged in this area, 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 utilized 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 difficulties in 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 LAN of 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 international development of 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 networked communication 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 having its own niche. When unification will occur remains uncertain. There are relatively few types of instruments supporting fieldbus, leaving little room for choice, with higher prices and smaller usage volumes.

BRADY 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 proceeds after confirmation from the slave module. Bus timing protocol: Timing protocols ensure synchronized operation 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 to control the operation process. The generation of all actions for each module occurs at the start of the clock cycle, with most actions 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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