ENK32 现场总线控制系统利用现场总线作为工业控制系统的骨干网络

描述

ENK32 现场总线控制系统利用现场总线作为工业控制系统的骨干网络

ENK32现场总线控制系统（Fieldbus Control System，FCS）是集散控制系统（Distributed Control System，DCS）的更新换代产品，并且已经成为工业生产过程自动化领域中一个新的热点。现场总线技术是20世纪90年代兴起的一种先进的工业控制技术，它将现今网络通信与管理的观念引入工业控制领域。从本质上说，它是一种数字通信协议，是连按智能现场设备和自动化系统的数字式、全分散、双向传输、多分支结构的通信网络。它是控制技术、仪表工业技术和计算机网络技术三者的结合，具有现场通信网络、现场设备互连、互操作性、分散的功能块、通信线供电和开放式互连网络等技术特点。这些特点不仅保证了它完全可以适应工业界对数字通信和自动控制的需求，而且使它与Internet 互连构成不同层次的复杂网络成为可能，代表了今后工业控制体系结构发展的一种方向。

现场总线控制系统利用现场总线作为工业控制系统的骨干网络，ENK32以满足工业现场中，控制系统、执行机构和测量设备之间能够实现多节点数字通信的需求，具有可拓展性强、组网灵活的特点。此外，该系统还具有分散性、开放性和低成本等优点。在分散性方面，控制功能分散到现场设备，使系统具有更高的灵活性和可靠性，分散的控制系统使根据控制需求的变化而重组和扩建原有的控制系统变得更加方便，对于系统的维护工作也更加容易。在开放性方面，通信网络采用公开化、标准化的解决方案，从而使用户在选择不同厂家的工控产品时更加灵活，组网更加方便。在低成本方面，分布式结构采用数字信号传输方式替代了集散控制系统中的模拟信号传输方式，省去了许多数/模、模/数转换装置；控制功能的分散下放，简化了系统结构、节约了硬件设备和连接电缆，缩短了开发周期，减少了维护费用。

集散控制系统（DCS）也称为分布式控制系统，它把控制技术、计算机技术、图像显示技术以及通信技术结合起来,实现对生产过程的监视、控制和管理。它既打破了常规控制仪表功能的局限,又较好的解决了早期计算机系统对于信息、管理和控制作用过于集中带来的危险性。它主要用于大规模的连续过程控制系统中, 如石化、电力等。

综上所述，ENK32现场总线控制系统是一种具有高度分散性、开放性和低成本的控制系统，它利用现场总线作为通信骨干网络，实现了控制系统、执行机构和测量设备之间的多节点数字通信。相比传统的集散控制系统，现场总线控制系统具有更高的灵活性和可靠性，并能降低整个工程生命周期的综合成本。

ENK32 现场总线控制系统利用现场总线作为工业控制系统的骨干网络

ENK32 Fieldbus Control System (FCS) is the replacement of Distributed Control System (DCS), and has become a new hot spot in the field of industrial process automation. Fieldbus technology is an advanced industrial control technology that arose in the 1990s. It introduces the concept of network communication and management into the field of industrial control. In essence, it is a digital communication protocol, is connected to intelligent field equipment and automation system of digital, fully decentralized, two-way transmission, multi-branch structure of the communication network. It is a combination of control technology, instrument industry technology and computer network technology. It has the technical characteristics of field communication network, field equipment interconnection, interoperability, decentralized functional blocks, communication line power supply and open interconnection network. These characteristics not only ensure that it can fully adapt to the needs of the industry for digital communication and automatic control, but also make it possible to interconnect with the Internet to form complex networks at different levels, representing a direction for the development of industrial control architecture in the future.

The fieldbus control system uses the fieldbus as the backbone network of the industrial control system, ENK32 to meet the needs of multi-node digital communication between the control system, the actuator and the measuring equipment in the industrial field, and has the characteristics of strong scalability and flexible networking. In addition, the system has the advantages of decentralization, openness and low cost. In terms of decentralization, the control function is dispersed to the field equipment, so that the system has higher flexibility and reliability, the decentralized control system makes it more convenient to reorganize and expand the original control system according to the change of control needs, and the maintenance of the system is also easier. In terms of openness, the communication network adopts open and standardized solutions, so that users are more flexible when choosing industrial control products from different manufacturers, and the networking is more convenient. In the aspect of low cost, the distributed structure adopts the digital signal transmission mode to replace the analog signal transmission mode in the distributed control system, and saves many digital/mode and analog/digital conversion devices. Decentralized control functions simplify the system structure, save hardware equipment and connecting cables, shorten the development cycle, and reduce maintenance costs.

Distributed control system (DCS) is also known as distributed control system, which combines control technology, computer technology, image display technology and communication technology to realize the monitoring, control and management of the production process. It not only breaks the limitation of the conventional control instrument function, but also better solves the danger brought by the early computer system for the information, management and control function too centralized. It is mainly used in large-scale continuous process control systems, such as petrochemical, electric power and so on.

In summary, the ENK32 fieldbus control system is a highly decentralized, open and low-cost control system, which uses the fieldbus as the communication backbone network to realize the multi-node digital communication between the control system, the actuator and the measuring equipment. Compared with the traditional distributed control system, the fieldbus control system has higher flexibility and reliability, and can reduce the comprehensive cost of the whole engineering life cycle.