The configuration software is professional. A configuration software can only be adapted to a certain field of application. The concept of configuration first appeared in industrial computer control. Such as DCS (Distributed Control System) configuration, PLC (Programmable Controller) ladder configuration. The man-machine interface generation software is called the industrial control configuration software. In fact, there are configuration concepts in other industries, people just don't call it. For example, AutoCAD, PhotoShop, and Office Software (PowerPoint) have similar operations, that is, using software-provided tools to form their own work, and save the work as a data file instead of executing the program. The data formed by the configuration can only be identified by its manufacturing tools or other special tools. But the difference is that the configuration results formed in industrial control are used for real-time monitoring. The interpretation engine of the configuration tool is run in real time based on these configuration results. On the surface, the configuration tool runs the program to perform its own specific tasks.
Although configuration is the need to write a program to complete a specific application. But in order to provide some flexibility, the configuration software also provides programming means, generally built-in compiler system, providing BASIC-like language, and some even support VB.
DCS is the English abbreviation of Distributed Control System (Distributed Control System), which is also called the distributed control system in the domestic self-control industry. The so-called distributed control system, or distributed system in some materials, is a new type of computer control system compared to centralized control systems. It is developed and evolved on the basis of centralized control systems. Come. In terms of system functions, DCS and centralized control systems have little difference, but the implementation of system functions is completely different.
First, the backbone of DCS—the system network, which is the foundation and core of DCS. Since the network plays a decisive role in the real-time, reliability and scalability of the entire DCS system, all manufacturers have carefully designed this aspect. For a system network of DCS, it must meet the requirements of real-time performance, that is, complete the transmission of information within a certain time limit. The time limit of "determination" mentioned here means that in any case, information transmission can be completed within this time limit, and this time limit is determined according to the real-time requirements of the controlled process. Therefore, the measure of system network performance is not the rate of the network, which is commonly referred to as the number of bits per second (bps), but the real-time nature of the system network, that is, how long the required information can be transmitted. . The system network must also be very reliable, and network communication can't be interrupted under any circumstances. Therefore, DCS of most manufacturers adopts a dual bus, ring or double star network topology. In order to meet the requirements of system scalability, the maximum number of nodes that can be accessed on the system network should be several times larger than the number of nodes actually used. In this way, on the one hand, new nodes can be added at any time, and on the other hand, the system network can be operated in a light communication load state to ensure real-time and reliability of the system. During the actual operation of the system, the Internet access and the offline network of each node may occur at any time, especially the operator station. In this way, network reconfiguration will be performed frequently, and such operation must not affect the normal operation of the system. Therefore, the system The network should have strong online network reconfiguration capabilities. Second, it is a network node that is fully capable of handling field I/O and implementing Direct Digital Control (DOS). In general, a set of DCS should set up an on-site I/O control station to share the I/O and control functions of the entire system. In this way, the failure of the entire system due to failure of one site can be avoided, the reliability of the system can be improved, and the data collection and control functions can be shared by each site, which is beneficial to improving the performance of the entire system. The DCS operator station is a network node that handles all HMI-Human Machine Interface or operator interface functions associated with operational operations. The system network is the engineering station of DCS. It is the network node for offline configuration, configuration work and online system supervision, control and maintenance of DCS. Its main function is to provide tool software for configuring and configuring DCS. That is, the configuration software), and monitor the operation status of each node on the DCS network in real time when the DCS is running online, so that the system engineer can adjust the system configuration and some system parameter settings in time through the engineering station, so that the DCS is always at the best. Under the working condition. Unlike centralized control systems, all DCS require a system configuration function. It can be said that a system without a system configuration function cannot be called a DCS. Since its inception in 1975, DCS has experienced more than 20 years of development. In the past two decades, DCS has not undergone major changes in the system architecture, but its functions and performance have been greatly improved through continuous development and improvement. In general, DCS is moving toward a more open, more standardized, and more product-oriented direction.
As a computer control system in the field of production process automation, the traditional DCS is only a narrow concept. If you think that DCS is just an automated system of the production process, it will lead to erroneous conclusions, because the meaning of the current computer control system has been greatly expanded, it not only includes the various content contained in the past DCS, but also goes down to the Every measuring equipment and executing agency on the site has been developed to the production management and all aspects of business management. The traditional DCS now only refers to the automation of the part of the production process control, and the concept of the industrial automation system should be positioned to the enterprise comprehensive solution, that is, the level of total soluTIon. Only by asking questions and solving problems from this point of view can computer automation really play its due role.
After entering the 1990s, computer technology has advanced by leaps and bounds, and more new technologies have been applied to DCS. PLC is an electronic device developed for sequential logic control. It is mainly used to replace the inflexible and cumbersome relay logic. Fieldbus technology has developed so rapidly since the mid-1990s that some people have made predictions: based on
Fieldbus FCS will replace DCS as the protagonist of the control system.
DCS is short for Data CommunicaTIon Subsystem.
Taking the rail transit industry as an example, DCS is a purely transparent non-secure system. It is the carrier for sending messages between the control center and the train.
configurationIn the use of industrial control software, we often refer to the word configuration, the configuration of English is "ConfiguraTIon", what is the meaning? Simply put, configuration is the process of completing a specific task in a project by using the tools and methods provided in the application software. In contrast to hardware production, configuration and assembly are similar. If you want to assemble a computer, you can provide various types of motherboards, chassis, power supply, CPU, monitor, hard disk, optical drive, etc. in advance. Our job is to use these components to make up the computer you need. Of course, the configuration in the software has more room to play than the hardware assembly, because it is generally more "components" than the hardware, and each "part" is flexible, because the soft components have internal properties. You can change its specifications (such as size, traits, colors, etc.) by changing the properties. Before the configuration concept emerges, a certain task is implemented by writing programs (such as using BASIC, C, FORTRAN, etc.). Writing a program is not only a heavy workload, a long cycle, but also easy to make mistakes, can not guarantee the duration. The emergence of configuration software solved this problem. For a few months of work in the past, it can be done by configuring it for a few days.
The configuration software is professional. A configuration software can only be adapted to a certain field of application. The concept of configuration first appeared in industrial computer control. Such as DCS (Distributed Control System) configuration, PLC (Programmable Controller) ladder configuration. The man-machine interface generation software is called the industrial control configuration software. In fact, there are configuration concepts in other industries, people just don't call it. For example, AutoCAD, PhotoShop, and Office Software (PowerPoint) have similar operations, that is, using software-provided tools to form their own work, and save the work as a data file instead of executing the program. The data formed by the configuration can only be identified by its manufacturing tools or other special tools. But the difference is that the configuration results formed in industrial control are used for real-time monitoring. The interpretation engine of the configuration tool is run in real time based on these configuration results. On the surface, the configuration tool runs the program to perform its own specific tasks.
Although configuration is the need to write a program to complete a specific application. But in order to provide some flexibility, the configuration software also provides programming means, generally built-in compiler system, providing BASIC-like language, and some even support VB.
In today's industrial control field, some commonly used large configuration software mainly include: WinCC, iFix, Intouch, Kingview, Force Control, etc.
DCS and configuration software is not a concept at all, distributed control system, it is a centralized and decentralized control system, it is a control concept, and the configuration software is only a human-machine interface application in the control system, DCS You can also use the configuration software, for example, you can use VB's own host computer communication control, DCS includes the hardware components.
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