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“易用于外，堅固于芯；速度無限，控制有方；數(shù)字互連，信息呈現(xiàn)”的品牌訴求集中體現(xiàn)了科遠(yuǎn)股份對于DCS產(chǎn)品本質(zhì)的認(rèn)識和不懈追求，更可靠，更易用，更先進(jìn)，嚴(yán)苛精進(jìn)的要求將成就志向高遠(yuǎn)的領(lǐng)先產(chǎn)品。
目前，該產(chǎn)品已取得“通用工業(yè)控制器”、“基于人工智能的火電廠自動控制系統(tǒng)”等多項專利成果。并通過中國電力聯(lián)合會組織專家評審，鑒定委員會一致認(rèn)為：NT6000分散控制系統(tǒng)的各項性能指標(biāo)，滿足大型火電機(jī)組控制的應(yīng)用要求，NT6000分散控制系統(tǒng)在可靠性和易用性方面達(dá)到國內(nèi)外先進(jìn)水平。
要知道產(chǎn)品是不斷發(fā)展的，不同的產(chǎn)品之間有競爭，就是要不斷的在發(fā)揮自己優(yōu)勢的同時學(xué)習(xí)別人的長處，這就是整合。
SCADA的重點(diǎn)是在監(jiān)視、控制，可以實現(xiàn)部分邏輯功能，基本用于上位； PLC單純的實現(xiàn)邏輯功能和控制，不提供人機(jī)界面，實現(xiàn)操作需借助與按鈕指示燈、HMI以及SCADA系統(tǒng)； DCS兼具二者功能，但是基本上用在比較大的系統(tǒng)中和一些控制要求高的系統(tǒng)中，價格上也要昂貴一些。
三者互相滲透，在一些生產(chǎn)企業(yè)會包含3種系統(tǒng)，SCADA作為生產(chǎn)管理級上位監(jiān)控，DCS實現(xiàn)復(fù)雜控制，而西門子PLC實現(xiàn)單機(jī)及簡單控制。但是隨著技術(shù)的發(fā)展，有一些廠家的PLC也可以實現(xiàn)很復(fù)雜精確的控制，漸漸占領(lǐng)了DCS的市場……
You should know that products are constantly evolving and there is competition between different products. It is important to constantly leverage one's own strengths while learning from others, which is called integration.
The focus of SCADA is on monitoring and control, which can achieve some logical functions and is basically used for upper level; PLC only implements logical functions and control, without providing a human-machine interface, and operation requires the use of button indicator lights, HMI, and SCADA system; DCS has both functions, but it is basically used in larger systems and some systems with high control requirements, and the price is also more expensive.
The three permeate each other, and in some production enterprises, there are three systems included. SCADA serves as the upper level monitoring of production management, DCS realizes complex control, and Siemens PLC realizes single machine and simple control. But with the development of technology, some manufacturers' PLCs can also achieve complex and precise control, gradually occupying the market of DCS
One thing to note: Siemens PLC is a type of controller;
DCS is a system architecture consisting of a controller, IO acquisition, network, software, etc;
SCADA system is another concept that presents a system with another application requirement. As the name suggests, it is a distributed data collection and monitoring system. Its origin and application are different from the first two. It is mainly used for data collection, such as power monitoring systems and oil pipeline monitoring systems. Its characteristic is that the control points are scattered, and a system may cover thousands of kilometers in an area [such as the oil and gas pipeline monitoring system in North America]; The communication structure is complex and cannot be compared to general control systems [from fiber optic to wireless and even satellite communication]. Its basic unit is the RTU.
Each product has its own usage scenarios and characteristics, and with the advancement of technology, mutual penetration of industries, and fierce competition. Both PLC and DCS products are developing their own advantages while penetrating into each other.
It should be noted that the logic control function of Siemens PLC is very powerful, while loop control is not worth mentioning. You can take a look at the slightly older model of PLC, while the DCS system is the opposite. This is due to the different internal processing mechanisms of the two systems.
What about now? Old PLC manufacturers are all involved in the field of DCS applications, such as Siemens, whose systems are just controllers with PLC, network, software, and enhanced capabilities. DCS manufacturers such as Honeywell have also integrated PLC into their systems to enhance their logic control functions.