RELANCE 0-57405-C 驅(qū)動板
0-57405-C也有一些特殊要求，如振動監(jiān)測、流量計算、調(diào)峰調(diào)谷等，SCADA是調(diào)度管理層，DCS是廠站管理層，PLC是現(xiàn)場設(shè)備層。
西門子PLC，即可編程控制器，適用于工業(yè)現(xiàn)場的測量控制，現(xiàn)場測控功能強，性能穩(wěn)定，可靠性高，技術(shù)成熟，使用廣泛，價格合理。
DCS系統(tǒng)，即集散控制系統(tǒng)，屬90年代國際先進水平大規(guī)?？刂葡到y(tǒng)。它適用于測控點數(shù)多、測控精度高、測控速度快的工業(yè)現(xiàn)場，其特點是分散控制和集中監(jiān)視，具有組網(wǎng)通訊能力、測控功能強、運行可靠、易于擴展、組態(tài)方便、操作維護簡便，但系統(tǒng)的價格昂貴。
SCADA系統(tǒng)，即分布式數(shù)據(jù)采集和監(jiān)控系統(tǒng)，屬中小規(guī)模的測控系統(tǒng)。它集中了PLC系統(tǒng)的現(xiàn)場測控功能強和DCS系統(tǒng)的組網(wǎng)通訊能力的兩大優(yōu)點，性價比高。
0-57405-C、DCS是一種概念，PLC是一種產(chǎn)品，三者不具可比性。
隨著工業(yè)互聯(lián)網(wǎng)的飛速發(fā)展，PLC/DCS/SCADA三款控制產(chǎn)品被各大企業(yè)所應(yīng)用，如何選擇PLC/DCS/SCADA控制系統(tǒng)，成為企業(yè)的關(guān)鍵性問題。天拓四方經(jīng)過十幾年的經(jīng)驗累積，幫助企業(yè)實現(xiàn)完美的控制系統(tǒng)搭配。下面，天拓就以前得經(jīng)驗跟大家一起分享一下西門子PLC,DCS,SCADA三者的區(qū)別與聯(lián)系。
狹義的說，DCS主要用于過程自動化，PLC主要用于工廠自動化(生產(chǎn)線)，SCADA主要針對廣域的需求，如油田，綿延千里的管線。如果從計算機和網(wǎng)絡(luò)的角度來說，它們是統(tǒng)一的，之所以有區(qū)別，主要在應(yīng)用的需求，DCS常常要求高級的控制算法，如在煉油行業(yè)，PLC對處理速度要求高，因為經(jīng)常用在聯(lián)鎖上，甚至是故障安全系統(tǒng)；
With the rapid development of industrial internet, PLC/DCS/SCADA control products have been applied by major enterprises. How to choose PLC/DCS/SCADA control system has become a key issue for enterprises. After more than a decade of experience accumulation, Tiantuo Sifang has helped enterprises achieve perfect control system matching. Below, Tiantuo will share with you the differences and connections between Siemens PLC, DCS, and SCADA based on their previous experience.
Narrowly speaking, DCS is mainly used for process automation, PLC is mainly used for factory automation (production lines), and SCADA is mainly aimed at wide-ranging needs, such as oil fields and thousands of miles of pipelines.
Check if the positive and negative signals are reversed, if the jumper settings for the card are correct (especially for newly added points), and if there are any errors in the configuration model, range, compensation, and other parameter settings. 3. Check if other measuring points of the card to which the signal belongs are operating normally, and determine whether it is possible to use the method of replacing the spare parts of the card to detect whether it is a card fault based on the actual situation on site. When replacing, pay attention to the jumper settings
Server upgrade: For early plantscape/pks systems, the DCS communication architecture adopts server and client architectures, and the system monitoring operation station uses ordinary PC workstations. The servers usually use DELL Edge series. As the system service life increases, ordinary commercial PC hardware is facing updates. Haitian Weiye Automation Company is targeting Windows NT operating system limitations, PCI slot limitations ISA slot restrictions and other issues can provide a series of solutions to help users solve system server upgrade problems at the lowest cost.