光伏應(yīng)急照明

1、The status and development trend of ProgrammableLogic Controller(PLC)Rockwell Automati on Con trol Logic Product Man ager, Chi na Regi onPLC is to improve the productivity of the developme nt of the requireme nts-drive n. Upgrad ing difficult to mai ntain the inconvenien ce. With the developme nt of

2、 electro nic comp onen ts, Before and after the 1969 inven ti on of the PLC (Programmable Logic Con troller). AB (Alle n I. Bradley) is the inven tor of the PLC And PLC, one of the family as the use of registered trademarks. AB (Rockwell) since Action of the acquisition). The first is to replace a m

3、ajor role in PLC Relay. Exclusively for the logic of (order) to con trol fun cti ons of a si ngle small memory . However. i n-the-loop regulati on. Still n eed to loop a sin gle in strume nt or DCS. With electro nic tech no logy, con trol tech no logy, PLC from the simple The developme nt of the dig

4、ital volume con trol to a simple an alog con trol and digital volume con trol with The comb in ati on of a partial substitute for the fun ctio n of sin gle-loop in strume ntati on.PLC's first major applicati on in the automotive product ion line. With the application of Continuously expand the a

5、rea of a variety of households in PLC. In order to meet the n eeds of differe nt Applicati on of the requireme nts of the n eeds of families with a strong PLC itself flexibility. Households PLC Factory solution is sta ndardized, modular and n etwork. In put, output sig nal into 20mA and so on, each

6、sig nal using. A types of process ing modules, each module there are multiple cha nn els, so that the compositi on can n ot With the size of the system. At the same time, also can reduce the R & D and product ion costs. Stan dard Results of a sta ndardized programming Ianguages. IEC61131-3 In th

7、e data structure, program structure, program ming Ian guage and data excha nge, etc. Established intern ati onal sta ndards, a new type of PLC, i ncludi ng refere nee to the DCS are marked Developme nt pote ntial.PLC family of n etwork capacity from scratch. Today has bee n very Powerful. Through th

8、e n etwork. Dece ntralized con trol can be achieved, reduci ng in stallati on costs. To improve in tegrati on .It is precisely because this flexibility. Users can easily Build their own automated con trol system. Households PLC is desig ned for In dustrial environment, therefore, reliability and str

9、ong anti-interferenee ability. Households P LC In the Ion g-term applicati ons, challe nges. Almost become a high reliability of the generation of Word. Almost all large-scale sequencecontrol, it is important to the applicati on of PLC-body Achievable. It can be said. No household there is no moder

10、n manu facturi ng PLC.DCS further in tegrati on of PLC tech no logy, the developme nt of AC-mortem (Programmable Automation Controller). PAC in the current Domestic and foreign have different definitions. PAC mentioned here is not a PC - The realization of automatic control. It is not only the order

11、 of control functions can be achieved, but also The realizati on of process con trol, moti on con trol, drive con trol, safety con trol and approved Departme nt The rati on ale for such. PAC has a stro ng ability to connect to the network a variety of standard Prospective on-site bus. Connected to t

12、he standards,including FF and PA networks, the Types of device-level networks; can connect field bus standard frequency Browser, MCC (Motor Control Center). The expansion of I/O also can be connected not with the controller. AC households can Convenient and en terprise n etwork in tegrati on, the re

13、alizati on of chemical in formatio n. Ether net has become Layer sta ndard for n etwork mon itori ng. PAC full-featured short, in the factory since -Acti on, on ly the user AC mi ning can be achieved so the con trol functions. Not the n eed for other con trol systems.Rockwell Automation in the netwo

14、rk using Ethernet / IP, Device Net three n etwork tech no logy. And the realizatio n of the three n etwork Seamless n etwork conn ectivity is a model of n etwork architecture in dustries. The tech no logy of nu clear word文檔可自由復(fù)制編輯Heart is the CIP (common in dustrial protocol) protocol. PLC n etworks

15、 Mod bus applicati on is also very exte nsive. Aspects of the curre nt Roma nian In dustrial Ether net Rockwell Automati on, Schn eider pushed the mai n CIP Ethernet, Sieme ns and so the main push Ether Net / IP standard network protocol and network-based Prepared. special hardware tech no logy. We

16、all agree that in dustrial Ether net Network will receive a wide range of applicati ons. Ether net can domin ate the world but also n ecessary. On the one hand to verify in ter-are still some tech ni cal problems yet to be soluti on Decisi on. On the other hand, the in stallati on of the existi ng m

17、ature owned bus is very great. Extremely costly full replaceme nt.With the developme nt of electro nic tech no logy. PLC size is gett ing smaller and smaller. Small Is limited. Not better. RC components such as body Plot and an ti-jam ming measures it is difficult to reduce the n eed for these discr

18、ete comp onen ts. At the same time. In order to use more convenient, more powerful, constantly expa nding the memory con troller Large capacity con ti nued to in crease. PLC has also absorbed the results of IT in the bottom of the greater use of XML tech no logy .In the n etwork to actively promote

19、the Ethernet Net applicati ons, the Ether net layer of the n etwork from the in formatio n in to real-time con trol n etwork is the head The direct ion of the previous efforts. In fact, Rockwell Automati on can be used Ether net con trol. GE in the new system to con trol the use of Ethernet I/O 100n

20、s to complete Ether Net/IP the clock synchroni zati on. Can be used SOE records, in clud ing applicati ons, in clud ing high-precisi on. IP has bee n A wireless n etwork adapter can be distributed through the wireless Ethernet con trol System which is difficult to in stall wiring en vir onment very

21、attractive. Currently on the market Also did not release the servo control Ethernet products but many manu facturers are develop ing. Some manu facturers have prototype. PLC manufacturers actively control the process The field of system development. Rockwell Automati on to acquire ICS (in Adva need

22、process con trol algorithm leads!.Ano ther major trend is that the whole Factory un ified soluti ons such as Rockwell Automatio n's In tegrated Architecture West.At prese nt, such as the existe nee of a wide range of in dustrial computer con trol system, PLC and DCS And so on. IPC is in the labo

23、ratory and in more con trol of small-scale projects. In the Public The field of in dustry con trol has not bee n widely recog ni zed. Mutual PLC and DCS In filtrati on .are aimed at each other's markets, IPC developme nt in the slit. PLC More and more likes DCS. In dustrial Mach ine and in dustr

24、ial machi ne with the con trol The popularity of the PC machi ne, has developed rapidly. But they exist in vary ing degrees to in stall Way. At the same time, aspects of sta ndardizatio n and ope nn esshas made substa ntial progress Loved by many users. Only certa in areasi n the functional base in

25、the PLC Developed on the basis of the PAC system can meet the con trol of the whole pla nt to Seek ing. Thus PLC is still a solid foun dati on.At prese nt, automati on is the main direct ion of developme nt of en terprise and shop floor level Integration. Enhancement of productivity, globalization,

26、innovation and susta in able developme nt Requireme nts, drive n by in formati on, com muni cati on, con trol and automati on of dyn amic in tegrati on The only way for developme nt. China also has the funds to support en terprise in tegrati on Research topics, many in dustries have begun to explore

27、 the road of integration. Cisco and the Law Rockwell automati on of joint product ion of in dustrial Ether net switch is con siste nt with the product of the trend. Rockwell Automatio n's In tegrated Architecture using a con trol Engine to achieve the order of con trol, process con trol, drive c

28、on trol, moti on con trol, A wide range of security control and batch control is to provide a development platform Field level man-mach ine in terface and mon itori ng the developme nt of a network protocol information Layer, control layer and device layer of the seamless in tegrati on of a framewor

29、k for the realizati on of SOA Modular product ion word文檔可自由復(fù)制編輯management, performanee management and integration, the realization of the mon itori ng in formati on And man ageme nt of in formati on in tegrati on and tran spare ncy in here nt in the tran smissi on. Many factories have not With the m

30、anu facturers of eontrol systems, Rockwell Automation's Integrated Architecture can All of these control systems integration, and completion of real-time data collected at the scene And real-time con trol. Users in an ope n en vir onmen t, it is more convenien tly Is the con trol of the whole pl

31、a nt, product ion and performa nee man ageme nt.At the same time, because the buildi ng blocks of Structure. In short PLC resp onse to the n eeds of en terprise in tegrati on, to the sta ndardizati on, multi-fu nction To the directi on of the continuous development of applications continuing to expa

32、nd functions are being con sta ntly stre ngthe ned, Very optimistic about the prospects for developme nt.中文翻譯可編程邏輯控制器（PLC）的現(xiàn)況和發(fā)展趨勢(shì)羅克韋爾自動(dòng)化PLC的發(fā)展是提高生產(chǎn)力的要求推動(dòng)的。最早的自動(dòng)控制采用繼電器板進(jìn)行 的，控制邏輯簡(jiǎn)單.體積大.維護(hù)不便升級(jí)換代困難。隨著電子元器件的發(fā)展，1969 年前后發(fā)明了 PLC（Programmable Logic Controller）。AB（Allen Bradley）是 PLC 的發(fā)明者之一并把PLC作為注冊(cè)商標(biāo)使用。AB（

33、羅克韋爾自動(dòng)化收購(gòu) ）、Modicon（PLC發(fā)明者之一，施耐德收購(gòu)是早期著名的 PLC廠家。最早的PLC主 要作用是替代繼電器。完全用于邏輯（順序）控制內(nèi)存小功能單一。但是，在回路 調(diào)節(jié)時(shí)，仍然需要單回路儀表或者 DCS。隨著電子技術(shù)、控制技術(shù)的發(fā)展，PLC 從單純的數(shù)字量控制發(fā)展到簡(jiǎn)單的模擬量控制和數(shù)字量控制相結(jié)合，部分替代了單回路儀表的功能。最早的PLC主要應(yīng)用在汽車生產(chǎn)線上。隨著應(yīng)用領(lǐng)域不斷拓展出現(xiàn)了各種不 同的PLC。為了滿足不同應(yīng)用的要求需要 PLC本身具有很強(qiáng)的靈活性。PLC廠 家的解決方案是標(biāo)準(zhǔn)化、模塊化和網(wǎng)絡(luò)化。將輸入、輸出信號(hào)分成24V- 20mA等， 每種信號(hào)采用一種模塊

34、處理，每種模塊有多個(gè)通道，這樣就可以組成不同規(guī)模的 系統(tǒng)。同時(shí)也可以降低研發(fā)和生產(chǎn)成本。 標(biāo)準(zhǔn)化另外一個(gè)成果是編程語(yǔ)言的標(biāo)準(zhǔn) 化。IEC61131-3在數(shù)據(jù)結(jié)構(gòu)、程序結(jié)構(gòu)、編程語(yǔ)言和數(shù)據(jù)交換等方面制定了國(guó)際 標(biāo)準(zhǔn)，新型的PLC包括DCS都參考這個(gè)標(biāo)準(zhǔn)進(jìn)行開(kāi)發(fā)。PLC的網(wǎng)絡(luò)能力從無(wú)到 有今天已經(jīng)非常強(qiáng)大。通過(guò)網(wǎng)絡(luò)可以實(shí)現(xiàn)分散控制，降低安裝成本，提高集成度。 正是因?yàn)檫@種靈活性，用戶可以很方便地建立自己的自動(dòng)化控制系統(tǒng)。PLC在設(shè)計(jì)時(shí)就是面向工業(yè)環(huán)境的因此，可靠性和抗干擾能力都很強(qiáng)。PLC在長(zhǎng)期應(yīng)用中 經(jīng)受了考驗(yàn)。幾乎成為高可靠性的代名詞。幾乎所有大型的順序控制、重要的應(yīng) 用，都是PLC實(shí)現(xiàn)的?？?/p>

35、以說(shuō)沒(méi)有 PLC就沒(méi)有現(xiàn)代制造業(yè)。（ProgrammableAutomation Controller）。目前PAC在國(guó)內(nèi)和國(guó)外有不同的定義。 這里講的PAC不 是用PC機(jī)實(shí)現(xiàn)自動(dòng)控制。它不僅可以實(shí)現(xiàn)順序控制功能，還可以實(shí)現(xiàn)過(guò)程控制、 運(yùn)動(dòng)控制、傳動(dòng)控制、安全控制和批處理等。PAC具有很強(qiáng)的網(wǎng)絡(luò)能力可以連接 到各種標(biāo)準(zhǔn)的現(xiàn)場(chǎng)總線上。包括連接到標(biāo)準(zhǔn)的FF和PA網(wǎng)、各種設(shè)備級(jí)的網(wǎng)絡(luò)；可以通過(guò)標(biāo)準(zhǔn)的現(xiàn)場(chǎng)總線連接變頻器，MCC（馬達(dá)控制中心），擴(kuò)展I/O也可以連接不同的控制器。PAC提供第三方設(shè)備的集成。PAC可以方便的和企業(yè)網(wǎng)集成， 實(shí)現(xiàn)信息化工廠。以太網(wǎng)已經(jīng)成為監(jiān)控層的標(biāo)準(zhǔn)網(wǎng)絡(luò)?？傊甈AC功能全面

36、，在工廠自動(dòng)化中，僅采用戶AC就可以實(shí)現(xiàn)所以的控制功能不需要其他的控制系統(tǒng)。在網(wǎng)絡(luò)方面羅克韋爾自動(dòng)化采用 Ethernet/IP、ControlNet和DeviceNet三層網(wǎng) 絡(luò)技術(shù)。并實(shí)現(xiàn)三種網(wǎng)絡(luò)的無(wú)縫連接是目前工業(yè)網(wǎng)絡(luò)架構(gòu)的典范。其技術(shù)核心是CIP（公用工業(yè)協(xié)議）協(xié)議。PLC網(wǎng)絡(luò)中Profibus、Modbus應(yīng)用也非常廣 泛。目前工業(yè)以太網(wǎng)方面羅克韋爾自動(dòng)化、施耐德主推 CIP以太網(wǎng)，西門(mén)子等主 推Profinet。EtherNet/IP采用標(biāo)準(zhǔn)的網(wǎng)絡(luò)協(xié)議和網(wǎng)絡(luò)設(shè)備。 Profinet采用特殊硬件 技術(shù)。大家都認(rèn)為工業(yè)以太網(wǎng)將獲得廣泛的應(yīng)用。但以太網(wǎng)能否一統(tǒng)天下還需要 時(shí)間來(lái)驗(yàn)證因?yàn)橐环矫婺壳叭匀挥行┘夹g(shù)難題尚待解決。 另一方面現(xiàn)有成熟的總 線安裝保有量是非常大的，完全替換代價(jià)極大。隨著電子技術(shù)的發(fā)展。PLC體積越來(lái)越小。但小型化是有限度的，并不是越 少越好。