【正文】 development plex application engineer on develops the new product with the control merchant close cooperation. They need the new product to be able to unify PC the senior software function and the PLC reliability. These important users were PLC and have provided the product development instruction based on the PC control pany. Realizes the software function not only to need to have the senior the software, moreover the controller hardware function also needs to have the enhancement. Because in the world scope is dropping to the PC part demand, therefore many semiconductors merchants start for the industrial application redesign their product. At present controls the domain the merchant to start in the industry control product to use the industrialization floating point processor, DRAM, solid state memory like Compact Flash as well as the fast Ether chip. This enables the merchant to use based on the PC control system flexibility and the usability develops a more formidable software, moreover this PC control system also may move the realtime operating system by to guarantee the reliability. This kind of new controller is the solution 20% the application question but designs, it unified PLC and the PC two merits. The ARC industry analyst is called this kind of equipment the programmable automated controller, namely PAC. The programmable logical controller world looks at in generally the research in ARC, they have produced the PAC five principal characteristics. These controller characteristics are through define the software the ability to realize its function. Multipurpose, has in the logic, the movement, the PID control, the actuation and processing in a platform at least two kind of above functions. Except that in order to realize special agreement like SERCOS to have to I/O makes some improvements。s connecting can pass an ether work transmission data can also read and write the I/O out of a few mileses which delivers through the work by reading and write native I/ the software connects very and in brief, you can build up and write the application procedure of the Compact FieldPoint quickly, but again don39。 High speed I/O main line, like PCI and ether。CompactRIO 平臺非常適合如機器控制這樣的復(fù)雜和高速應(yīng) 用，并且，對于那些通常需要開發(fā)專門的硬件的應(yīng)用，結(jié)合了 FPGA的這種系統(tǒng)也是非常好的選擇。 Compact Vision System整合了高性能 Intel 處理器、 FPGA，數(shù)字 I/O和三個1394端口。 PXI能提供最為廣泛的 I/O，包括有 1000 V的隔離式模擬輸入，高容量數(shù)字 I/O，用于機器視覺的模擬 /數(shù)字幀抓取器，聯(lián)合多軸運動模塊。 ? 處理能力： 在某些應(yīng)用中，您需要有專門的控制算法、高級的信號處理或數(shù)據(jù)記錄。 FPGA 如同有一個計算機，其內(nèi)部電路能被重新連接來運行特定的應(yīng)用程序。常見的應(yīng)用包括用于生產(chǎn)或裝配檢驗的零件檢測，如檢查電路板上器件的位置是否正確，識別光學(xué)字符（ OCR）來檢查日期條碼或?qū)Ξa(chǎn)品進行分類，以及進行光學(xué)測量來找出產(chǎn)品的瑕疵或?qū)Ξa(chǎn)品按質(zhì)量等級進行分類。 基于 PAC的視覺和測量應(yīng)用 NI具有測量的行業(yè)背景，它通過引入高速測量和機器視覺使 PAC超越了簡單的 I/O。它們可以通過采用實時操作系統(tǒng)（ RTOS）如來自 Ardence 的 Phar Lap 或Wind River 的 VxWorks 來實現(xiàn)。 絕大多數(shù) PLC 廠商通過在已有的掃描式架構(gòu)中增加新的功能來建立 PAC軟件，這些新功能包括以太網(wǎng)通信，運動控制和高級算法。 6. 兩種不同的軟件解決方案 一方面軟件是 PAC和 PLC主要的區(qū)別，而另一方面廠商在提供高級軟件的方式上也有所不同。 ” 簡化系統(tǒng)設(shè)計的另一方面是具有高級的圖形化開發(fā)工具，利用該工具可以使工程師很輕松地把處理的概念轉(zhuǎn)變?yōu)槟軐嶋H控制機器的代碼。這些控制器特性是通過定義軟件的能力來實現(xiàn)其 功能的。這些重要用戶為 PLC 和基于 PC 控制的公司提供了產(chǎn)品開發(fā)指導(dǎo)。 盡管某些工程師采用具有堅固硬件和專門操作系統(tǒng)的專用工業(yè)計算機，但是由于 PC 可靠性方面的問題絕大多數(shù)工程師 還是避免在控制中使用 PC。盡管許多工程師在集成高級功能時使用 PC，這些功能包括模擬控制和仿真、連接數(shù)據(jù)庫、網(wǎng)絡(luò)功能以及和第三方設(shè)備通信，但是 PLC仍然在控制領(lǐng)域中處于統(tǒng)治地位。來自ARC、聯(lián)合開發(fā)公司（ VDC）以及網(wǎng)上 PLC培訓(xùn)資源 ： ? 77%的 PLC被用于小型應(yīng)用（低于 128 I/O） ? 72%的 PLC I/O是數(shù)字的 ? 80%的 PLC應(yīng)用可利用 20條的梯形邏輯指令集來解決 由于采用傳統(tǒng)的工具可以解決 80%的工業(yè)應(yīng)用，這樣就 強烈地需要有低成本簡單的 PLC；從而促進了低成本微型 PLC 的增長，它帶有用梯形邏輯編程的數(shù)字 I/O。中文 5720字 PAC—— 新一代工業(yè)控制系統(tǒng) , 可編程自動化控制發(fā)展的未來 隨著許多廠商已生產(chǎn)出能結(jié)合 PC功能和 PLC可靠性的可編程自動化控制器（ PAC），目前控制系統(tǒng)已逐漸開始采用 PAC。然而，工程師們只需利用數(shù)字I/O和少量的模擬 I/O數(shù)以及簡單的編程技巧就可開發(fā)出 80%的工業(yè)應(yīng)用 。 然而， PC 還不是非常適合用于控制應(yīng)用。然而， PC 系統(tǒng)需要操作人員學(xué)習(xí)新的更高級的工具。他們需要新產(chǎn)品能結(jié)合 PC的高級軟件功能和PLC 的可靠性。在 ARC的 “ 可編程邏輯控制器世界概覽 ” 研究中，他們給出了 PAC的五個主要特性。 3. “ 通過結(jié)合 IEC611313，用戶向?qū)Ш蛿?shù)據(jù)管理，軟件工具能設(shè)計出在跨越多個機器和處理單元的處理流程。盡管 PAC 包含有以太網(wǎng)接口，但是為了要把設(shè)備和工廠其它系統(tǒng)無問題地集成在一起，通信軟件是至關(guān)重要的。然而，作為 PLC主要優(yōu)勢的這種嚴(yán)格的掃描式構(gòu)架也導(dǎo)致其靈活性的欠缺。 這些廠商首先要能提供通用操作系統(tǒng)如 Windows 所不具備的可靠性和確定性。利用 LabVIEW RT和 LabVIEW FPGA，我們能結(jié)合 LabVIEW和實時操作系統(tǒng)并直接下載到 FPGA（現(xiàn)場可編程門陣列）平臺來提供可靠性和確定性。在生產(chǎn)環(huán)境中，有許多產(chǎn)品缺陷或錯誤使用傳統(tǒng)的測量方法是很難識別出來的，而通過視覺方式則能檢測。通過定義這些可配置邏輯塊的功能，其彼此連接以及相應(yīng)的 I/O，電子設(shè)計人員即可以開發(fā)出定制的芯片，而不需要花錢來生產(chǎn)專門的 ASIC。 NI 在包括視覺采集的高速 I/O方面有著長期經(jīng)驗，因此您可以在您的標(biāo)準(zhǔn)控制系統(tǒng)中使用振動或機器視覺等功能。您可以選用來自 NI或第三方廠商的 PXI和 CompactPCI模塊。由于軟件的接口非常簡單，您可以快速地建立和編寫 Compact FieldPoint應(yīng)用程序，但又不失復(fù)雜控制，數(shù)據(jù)記錄和通信的強大功能。這些模塊可由 NI 或其它廠商提供。s, these must develop 20% application engineers had considered uses PC in the industry control. PC provides the software function may carry out the senior task, provides the rich programming and the user environment, and the PC COTS part enables control engineer the technology which develops unceasingly to use in other applications. These technologies including floating point processor。s include is hot to replace of emulation and numerical I/O mold piece and controller, and take ether and string to go total line to them, the I/O mold piece can link thermocouple, RTD directly, account in response to the dint, the 420 mAs spread the direct current signal of the feeling machine, 530 Vs and the exchanges signal of the 0250 work correspondence of the Compact FieldPoint39。 Moreover the software also can provide logical, the movement, processing and the PID function. For example, the movement control took the software control circulation, it can reading the digital input from the orthogonal encoder, the execution simulation control circulates and outputs the control device the simulated signal. The sole multi regulations develop the platform use general label and the sole database visit all parameters and the function. Because PAC is like multipurpose but designs for more the senior application, they need the senior software. In order to can highly effective design the system, the software must be the sole integrated software package, but is not the many kinds of separations software tool, these software tools in the project cannot the seamless joint operation. Through unifies IEC611313, th