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IC693BEM320

IC693BEM320

IC693BEM320

IC693BEM320

人們要求HMI軟件能做更多的事情，但關(guān)鍵在于它如何通過自動(dòng)功能以及為用戶提供增加特性來完成這些事情。National Instruments公司的LabVIEW平臺(tái)經(jīng)理Norma Dorst給出了這樣的評述：“靈活的軟件使系統(tǒng)集成盡可能容易進(jìn)行，它必須在最底層實(shí)現(xiàn)I/O集成，亦即從PLC及儀表到DAQ系統(tǒng)等，HMI都必須能與這一層進(jìn)行集成”。
HMI還必須能與通信及系統(tǒng)管理層進(jìn)行集成，她繼續(xù)說，像XML、.Net及ActiveX這樣的工具，都在這一層起作用，以幫助實(shí)現(xiàn)所有的集成及HMI中所需的集成。她指出，NI公司提供的LabVIEW，即可幫助實(shí)現(xiàn)HMI與XML電子表格的通話，并在互聯(lián)網(wǎng)上進(jìn)行通信?！叭绻悴恍枰@種經(jīng)過精心設(shè)計(jì)的通信，那么你不必為這些特性操心，但有些SCADA系統(tǒng)卻需要有這樣的特性。大多數(shù)HMI供應(yīng)商都在擔(dān)心管理層，但嵌入層也一樣重要”。
  除創(chuàng)建應(yīng)用外，HMI系統(tǒng)還必須能公開地與各種元素進(jìn)行通信。這種供應(yīng)商多樣性及設(shè)備差異性，使得用戶今天必須強(qiáng)制使用其他軟件工具（如由OPC基金提供的軟件工具等）。以客戶機(jī)及服務(wù)器能力，OPC規(guī)范可將對象與設(shè)備相連，并充當(dāng)各系統(tǒng)間的仲裁及橋梁。OPC服務(wù)器通過從客戶機(jī)（或程序）上獲取信息并將其轉(zhuǎn)化成可理解的格式，實(shí)現(xiàn)了第三方軟件與完全不同硬件之間的通信。 
  Rockwell公司的Pradeep David評述說：“所有HMI軟件都需要成為OPC服務(wù)器及客戶程序，因?yàn)楹苌儆杏脩裟艽_切知道他的系統(tǒng)需要與哪家或多少供應(yīng)商提供的硬件進(jìn)行通信。很多HMI都需要進(jìn)行上至MES層、下至設(shè)備或部件層的通信，OPC即是一個(gè)可完成這種任務(wù)的機(jī)制”。

  擴(kuò)展應(yīng)用 
  GE Fanuc公司Inblution產(chǎn)品部HMI/SCADA產(chǎn)品市場總監(jiān)Roy Kok建議在HMI軟件中尋求靈活性，但重要的是要能集成盡可能多的功能。用戶希望能將我們的標(biāo)準(zhǔn)軟件完全轉(zhuǎn)換成他們唯一擁有的程序。GE Fanuc Automation提供兩種HMI軟件套裝：面向離散的Complicity HMI--一種由事件驅(qū)動(dòng)且更適合于汽車及機(jī)器控制應(yīng)用的軟件，以及面向過程的iFix--一種由時(shí)間驅(qū)動(dòng)且針對過程應(yīng)用中常見的分析及連續(xù)控制應(yīng)用（如石油天然氣、供水及廢水處理行業(yè)中的控制應(yīng)用等）的軟件。這兩種產(chǎn)品都支持像食品飲料、建筑物管理及電力供應(yīng)這樣的混合市場。

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