22A-A4P5F104

通常從項(xiàng)目定義階段開始，同時(shí)生成設(shè)計(jì)文檔。在項(xiàng)目執(zhí)行過程中，如果控制系統(tǒng)的定義和文檔的編制都遵循項(xiàng)目程序，那么控制器的編程實(shí)際就是項(xiàng)目執(zhí)行的一個(gè)中間步驟，可以提供更有效的開發(fā)。使用可復(fù)用代碼、標(biāo)準(zhǔn)對(duì)象庫(kù)和復(fù)制工具，能夠進(jìn)一步提高開發(fā)效率。

在項(xiàng)目的整個(gè)編程階段，可使用測(cè)試程序進(jìn)行測(cè)試。如果需要在多個(gè)裝置上運(yùn)行，請(qǐng)先在單個(gè)裝置上運(yùn)行，并在部署到下一個(gè)裝置之前，對(duì)其進(jìn)行測(cè)試。

在開發(fā)過程中，使用復(fù)制工具不僅可以節(jié)省時(shí)間，還有助于程序開發(fā)時(shí)“誤操作”導(dǎo)致的問題。

02

是否允許修改和更新？

開發(fā)的應(yīng)用程序應(yīng)易于終用戶的理解。在系統(tǒng)集成項(xiàng)目結(jié)束時(shí)，開發(fā)或升級(jí)的應(yīng)用程序需要移交給客戶。好能夠以經(jīng)常使用系統(tǒng)的人容易理解的方式開發(fā)應(yīng)用程序。

系統(tǒng)集成商應(yīng)該成為客戶的合作伙伴，而不是開發(fā)“專有”的應(yīng)用程序。在整個(gè)項(xiàng)目的生命周期內(nèi)，系統(tǒng)集成商應(yīng)與客戶合作進(jìn)行設(shè)計(jì)審查。這有助于確?？蛻羝谕c系統(tǒng)集成商的設(shè)計(jì)之間的無縫銜接。

在開始編程之前，應(yīng)用程序的組織就應(yīng)該開始了。通常需要考慮多個(gè)因素，例如，應(yīng)用程序的控制對(duì)象，系統(tǒng)的大小和復(fù)雜性，項(xiàng)目是全新的還是對(duì)現(xiàn)有應(yīng)用的升級(jí)等。

同樣重要的是，與客戶深入討論，了解他們的標(biāo)準(zhǔn)術(shù)語(yǔ)和工廠區(qū)域，以便將其納入到應(yīng)用中。目標(biāo)是生成終用戶可以輕松導(dǎo)航以定位特定設(shè)備的應(yīng)用程序。

在生產(chǎn)過程中，易于導(dǎo)航對(duì)于進(jìn)行故障排除尤為重要。因?yàn)椤笆崂鞵LC代碼”而導(dǎo)致工藝過程或設(shè)備的任何計(jì)劃外停機(jī)都可能會(huì)帶來收入損失。

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