22A-B1P5H204

22A-B1P5H204

在開發(fā)可編程控制器應(yīng)用程序之前需要考慮幾個因素。關(guān)鍵的是系統(tǒng)應(yīng)該如何架構(gòu)，以適合當(dāng)前的需要，并允許不久后輕松擴展的選項。

還應(yīng)考慮受控的工藝過程或設(shè)備,是否為它們選擇了正確的硬件和軟件包？如果被控制的系統(tǒng)是一條包裝線，是遵循OMAC PackML 模型還是使用客戶提供的模型？

在進行任何開發(fā)之前，還需要考慮適用的標(biāo)準(zhǔn)。應(yīng)用程序是否遵循任何ISA標(biāo)準(zhǔn),例如用于批處理控制的 ISA-88 模型？我們是否會使用客戶提供或供應(yīng)商提供的任何全局對象嗎？諸如此類的問題有助于提供對所需控制器內(nèi)存大小的洞察。

另一個需要考慮的重要因素是整體系統(tǒng)架構(gòu)設(shè)計。了解現(xiàn)有或潛在的新網(wǎng)絡(luò)架構(gòu)將是什么樣子。例如，系統(tǒng)是否需要幾個通信模塊來運行，同時提供穩(wěn)健和的網(wǎng)絡(luò)設(shè)計？

此外，還應(yīng)考慮與制造執(zhí)行系統(tǒng)（MES）和數(shù)據(jù)采集系統(tǒng)的任何潛在接口。這些系統(tǒng)是否需要任何標(biāo)簽結(jié)構(gòu)和命名，需要我們將其納入應(yīng)用程序中？這都是需要在開始編程前考慮的一些注意事項。

在設(shè)計控制系統(tǒng)時，應(yīng)確保編程符合應(yīng)用程序的當(dāng)前需求，并考慮到未來的可擴展性。

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