可編程控制器,簡稱PLC(Programmable logic Controller),是指以計算機技術為基礎的新型工業控制裝置。在1987年電工委員會(International Electrical Committee)頒布的PLC標準草案中對PLC做了如下定義:
“PLC是一種專門為在工業環境下應用而設計的數字運算操作的電子裝置。它采用可以編制程序的存儲器,用來在其內部存儲執行邏輯運算、順序運算、計時、計數和算術運算等操作的指令,并能通過數字式或模擬式的輸入和輸出,控制各種類型的機械或生產過程。PLC及其有關的外圍設備都應該按易于與工業控制系統形成一個整體,易于擴展其功能的原則而設計。”
福州卓凱電子科技有限公司
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