6ES7 223-1PH22-0XA8

S7—200可編程控制器簡介

S7—200系列產(chǎn)品是具有的中央處理器，因其模塊化的靈活設(shè)計而具有廣泛的適用范圍，同時具有的性價比。S7—200無論單機運行，還是與其他設(shè)備組成網(wǎng)絡(luò)，都具有優(yōu)異的表現(xiàn)。

S7—200主要特征：①快速的中央運算處理能力；②豐富的編程指令集；③響應(yīng)快速數(shù)字量和模擬量輸入／輸出通道；④強大的通訊能力，豐富的擴展模塊；⑤操作便捷，易于掌握。

根據(jù)設(shè)備的運行特點和用戶的實際需要，基于S7—200型PLC控制，利用內(nèi)部軟繼電器實現(xiàn)過程控制，使系統(tǒng)控制簡便，提高了系統(tǒng)的穩(wěn)定性和可靠性，保證了產(chǎn)品質(zhì)量，提高了生產(chǎn)效率。

3．2 硬件電路的設(shè)計

在1號罐、2號罐內(nèi)，分別設(shè)置高液位，低液位控制器，控制器的數(shù)據(jù)信號通過導(dǎo)線連接至配電柜內(nèi)的控制電路，實現(xiàn)PLC的控制。圖2給出系統(tǒng)接口電路圖。

6ES7 223-1PH22-0XA8 

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