ASML A1306 PCB 859-0929-006
S7-200的擴(kuò)展配置是由S7-200的基本單元和擴(kuò)展模塊組成。其擴(kuò)展模塊的數(shù)量受兩個(gè)條件約束:一個(gè)是基本單元能帶擴(kuò)展模塊的數(shù)量;另一個(gè)是基本單元的電源承受擴(kuò)展模塊消耗DC5V總線電流的能力。
編址舉例ASML A1306 PCB 859-0929-006由CPU222組成的擴(kuò)展
由CPU222組成的擴(kuò)展配置可以由CPU222基本單元和*多兩個(gè)擴(kuò)展模塊組成,CPU222可以向擴(kuò)展單元提供的DC5V電流為340mA。
例1:若擴(kuò)展單元為16DI/16DO的EM223模塊,查得該模塊耗DC5V總線電流為150/160 mA。小于CPU222可以提供DC5V的電流,所以這種配置是可行
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ASML A1306 PCB 859-0929-006
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我們誠(chéng)意尋求長(zhǎng)期合作的分銷商,一起開拓市場(chǎng),共贏發(fā)展。
Trusted T6300是一個(gè)基于三重化處理器的系統(tǒng),內(nèi)部所有的重要電路均采用三重化容錯(cuò)的設(shè)計(jì)。Trusted T6300保證系統(tǒng)在內(nèi)部出現(xiàn)故障的狀態(tài)下,仍能正確地執(zhí)行程序。系統(tǒng)所有的模塊均能在線熱更換。這種設(shè)計(jì)使得Trusted T6300系統(tǒng)幾乎可以保持在線。Trusted T6300被用來(lái)實(shí)時(shí)地處理各種復(fù)雜和危險(xiǎn)的生產(chǎn)過(guò)程的控制,接受現(xiàn)場(chǎng)信號(hào),執(zhí)行邏輯運(yùn)算、PID等各種控制程序,輸出控制信號(hào),驅(qū)動(dòng)現(xiàn)場(chǎng)執(zhí)行單元。Trusted的應(yīng)用程序采用IEC 61131 TOOLSET軟件編制。
Trusted T6300連續(xù)地、高速地進(jìn)行上述操作,實(shí)現(xiàn)快速的閉環(huán)數(shù)據(jù)處理。如果Trusted系統(tǒng)中發(fā)生了一個(gè)內(nèi)部故障,這個(gè)故障將通過(guò)表決器被限制。系統(tǒng)中廣泛分布的表決芯片確保系統(tǒng)中的任何內(nèi)部故障都不會(huì)傳播到程序處理過(guò)程中去,并且能夠準(zhǔn)確地指示出系統(tǒng)內(nèi)部故障的位置。每個(gè)寄存器和程序控制器都以同樣的方式進(jìn)行表決。所有的內(nèi)部通訊都有接收電路進(jìn)行通訊校驗(yàn)。
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