SIEMENS 6ES5375-1LA21? 
咨詢★★★★  

軟件措施：

①故障檢測——軟件定期地檢測外界環(huán)境，如掉電、欠電壓、鋰電池電壓過低及強(qiáng)干擾信號(hào)等。以便及時(shí)進(jìn)行處理，有*的自檢及保護(hù)功能。
②信息保護(hù)與恢復(fù)——當(dāng)偶發(fā)性故障條件出現(xiàn)時(shí)，不破壞PLC內(nèi)部的信息。一旦故障條件消失，就可恢復(fù)正常，繼續(xù)原來的程序工作。所以，PLC在檢測到故障條件時(shí)，立即把現(xiàn)狀態(tài)存入存儲(chǔ)器，軟件配合對存儲(chǔ)器進(jìn)行封閉，禁止對存儲(chǔ)器的任何操作，以防存儲(chǔ)信息被沖掉。
③設(shè)置警戒時(shí)鐘WDT（看門狗）——如果程序每循環(huán)執(zhí)行時(shí)間超過了WDT規(guī)定的時(shí)間，預(yù)示了程序進(jìn)入死循環(huán)，立即報(bào)警。
④加強(qiáng)對程序的檢查和校驗(yàn)——一旦程序有錯(cuò)，立即報(bào)警，并停止執(zhí)行。
⑤對程序及動(dòng)態(tài)數(shù)據(jù)進(jìn)行電池后備——停電后，利用后備電池供電，有關(guān)狀態(tài)及信息就不會(huì)丟失。

   ①廈門莫格電氣自動(dòng)化有限公司     
：劉水仙（銷售工程師）                                        
   ②手   機(jī)：/
：3443643092                        
   ③郵    箱：3443643092
傳    真：（請備注劉工收)
   ④主營產(chǎn)品：AB，ABB，GE，本特利，?？怂共_，英維斯，西屋，艾默生，橫河

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LUBRIQUIP 1/8"NPT 1500PSI BALL CHECK VALVE C04 *NEW, LOT OF 2*
 
MILWAUKEE 2000 WOG 3/4" NPT BALL VALVE, 20CSOR-02 *NEW*
 
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500WOG 1/2" BALL VALVE 6W617N / 150W8P
 
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