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foxplc
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樓主  發(fā)表于: 2008-07-22 21:28
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此問(wèn)題涉及到的貼圖和找到的有關(guān)資料有以上6副

控制說(shuō)明:

 熱電偶T8+,T8-,接入顯示儀表.該儀表輸出AO2+,AO2-,進(jìn)入直流信號輸入轉換器.轉換器出兩路信號.一路:AO2A+,AO2A-,

入堿液調節閥,二路AO2B+,AO2B-入熱解爐補氧調節閥.堿液調節閥輸出AI30入PLC,顯示儀表輸出AI14入PLC,


請問(wèn) (1) AI30,AI14入PLC時(shí)量程設為C四線(xiàn)制,還是D二線(xiàn)制,為什么?

          (2) 如果量程設置不正確,在S7-300中寫(xiě)了處理模擬量的FC1功能是 否就不能下載到plc中去了?

          

本帖最近評分記錄:
  • 下載積分:+3(jake2008y) 鼓勵一下!
    cvlsam
    富士低壓,POD(觸摸屏),PLC專(zhuān)賣(mài)
    級別: VIP會(huì )員

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    1樓  發(fā)表于: 2008-07-24 22:03
    1)選用二綫制還是4綫制取決於您的現場(chǎng)測控設備,如果您現場(chǎng)設備為二綫制,即測控信號與電源信號共享,那麼就選用二綫制。

    2)跳綫模式不影響功能塊的下載。

    3)置於問(wèn)題3,恐怕就屬於您中文版Step7軟體的Bug吧。

    以上~~~

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