3HAA3563-AGA
3HAA3563-AGA
◆品牌熱點\AB\ABB\施耐德\GE\西門子\發(fā)那科\FOXBORO\西屋
愛價格好++++++++貿+++++++++++++*降價
愛貨期短+++++++++++++++++++渠道好
愛產品好+++++++++易++++++++++*
愛數量多+++++++++++++++++++++大量庫存停產備件
愛售后服務好+++++++商++++++++++++質量保證
◆：洪工[銷售工程師]
★： *
★
★：
★公司全稱：
廈門航拓電氣有限公司
★公司地址：
廈門市湖里區(qū)華泰路5-11海西工業(yè)設計中心3F309
為了保證系統(tǒng)的安全性，使用了復雜的通信規(guī)約和檢錯技術。所謂通信規(guī)約就是一組規(guī)則，用以保證所傳輸的數據接收與發(fā)送。
目前在DCS和PLC系統(tǒng)中一般使用兩類通信手段，即同步的和異步的，同步通信依靠一個時鐘信號來調節(jié)數據的傳輸和接收，異步網絡采用沒有時鐘的報告系統(tǒng)。
FCS
FCS具有
（1）很好的開放性、互操作性和互換性。
（2）全數字通信。
（3）智能化與功能自治性。
（4）高度分散性。
（5）很強的適用性。
FCS的關鍵要點有三點：
1．FCS系統(tǒng)的核心是總線協(xié)議，即總線標準。
采用雙絞線、光纜或無線電方式傳輸數字信號，減少大量導線，提高了可靠性和抗*力。FCS從傳感器、變送器到調節(jié)器一直是數字信號，這就使我們很容易地處理更復雜、更精確的信號，同時數字通信的差錯功能可檢出傳輸中的誤碼。
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