鎽� 瑕侊細鏈枃涓昏浠嬬垂浜哖ROFIBUS-DP鐝�(xi脿n)鍫寸附绶氬湪姘熷寲瀛稿伐妤�(y猫)鎺у埗绯荤当(t菕ng)涓殑鎳夌敤浠ュ強DCS鍜孲7-400H鍐椾綑绯荤当(t菕ng)鐨勭恫绲＄祼妲�銆傞噸榛炲垎鏋愪簡鍩轰簬DP/DP鑰﹀悎鍣ㄧ殑澶氫富缍茬怠绯荤当(t菕ng)鑰﹀悎浠ュ強鍩轰簬Y-LINK鐨勫啑浣欑恫绲¤嚜鍕曞垏鎻涜ō瑷�銆� 闂滈嵉瑭烇細PROFIBUS-DP S7-400H鍐椾綑绯荤当(t菕ng) DP/DP鑰﹀悎鍣� Y-LINK Abstract: This paper mainly describes the application of the PROFIBUS-DP network system in the Fluorine chemistry process control and the network topology of DCS and S7-400H redundant system . The multi-master network system coupling via DP/DP coupler and the auto-switch design of redundant network via Y-LINK device are deeply analyzed. 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