853-028873-497 逻辑运算和数据存贮

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P0970VB?-?FOXBORO
P0971DX?-?FOXBORO
P0971WV?-?FOXBORO
P0971YQ?-?FOXBORO
P0972KX?-?FOXBORO
P0972QM?-?FOXBORO
P103RK?-?FOXBORO
P110A-NADNCS14N?-?FOXBORO
P110ANADNCS14N?-?FOXBORO

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描述

屏蔽层、接地线和大地有可能构成闭合环路,在变化磁场的作用下,屏蔽层内有会出现感应电流,通过屏蔽层与芯线之间的耦合,干扰信号回路。若系统地与其他接地处理混乱,所产生的地环流就可能在地线上产生不等电位分布,影响DCS内逻辑电路和模拟电路的正常工作。DCS工作的逻辑电压干扰容限较低,逻辑地电位的分布干扰容易影响DCS的逻辑运算和数据存贮,造成数据混乱、程序跑飞或死机。模拟地电位的分布将导致测量精度下降,引起对信号测控的严重失真和误动作。

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