◆公司专业销售大型进口各种品牌DCS系统模块备件：AB系列模块，施耐德，ABB机器人，西门子数控类，其他欧美日产品

◆联系人：陈小真

◆电话：0591- 

◆手机：18005006971

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◆传真：0591-83489960

◆公司地址：福州市区乌龙江大道正荣财富中心B座八层

DCS存在的疑问

　　(1)1对1构造。1台外表，1对传输线，单向传输1个信号。这种构造形成接线杂乱、工程周期长、设备费用高、维护艰难。

　　(2)牢靠性差。模仿信号传输不只精确度低，且易受搅扰。为此选用各种办法进步抗搅扰性和传输精确度，其结果是添加了本钱。

　　(3)失控状况。操作员在操控室既不了解现场模仿外表的作业状况，也不能对其进行参数调整，更不能猜测事端，致使操作员对其处于失控状况。因操作员不能及时发现现场外表毛病，而发作事端已层出不穷。

　　(4)互操作性差。虽然模仿外表已一致4～20mA信号规范，可大有些技能参数仍由制作商自定，致使不一样品牌外表无法交换。因而致运用户依靠制作厂，无法运用功用价格比*优的配套外表，乃至呈现单个制作商垄断市场的局势。

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