2016/1/7 11:19:03 来源: 厦门泰尼电气有限公司
1746-HSCE2
1746-HSCE2
1746-HSCE2
2) FCS系统的基础是数字智能现场装置。数字智能现场装置是FCS系统的硬件支撑,是基础。FCS系统执行的是自动控制装置与现场装置之间的双向数字通信现场总线信号制。如果现场装置不遵循统一的总线协议,即相关的通信规约,不具备数字通信功能,那么所谓双向数字通信是一句空话,也不能称之为现场总线控制系统
(3) FCS系统的本身是信息处理现场化。对于一个控制系统,无论是采用DCS还是采用现场总线,系统需要处理的信息量至少是一样的。实际上,采用现场总线后,可以从现场得到更多的信息。现场总线系统的信息量没减少,甚至增加了,而传输信息的线缆却大大减少了,可以说,现场总线的本质就是信息处理的现场化。
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