Description
为保证通信的完整,大部分DCS厂家都能提供冗余数据公路。
为了保证系统的安全性,使用了复杂的通信规约和检错技术。所谓通信规约就是一组规则,用以保证所传输的数据被接收,并且被理解得和发送的数据一样。
目前在DCS系统中一般使用两类通信手段,即同步的和异步的,同步通信依*一个时钟信号来调节数据的传输和接收,异步网络采用没有时钟的报告系统。
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