The functionality of the PLC has evolved over the years to include sequential relay control, motion control, process control, distributed control systems and networking. 功能的PLC已多年的发展,包括序贯继电控制,运动控制,过程控制,分布式控制系统和网络。
A graph method for analysing the sequential relay circuits 应用图论对时序继电电路的分析方法
Each agent has its own unattached function, also supports each other smoothly, and unites to construct a fast, sequential, efficient flatform for calculation of relay protection. 各代理既有自己的独立功能,又能够彼此支持,协调运作,共同构建了一个快速、有序、高效的整定计算管理平台。