In order to meet the demand of different control systems, the function, capacity, operation rate and communication capability of programmable logic controller were enhanced continually.
为适应不同的控制系统需求，可编程序控制器的功能、容量、运算速度、以及通信能力都在不断地增强。
2
Meanwhile, research about the relationship between scan circle of programmable logic controller and communication performance has been put up.
同时还进行了可编程序控制器扫描周期与通讯速率和稳定性的关联性研究。
3
Communication between computer and programmablecontroller plays a very import role in the control system of Product Line.