Energy beam control, signal processing, amplification, and computer logic using interference.
2
该自动化系统分为信号监测、PLC(可编程逻辑控制器)控制、上位机控制三大部分。
The system is composed of three subsystems, they are the signal monitor subsystem, the PLC (the Programmable Logical Controller) one and the host computer control ore.
3
文章主要是采用西门子公司的可编程逻辑控制器PLC - 200来实现交通信号灯的控制。
In the paper, traffic signal light is controlled by PLC-200 by using programming logic controller of Siemens company.
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