国产欧美精品一区二区,中文字幕专区在线亚洲,国产精品美女网站在线观看,艾秋果冻传媒2021精品,在线免费一区二区,久久久久久青草大香综合精品,日韩美aaa特级毛片,欧美成人精品午夜免费影视

PLC logical system is an indispensable part of centre control system on HL-2A Tokamak. It is time-consuming to maintain wiring of logic control system before transformation. A PLC Optical Fiber Ring Network has been designed and introduced to PLC logic control system on HL-2A through the application of a new generation real-time Ethernet PROFINET. Eight switch devices named SCALANCE X202-IRT form a closed loop through the optical fiber plug in 2 BFOC ports, each PLC connect with its switch device with a RJ-45 electrical jack. Important signals related to the discharge still using hard-wiring and all the other signals using network transmission. Within the PLC ring network, Central control makes centralized management for other subsystems so that makes the ability of forecast and accident diagnose disposal more powerful and quickly during plasma discharge failure. The results of discharge experiment show that ring network is well suited for slow control system. It greatly makes the whole control system logic relationship clear and protect the latter research investment. The new Logic control system can satisfy the need of slow control of HL-2A and HL-2M. It makes maintenance more convenient and fault location more accurate and faster. It is greatly improve discharge efficiency. 