LIU Hai. ANALYSIS AND APPLICATION OF MODBUS COMMUNICATION IN OVATION SYSTEM[J]. Thermal power generation, 2004, (12): 53-54. DOI: 10.19666/j.rlfd.2004.12.017.
OVATION系统的MODBUS通讯分析及应用
摘要
华能珞璜电厂 2号机组DCS改造中
运用MODBUS通信协议
成功地实现了不同DCS之间的数据通讯以及OVATIONDCS与现场PLC之间的数据交换
既达到了主机控制系统全面升级改造的目的
又保留了原系统可用的现场控制设备
节约了系统改造成本
Abstract
The realizing process of series communication with OVATION system has been analysed in detail. In retrofitting distributed control system (DCS) of unit No.2 at Huaneng Luohuang Power Plant
data communication among different DCS. as well as data exchange between OVATION DCS and field PLC has been successfully realized by using MODBUS communication protocal. Both the retrofitting purpose of all-round upgrading the main unit control system and of retaining usable field control facilities have been achieved