核聚變裝置EAST 極向場電源控制系統由三層網絡組成：WINDOWS 監測層、QNX
實時控制層、現場總線執行層。其中現場總線層負責采集大量現場設備的狀態并將其傳遞給實時控制層和監測層。本文描述了以太網現場總線控制器與QNX 和WINDOWS 不同操作系統之間的一種跨平臺網絡通信。實踐表明基于MODBUS TCP/IP 協議，利用Socket API建立的套接字使現場總線同時與兩種操作系統之間進行通信是完全可行的，而且是高效的。
關鍵詞: 極向場，以太網，現場總線, 網絡通信
Network Communication between differ Flats Of Ethernet Fieldbus Lanluguang Fupeng Yangyalong Wuyong (Institute of Plasma Physics Chinese Academy of Science，Hefei，230031) Abstract: The poloidal field power supply control system of the nuclear fusion device—EAST is constituted of three layer networks: WINDOWS monitor layer,QNX realtime control layer,Fieldbus layer.The Fieldbus layer is responsible for collecting a great deal of
equipments'status and delivering them to the control layer and the monitor layer. This paper
describes network communication between QNX ,Windows operate system. and Fieldbus. The practice shows that the communication on network between the two operate systems and Fieldbus is entirely feasible and high efficiency, with the socket built on socket API based on MODBUS TCP/IP.
Keywords: POLOIDAL FIELD, ETHERNET, FIELDBUS, NETWORK COMMUNICATION