| Nowadays computer and network communication technologies is developing at very high speed. At the same time control networks (infranet) applies at lower control layer of Intranet is islanded and lagged than Intranet. It is necessary to inosculate Intranet and infranet to implement long-distant supervise and control product lines. This papers brings forwards a new kind of control network structure to realize infranet glueless connected to Intranet. This papers studies the interlink technology of Fieldbus control networks and the popular Ethernet in Intranet, and provided the structure of this networks named LAN/Fl eldbus, mainly studies the protocol and implement of the key equipment-LAN/Fieldbus gatreway which realizes data trasfer between Ethernet and Fieldbus. This papers also introduced the advantages and application of widely used realtime Multi-tasking operating system Vxworks and its socket network programming. |
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