The Development Of The Intelligent Module--The Fieldbus Gateway Based On The WorldFIP Protocol

With the development of technology of the computer, communication technology and information technology, The Technique of Fieldbus has become more and more popular.As the Fieldbus Technique has been widely applied in Industrial Control Area, the control system of new generation--Fieldbus Control System(FCS) is becoming so advanced and practical as to produce enormous economic benefits and social benefit.As a main international Fieldbus, WorldFIP has turned into a mature technique after ten year's application and amelioration .It has communication products with complete variety and development tools . It is a real-time and opening industrial control network which can be used in the intermittent or in the successional control system course. In WorldFIP system, Equipments between top and bottom layer use single protocol. WorldFIP can preferably combine real-time quality with efficiency requirement. In other words, based on the premise that do not influence real-time communication, WorldFIP is able to transfer random information on the same bus. Thereby it have laid a solid foundation for the integration with IT technology .The main research content of this paper is the design of the Fieldbus Gateway which can solve communication problems between Fieldbus and Internet.As a module in the whole system, the Gateway is not only a node in WorldFIP control system but also a node in Internet.The design of the gateway mainly includes software and hardware design. WorldFIP communication part is designing with WorldFIP special-purpose device, utilizing 32 bits embedded ARM processor s3c4510b and some other supplementary devices to come to realize the network part of the gateway and memory system. Thus it realized the interconnection between WorldFIP and Internet. In software, for realizing the real-time qualities of control system I transplant RTOS-uC/OC-II on the platform of gateway and I also transplant the TCP/IP stack called LwIP to realize network function of the gateway. In WorldFIP, using FULLFIP2's FIP DEVICE MANAGER come to realize the functions of Fieldbus. And during the course of developping and design, I carry on the relevant debugging to the hardware of the system and software, and carry on the test of the relevant function.