DeviceNet Intelligent Node Development And Its Application

Information exchange is covering all the sections ranging from local devices to control and management with several technologies' developing,such as control, computer, communication, network technology. Information technology's rapid development results in the innovation of auto-control system architecture. Fieldbus is a new technology corresponding to its development. Nowadays fieldbus is one of the highlights in auto-control technology development. It is titled as computer LAN in auto-control field. It symbolizes a starting-point of new age of control technology and definitely prompts important influence to auto-control's development. DeviceNet is an open-style fieldbus based on CAN technology. Low cost, high reliability, real time, device self-diagnostic are all its features, so it can provide high-quality solution for communication between local low-level devices. Incorporating Fuzzy algorithm, the control quality and reliability of the network control system is enhanced. The main contents of this paper: Fieldbus communication protocol model and introduction to several prominent fieldbuses; DeviceNet architecture and its application layer protocol; fuzzy control algorithm; construction of DeviceNet experimental platform and data acquisition; hardware circuit design, exploration and software exploration; By the perspective of DeviceNet protocol and analysis of collected data, complete the exploration of hardware and software interface. The explored node utilizes duplicate CPU configuration, and one of the two realizes the fuzzy algorithm.