Research Of Embedded PLC Based On ARM

Traditional PLC is one very Real-time controller, which plays an important role in the industry control field. As a result of the more complicate and complex control, traditional PLC already could not satisfy the request of the intelligent and humanity. Embedded Real-Time system has the advantages of enhancing the reliability of system, improving the developmental efficiency and reducing the development cycle. It is the main mode to develop PLC in virtue of Embedded Real-Time system.With the fast development of information technology, embedded system has already applied to the control field, consumer and other fields. It becomes important to research the technology of the embedded system. In view of the individual and intelligent request in industry controller, a kind of research platform based on ARM andμC/OS-II is exploited facing to the industrial control field. The hardware flat of the embedded PLC, which is centered on the LPC2294 produced by Philips, is designed after the analysis on the ARM7 kernel. It is including import block, export block, patulous memorizer block and communication network block in the system. Embedded Real-Time Operation systemμC/OS-II and its working principle is analyzed deeply. And thenμC/OS-II system is transplanted on the ARM microcontroller successfully. To enhance the ability of communication network, Ethernet block is added in the system, and embedded TCP/IP protocol is transplanted. It is convenient to monitor the system in long distance. At last, the transplanted codes are tested by the experimentation of schedulers of tasks.After test, the system based on Embedded Real-Time Operation SystemμC/OS-II and ARM can satisfy the request of the stabilization and Real-Time in the industrial control field.