基于ARM的PLC系统嵌入式硬件设计

PLC is born for 45 years, it has become the backbone of industrial control. For it's function becoming perfect, the application field expanding unceasingly, the volume is getting smaller, it become the industrial control technology progress and social development of the role immeasurably. PLC with its high reliability and easy operability, dominated the industry for decades, and control in this paper the research content is to design a PLC system based on ARM embedded module, bus structure, a new generation of PLC module using a dual-core CPU for data processing, compatible with a variety of communications and the digital quantity input/output protocol specification, thus improving the overall performance has higher anti-interference ability and guarantee under the condition of steady work. Focus on the hardware circuit design, and according to the actual debugging module design of PLC system to consummate gradually.