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介绍了一种基于IEC61131标准的微型一体化可编程逻辑控制器(PLC)软硬件设计方案。硬件采用分层设计和电磁兼容设计,使用高性能嵌入式处理器;软件采用移植嵌入式通用代码和自主开发核心代码的方式,优化了PLC系统任务调度方法,支持以太网和USB通信,支持多种标准的PLC编程语言。该微型一体化PLC功能丰富,稳定可靠,对国产微型PLC的开发具有很好的参考价值。
This paper introduces a kind of software and hardware design scheme based on IEC61131 standard of micro integrated programmable logic controller (PLC). The hardware adopts layered design and electromagnetic compatibility design, and uses high-performance embedded processor. The software adopts embedded universal code and independent development of core code to optimize task scheduling method of PLC system, supports Ethernet and USB communication, supports multiple A standard PLC programming language. The micro-integrated PLC features rich, stable and reliable, for the development of domestic micro-PLC has a good reference value.