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IEC 61131-3-based PLC Implemented by means of FPGA

机译:通过FPGA实现基于IEC 61131-3的PLC

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The paper discusses the design process of a programmable logic controller implemented by means of FPGA device. Designed PLC is to be compliant with EN 61131-3 standard. Diiferent aspects of instruction list and hardware architecture designing are presented, e.g. PLC structure with particular emphasis on central processing unit or memory map. Conclusions on an EN 61131-3 Standard are also shown. The developed PLC is implemented using FPGA device. This gives opportunity to develop interesting solutions. For example, using dual port RAM gives us opportunity to develop bit/word access without necessity of masking bits. Up to date FPGA devices have also disadvantage - there are no tri-state buffers inside. This is the reason for using multiplexers that control traffic on busses.
机译:本文讨论了通过FPGA器件实现的可编程逻辑控制器的设计过程。设计的PLC必须符合EN 61131-3标准。提出了指令列表和硬件架构设计的不同方面,例如。 PLC结构特别强调中央处理器或内存映射。还显示了EN 61131-3标准的结论。开发的PLC使用FPGA器件实现。这为开发有趣的解决方案提供了机会。例如,使用双端口RAM使我们有机会开发位/字访问而无需屏蔽位。最新的FPGA器件也有缺点-内部没有三态缓冲器。这就是使用控制总线流量的多路复用器的原因。

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