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介绍了静态显示芯片 MAX 7219的工作原理,提出了一个适于 PLC的结构简单且十分实用的静态显示系统,并以SIEMENS公司的S7-200PLC为例,讨论了硬件连接和软件编程。
This paper introduces the working principle of the MAX 7219 static display chip and presents a simple and practical static display system suitable for PLC. The hardware connection and software programming are discussed with SIEMENS S7-200PLC as an example.