This paper discusses the programming method of applying shiftregister of programmable controller (PLC) for switching signals control system.
本文论述了应用可编程序控制器(plc)的移位寄存器对开关量控制系统的编程方法。
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Based on the properties of Enhanced Parallel Port (EPP), an interface of shiftregister output has been developed using Complex Programmable Logic Device (CPLD).