PLC实现LED数码管动态扫描数据显示

摘要

According to the characteristics that the PLC performs scanning periodically, a method of driving two digitrons by a few PLC fan-outs is introduced. This paper also realizes displaying changing at two digitrons. Its soft-ware and hardware design are also introduced. This method can meet the requirement of industrial control and lower the cost.%根据PLC周期性扫描的特点，介绍了一种利用少量PLC输出点驱动两组数码管的方法，同时实现了在两组数码管上显示变化的数据，并介绍了软、硬件设计实现的实例，在满足工业控制要求的同时降低了成本。