可编程控制器数据采样特殊性问题讨论

PLC Data Sampling Particularity Discussion

可编程控制器采样周期由扫描周期决定,在上位机和可编程控制器组成控制系统中,上位机以通讯方式获得可编程控制器的采样数据周期由查询采样数据的间隔时间所决定,主要从可编程控制器逻辑编程和上位机采样数据处理两个方面入手,提出解决上位机获得采样周期较短的实时采样数据一种方法。

PLC scan cycle by the decision of the sampling period,in the host computer and control system composed of programmable controllers,host computer in order to obtain programmable controller communication cycle sampling data sampled by the query interval determined by the data.This paper programmable logic controller from a host computer programming and data-processing two-pronged approach to sampling is proposed to resolve host computer to obtain a shorter cycle,real-time sampling sampled data method.