PLC与智能仪表通信模块的设计实现

Design of Communication Module between PLC and Instrument

介绍了一种基于西门子PLC A SC II通信协议的P tP通信模块的设计实现;给出了实际应用中小数点不确定的A SC II数据转化为十六进制数的程序实现算法及程序流程。

This paper introduces the design of PtP communication module based on ASCII driver protocol of SIMATIC PLC. It also provides the program arithmetic and flow chart of transforming ASCII data without fixed decimal place into hex data.