摘要
计算机通过PPI协议与SIEMENS S7-200系列PLC串行通信不需要PLC方编写通信程序,不占用PLC的系统资源,读写PLC数据快速、可靠.基于此通信技术,用C++Builder编写的通信串行程序在多个实际项目中得到了应用,效果良好.
A computer can conduct serial communication via PLC with SIEMENS S7 -200 based on PPI protocol without any communication program written on PLC side, without occupying any PLC system resource. What is more, it can read data from PLC with high speed and efficiency. The serial communication program written in C ＋ ＋ Builder based on this technology has been applied to several live projects and nerformed well.
出处
《南京工程学院学报（自然科学版）》
2007年第1期53-57,共5页
Journal of Nanjing Institute of Technology(Natural Science Edition)
