摘要
本文介绍了工控软件"组态王"与西门子 S7-200PLC 的几种通信方式的实现,主要有 PPI 方式、MPI 方式、自由口方式、Profibus-DP 方式。
The paper introduces several communication ways between KingView and SIEMENS S7-200 Series PLC.PPI(Point-to- Point),MPI(Multi-Point),FreePort and Profibus-DP are described in details.
