摘要
研究自由端口通信在计算机与西门子S7-200PLC之间数据传输中的应用与实现。论述下位机PLC程序和上位PC机VB程序的设计思路以及具体实现,通过与西门子同类软件的性能比较,结果表明自由端口通信程序软件提高了计算机与PLC之间的数据传输效率,且运行稳定。
Lays special stress on the studying of application and implementation of free port communication in data transmission between PC and Siemens S7-200 PLC, and expounds the design ideas and implementation of PLC program and VB program in detail. According to comparing free port communication program with the similar software program of Siemens, the former increases highly the rate of data transmission between computer and S7-200 PLC, and running at a stable level.
出处
《计算机与数字工程》
2007年第7期169-171,179,共4页
Computer & Digital Engineering
