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S7-200PPPI
- S7-200+PPI通信读写(VB程序)-S7-200+PPI communicate read and write (VB program)
PLC S7300&400(TCP)
- 西门子PLC S7-300 & S7-400系列TCP连接上位机程序,无需PLC端再编程,源码包含C#和VB,亲测S7-300 CPU-314C-2 PN/DP可用。(PLC connected PC via RJ45 directly and do Memory write and read)