以PC机为上位机。PLC为下位机，针 对三菱Fx系列PLC与上位机之间的通讯协议，给出了利用VB6．0实现上位机与PLC串行通信的详细设计流程。-To PC, as the host computer. PLC for the next crew, for the Fx series Mitsubishi PLC and PC communication protocol between the given host computer using VB6.0 PLC serial commu

以PC机为上位机。PLC为下位机，针 对三菱Fx系列PLC与上位机之间的通讯协议，给出了利用VB6．0实现上位机与PLC串行通信的详细设计流程。-To PC, as the host computer. PLC for the next crew, for the Fx series Mitsubishi PLC and PC communication protocol between the given host computer using VB6.0 PLC serial commu

使用C#封装的Sample_References.dll文件，速度慢，单个读取vi