用VC++ 6.0与三菱PLC 作上位机通讯原理，界面还有部分预留给未来的使用，可以控制马达的动作，当然你自己要会写PLC的代码。--Using VC++ 6.0 with Mitsubishi PLC for PC communication theory, the interface there are some reserved for future use, to control motor movement, of course, you have to write PLC code.

PLC单片机在工业上的应用越来越广，这几个源代码都是关于PLC单片机写PC之间的通讯的，不错，值得一看。-PLC microcomputer applications in industry more widely, these source code is written on the PLC MCU communication between the PC, well, worth a visit.