2.6.3  利用Visual C++实现PC与S7-200 PLC数字量输入与输出\mscomm.cpp
.......................................................\mscomm.h
.......................................................\plc.aps
.......................................................\plc.clw
.......................................................\plc.cpp
.......................................................\plc.dsp
.......................................................\plc.dsw
.......................................................\plc.h
.......................................................\plc.ncb
.......................................................\plc.opt
.......................................................\plc.plg
.......................................................\plc.rc
.......................................................\plcDlg.cpp
.......................................................\plcDlg.h
.......................................................\ReadMe.txt
.......................................................\res\plc.ico
.......................................................\...\plc.rc2
.......................................................\resource.h
.......................................................\S7-200PLC端程序\S7-200PLC.mwp
.......................................................\...............\S7-200plc.txt
.......................................................\StdAfx.cpp
.......................................................\StdAfx.h
.......................................................\res
.......................................................\S7-200PLC端程序
2.6.3  利用Visual C++实现PC与S7-200 PLC数字量输入与输出