西门子plc系统的step7及wincc的授权资料，可以直接运行。-Siemens plc system wincc authorization step7 and information can be directly run.

里面包含西门子PLC,S7通讯协议，可以通讯plc1500，plc1200,内含源码(It contains Siemens PLC and S7 communication protocol, which can communicate with plc1500 and plc1200, including source code)