s7200 usb connection configuration

I have s7200 PLC,PC/PPI cable (USB connection) and Microwin V4.0 program.But ı couldnt communicate each other.Can you tell me how can I configured.Also in communication window it is wrote PC/PPI cable (COM1) on Network parameters interface.,Its true or not.
Help me pls.Thanks

In the MicroWin software you should see PC/PG settings in the bottom left corner. It should allow you to select PC adapter and then USB not serial. If you can not select USB go to your "Control Panel" and set up your software and interface under "PG / PC interface"