How can i communicate between Siemens PLC and Visual C# via USB PPI cable as serial communication? When i plug it to my pc so it is identified as a HID device. i want it as com port.(serial pot). how can i achieve this? must i attach any kind of dll to my project? Anyone can help me?
The driver for the device has to expose the device as a COM port. If it doesn't, you're going to have to go to the manufacturer of the device and either get an updated driver that does this or get a SDK for the device that allows some other method of communication.