# RS-232 and RS-485 software configurability?

I would like to connect a anemometer(RS-485, DB9) to the PC. The PC has a serial port with DB9 connector. I couldn't find the specification of the serial port. Is that RS-232 standard or RS-485? Most commonly used the RS-232, so I assume that is RS-232. Is there a possibility to configure the serial port from RS-232 to RS-485, or I just need a RS-232/RS-485 converter?

• @Kicsi Mano Then give up on the PC. Your time critical makes this a task for real-time computing and you can't do that easily on a PC. Get a microcontroller, an RS-485 chip and do the time critical part of the processing on the micro. Then send the data to the PC using say RS-232 or an USB to TTL serial converter. There are plenty of microcontrollers which have two or more UARTs. – AndrejaKo Oct 4 '12 at 11:34