Desktop PC RT Target communication with host through RS232

Hi,

I am using desktop PC as RT Target. I want to run a standalone program on RT target when it switches on. The RT target is connected to FPGA through ethernet port. So I want to communicate with host PC through RS232 serial interface to send/receive data as the ethernet communication is not possible. Is the desktop PC RT target compatible with RS232 communication with host and simultaneously with the FPGA target? If yes, is there any protocol for this communication?

I am using LabVIEW 2012 and RT moudule.

Thanking in advance,

Rashmi