Data to RS232 from USB Tilt Sensor

Hello, We have a motion sensor that interfaces via usb to a windows pc, they provide a pearl api for accessing the data. We need this data read for X, Y and Z, converted to angles and then transmitted as fast as possible on an RS232 port (38400 baud) The output format is $*PFEC,*gpatt,000.0,+xx.x,-yy.y*hh<CR><LF> $*PFEC,*gphve,[login to view URL],A<CR><LF> We would ideally want 20ms transmission time or better. i have attached the manual for the pcb