Hi,
The error sounds like the data being received is not in the right format. Serial data is transferred one byte at a time, and each byte contains, in a specific format, a start bit, data bits, parity, and stop bits. A framing error occurs when a byte of data is received, but it is not in the format expected.
Reading the follwoing KB might help:
http://digital.ni.com/public.nsf/websearch/13A20C0F9DF265FB86256FC60066D9C2?OpenDocument
Regards,
Lilly
National Instruments UK