[sanelss]

there are a few ways to deal with serial data. You can read how many bytes were received(there is a vi to tell you this) but that doesn't necessarily mean you are grabbing a complete packet and that it's starting with a packet start.

Another way you can do it is to read a single byte at a time, store it in a buffer, and parse it for the structure of a packet then extract the data you are looking for.