How to parse a binary string

Hi people,

I read a binary string to a Sonic anemometer of campbell. It is transmitted via RS 232 9600 baud. The problem is the following:

I read the entry stamp from time to time (all 300 ms). The outpit of the sonic is much faster (every 30ms). There is only a certain amount of stored bytes I've read. To get a correct value, I find 2-byte endpoint AA HEX and HEX 55. A complete sentence consists of 12 bytes 10 bytes each endpoint U8 values and 2 bytes. How to search for them?

My idea was to see how many bytes, I read, convert each in a binary table and then show them as boolean table all together (see annex VI). It works but I can not find the expression just binary AA Hex and 55. And it is as interesting as the first column (bit 0) and last (bit 7) always remain 'false. ' I'm doing something wrong?

So it would have been more useful if you would have posted the example that has been read data.  Because I didn't have everything I've done a few.  The attached VI will look for places where the hexadecimal byte AA then 55.  It then divides the sections of data using this information.  I wrote it two ways because I was typing this I thought of a better way that uses string functions to break the data into a data table.

Tags: NI Software

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