First, the word is data. It is already plural so you do not add an "s" to the end. The singular, i.e. a single point of data, is know as a datum.
What you are seeing binary data. Instead of something human readable like letters or numbers, you are getting bytes that represent other symbols or even non-printable control characters in the ASCII table. What you need to find out is how the data is being sent. Is it bytes representing integers, or floating point values?
If you are getting binary data, then you do not want to use the Serial Configure VI with the terminal character enabled. The default values with nothing wired are Enabled and line feed. Because if you get a line feed character (ASCII 10) in the middle of a stream of meaningful data, the VISA read will end with that byte.
You do not want to use Bytes at Port. 99% of the time, that property node should not be used. If you were getting human readable data that had a linefeed character separating messages, then you just use a large number, larger than the longest message you expect to read, wired into the VISA Read.
If you are expecting binary data, like the characters appear to be, it is difficult to tell you exactly what to do. You'll have to read the manual for the device. Sometimes it is just reading a fixed number of characters. Sometimes you might have to look for special start and stop binary codes, or bytes that represent how many data bytes follow. But you have to read the manual to know what the protocol is for the data being sent.
