Post processing the received serial data

Question

Hello,
I want to process the data received by comport in labview where the transmitter device sends 22 bytes of data in this format 0x01 0x02 <18 bytes of information data with LSB first> 0x03 0x0D through the comport which should be read using Labview. I want to process the received 22 bytes in labview as below
1)      Leave the first 2 bytes and last two bytes
2)      From the left 18bytes each consecutive set of 3 bytes should be reversed (because the transmitter sends the LSB first) and stored in a text file.
Can anyone suggest me the steps to implement this.
Thanks.
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Answer 1

PatanGova wrote:
When first 2bytes are skipped and remaining 18 bytes are divided such that consecuitve 3 bytes are rearranged then it is considering 030D0102(which is rearranged as in spreadsheet2 of the attached image) which should not be.
It is ignoring the first two bytes.  That's what the String Subset is doing.  You are taking starting on the thrid byte and up to 18 bytes.  If you put your Recieved Data on the output of the VISA Read, you would see that.
PatanGova wrote:
But I want to 1)skip the first two bytes(0x01 0x02) and last two bytes(0x03 0x0D).
2)From the left 18bytes each consecutive set of 3 bytes should be reversed (because the transmitter sends the LSB first)
Your code is already doing that.
PatanGova wrote:
3) arranged 3bytes value should be converted into 2's complement and want to plot the data (2's complement of arranged 3bytes) continuously such that there will 6 continous plots.(each consisting 2's complement of the rearranged 3bytes)
Now that is a little more difficult.  A three byte Two's Compliment will take a little work.
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