Serial Communication Error Creation

[KevinO]

Okay, here goes.

This is my second VI and I'm concerned if I'm using best practices for creating and handling errors.  My VI writes data out of a serial port and then waits for a specific response.

The response should look like:

/* General Packet Definition (Input Data)
   0        $A5 signature byte
   1        Address - (0=PC)
   2        packet length - total packet length, address through CRC
   3     command ()
   x        parameters or data
   y        2 byte CRC -   */

If I do not read the signature byte, if the packet is not addressed to me, the packet length is incorrect or I never receive information I need to generate and error, close the port and exit the subVI and report the error.

I've created my own error codes and edited the Error Code file.

Am I doing this right?  Comments, suggestions or insults...all is appreciated .

Thanks

[Eric_K]

KevinO,

From everything that I can see in your code, it looks like you are programming correctly.  Your code is also very neat and easy to read, thank you! 

Eric K

Applications Engineering

National Instruments