Hello folks, I'm still quite new to LabView, so please bear with me. I am interested in making a subVI which will receive bytes over a VISA serial port and write each line to a larger (concatenated) string, so it can later be stored to a file. In simplest terms, I want to record all data over the serial port until the 8 tests are complete. There are going to be 6 instances of this in the parent VI, so it needs to be modular. I am expecting a series of 8 strings from the serial communication source, each line starts with 'Passed' or 'Failed' then the test. e.g.: Passed test1 Failed test2 Passed test3 Passed test4 . . . The current method I'm using is to react when there are bytes present in the serial buffer, then identify a match (currently it only identifies a 'Passed' match). Is there a way to get a match for the substring for 'Passed' OR 'Failed'? How can I put all of these strings into a larger string? Concatenate Strings won't work because I will have the same string input to the VI... Any assistance/input would be welcomed, thanks.

Here is a basic example of how to use concatenate strings. Since it is still very difficult to know if you are calling your subVI multiple times or if you are calling it once and want it to read all the results I will not comment much further on that. This example would read all of the results and format an output string which you can write to a file later or do whatever you want with it. The basic constructs of what you will need are illustrated here. How to encorporate them into your application will be difficult to say without any code beyond the bit you posted.

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Concatenate strings received from VISA

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Perfect, thanks for clearing that up!

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Concatenate strings received from VISA

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