If you want to read and save serial data with labview, you can also selectively call historical data to generate charts. What should I do?
Let me give you an idea for your reference. First, determine the serial port data format, transmission time and other issues, and then choose the appropriate serial port operation mode (is it always monitoring or regular query? ); Second, to selectively call data to generate charts, you can consider using a database (such as LabSQL package +Access database), so that you can save the read data, and then you can query, modify and delete the data at any time.