First of all, a serial connection has only one 'input'. I think what you are asking, is how to parse the single string you read into 14 separate channels. Second, you have not specified the language you are using. In LabVIEW, you would use the VISA functions to configure and read the data at the serial port. There are a couple of examples that you can look at. For parsing the string, you could use something like Spreadsheet String to Array with a space as a delimiter.