This may be quite simple if you have enough knowledge of serial communications in CVI. Basically you can use serial example (<example folder>\rs232\serial.prj) to perform initial tests, but you will need to know the printer protoco to create the proper message for it to print the correct message (there can be some control codes to add to the text to be printed for font choice, paper dimensions, alignment, bold/italic/underline, line feed and so on).
