C:\Users\Hamilton\Desktop\DRIVER_SI-150_x86_x64\Printer-tool\Printer tool\SI-150.exe Open COM2 err!
C:\Users\Hamilton\Desktop\DRIVER_SI-150_x86_x64\Printer-tool\Printer tool\SI-150.exe Open COM6 OK!
C:\Users\Hamilton\Desktop\DRIVER_SI-150_x86_x64\Printer-tool\Printer tool\SI-150.exe Close COM6 OK!