Yes, if you connect the cube to computer via USB cable, virtual serial comport become available and it provides simple prompt shell, echo is initially switched off! Simply press few times enter to get answer. Do not forgot to switch off flow control, speed is not important! For all available commands search in SDK manual. Remember, that RFC uses multiplex protocol and it is automatically set up when cube connects first time to RFC. If you would just close RFC, than the multiplex keeps running. To switch back for simple mode, simply cycle USB cable.