By forcing a pin –could by digital or analogue- to a given value, the mode of the pin is changed to hand and as already described, the finite state machine has no longer influence on these forced pins. In some situations it is necessary to set the pin back to automatic mode. This is done by the RTA command.   

Possible error messages coming from the board
%FAT-UNKCMD-BTSERIAL, Unknown command received
%RTA-UNKCMD-BTSERIAL, Unknown tagname received