The finite state machine normally controls the board by e.g. the input field signals. Sending a MAI message to the board will force the control value of the analogue input pin to the selected state given in the message. With the “Remove mask” function, the control value of the pin is set to the field again. The function is only valid for analogue input pins. The message does not influence the (automatic)mode of the board.  

Possible error messages coming from the board
%FAT-UNKCMD-BTSERIAL, Unknown command received
%MAI-UNKCMD-BTSERIAL, No valid value
%MAI-UNKCMD-BTSERIAL, Unknown tagname received