When OPTION button is used as alternate, control command can transmit ON/OFF
registration command. When OPTION button is used as momentary, control command
can transmit ON registration command only.
Memory size of control command is 32bytes (8 commands). The data length that can be sent
at a time is 32bytes.
If more than 32bytes data is transmitted, please send the data after answer-back is
returned.
If control command is transmitted before answer-back is returned, it may not be executed.
During serial communication, the operation of button may not be valid.