A&D AD-4212B-101/102/201/301 Unit mass error, Clock battery error, Memory full, Memory type error

Display	Error code	Description
		Unit mass error
		The sample unit mass for the counting mode is too
		light. Storing and using it for counting will cause a
		counting error.
		Add samples to reach the specified number and press
		the	PRINT	key.
		Pressing the				key without adding samples will
					PRINT
		shift the balance to the counting mode. But, to acquire
		accurate weighing, be sure to add samples.
		Clock battery error
		The clock backup battery has been depleted.
		Press any key and set the time and date. The clock and
		calendar function works normally as long as the AC
		adapter is connected to the balance. If this error appears
		frequently, contact the local A&D dealer.
		Memory full
	(Blinking)	The amount of weighing data in memory has reached
		the maximum capacity.
		Delete data in memory to store new data. For details,
		refer to “14. DATA MEMORY”.
		Memory full
	(Illuminated)	The amount of calibration or calibration test data in
		memory has reached the maximum capacity (50 sets).
		The data in memory will be deleted automatically to
		store new data. For details, refer to “14. DATA
		MEMORY”.
		Memory type error
		Type of memory set in the function table and type of
		data stored are different.
		For details, refer to “14. DATA MEMORY”.
	EC, E00	Communications error
		A protocol error occurred in communications.
		Confirm the format, baud rate and parity.
	EC, E01	Undefined command error
		An undefined command was received.
		Confirm the command.
	EC, E02	Not ready
		A received command can not be processed.
		e.g. The balance received a Q command, but not in the
			weighing mode.
		e.g. The balance received a Q command while
			processing a RE-ZERO command.
		Adjust the delay time to transmit a command.
		80