Citizen Systems iDP-3551, iDP-3550 user manual ETX-STX Mode, Ffh Yes Stx-Etx, Ret

*ETX-STX Mode					1
	STX/ETX Mode Start
					Sends ENQ
	Sends ENQ				Receives Status
NO	Receives Status				Receives Check Byte	YES
	YES				NO
	Data Buffer Empty ?				Status Error ?
					Check Byte
					= Test Byte ?
		NO			YES
	YES
	Sends STX					NO
	Odd Parity Check ?
					Sends ETX	Sends CAN
					(Print)	NO
	Sets Test Byte To	Sets	Test	Byte	To
	FFH	00			YES
NO
					STX-ETX
					Mode End
	YES
	Exclusive ORs Test Byte
	and Sent Data
	Test Byte
					STX-ETX Mode Data
	Sends Data to Printer				Block Ready to Send ?
	Last Data in 1 Block ?					RET
	1