Epson TM-T85P manual ESC n, 34Commands

[Notes]	• When DTR/DSR control is selected, the printer transmits only 1
	byte after confirming that the host is ready to receive data (DSR
	signal is SPACE).
	If the host computer is not ready to receive data (DSR signal is
	MARK), the printer waits until the host is ready. When XON/
	XOFF control is selected, the printer transmits only 1 byte without
	checking the DSR signal.

•This command is executed when the data is processed in the receive buffer. Therefore, there may be a time lag between receiving the command and transmitting the status, depending on the receive buffer status.

•When Auto Status Back (ASB) is enabled using GS a, the status transmitted by ESC v and the ASB status must be differentiated.

•The status to be transmitted is shown in the table below:

Bit	Off/On	Hex	Decimal	Function
0	Off	00	0	Paper roll near-end sensor. Paper is
				present.
1	On	03	3	Paper roll near-end sensor.
				Paper is not present.
2	Off	00	0	Paper roll end sensor.
				Paper is present.
3	On	(0C)	(12)	Paper roll end sensor.
				Paper is not present.
4	Off	00	0	Not used. Fixed to Off.
5	-	-	-	Undefined.
6	-	-	-	Undefined.
7	Off	00	0	Not used. Fixed to Off.

Bits 2and 3: When the paper roll end sensor detects a paper end, the printer goes off-line and does not execute this command. Therefore, bits 2 and 3 do not transmit the status of paper end.

[Reference] DLE EOT, GS a, GS r

ESC { n

[Name]	Turns on/off upside-down printing mode
[Format]	ASCII	ESC	{	n
	Hex	1B	7B	n
	Decimal	27	123	n
[Range]	0 ≤ n ≤ 255

[Description] Turns upside-down printing mode on or off.

5-34Commands