TM-T81 Printer Status and Signals, GS a | Epson specification

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2.1.1.3 Interface connector terminal assignments and signal functions

Interface connector terminal assignments and signal functions are described in Table 2.1.1.

Table 2.1.1 TM-T81 Printer Status and Signals

Pin	Signal	Signal
number	name	direction
1	FG	—

2	TXD	Output
3	RXD	Input

4	RTS	Output

6	DSR	Input

7	SG	—
20	DTR	Output

Function

Frame ground Transmit data Receive data Same as DTR signal

This signal indicates whether the host computer can receive data.

SPACE indicates that the host computer can receive data, and MARK indicates that the host computer cannot receive data.

When DTR/DSR control is selected, the printer transmits data after confirming this signal (except when transmitting data by DLE EOT, and

GS a).

When XON/XOFF control is selected, the printer does not check this signal.

Changing the DIP switch setting enables this signal to be used as a reset signal for the printer. (See Section 3.3.3.)

The printer is reset when the signal remains MARK for 1 ms or more. (See Section 2.1.1.7.)

Signal ground

1)When DTR/DSR control is selected, this signal indicates whether the printer is busy. SPACE indicates that the printer is ready to receive data, and MARK indicates that the printer is busy. The busy condition can be changed by using DIP SW 2-1 as follows (See Section 3.3.3.):

			DIP SW 2-1 status
		Printer status	ON	OFF
	1.	During the period from when the power is	BUSY	BUSY
		turned on (including resetting using the
		interface) to when the printer is ready to
		receive data.
Offline	2.	During the self-test.	BUSY	BUSY
	3.	When the cover is open.	—	BUSY
	4.	During paper feeding using the paper feed	—	BUSY
		button.
		button.
	5.	When the printer stops printing due to a	—	BUSY
		paper-end.
	6.	During macro executing standby status.	—	BUSY
	7.	When an error has occurred.	—	BUSY
	8.	When the receive buffer becomes full.(*1)	BUSY	BUSY

TITLE

EPSON

	TM-T81	SHEET	NO
	TM-T81	REVISION
	Specification
	Specification		NEXT	SHEET
	(STANDARD)	A	NEXT	SHEET
	(STANDARD)	A	13	12
			13	12

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Epson specifications TM-T81 Printer Status and Signals, GS a

Contents

TM-T81 TM-T81 SpecificationRevision Sheet Revisions Design Section Sheet Rev. No Document Cover Rev Confidentiality General Contents Changed Contents REV. Sheet Epson Specification Standard Confidentiality Agreement General Features Confidential Print Buffer-full Printing Function 48 GS H pL pH fn m d1 d2 d3 d4 FS g 1 m a1 a2 a3 a4 nL nH d1...dkFunction 5 GS E pL pH fn a1 n1L n1H GS 8 L p1 p2 p3 p4 m fn parameters FS q n xL xH yL yH d1...dk1 ... xL xH yL yH d1...dkn GS∗x y d1...dkGS v 0 m xL xH yL yH d1...dk General Specifications Printing Specifications Autocutter Character Specifications1 Character Size Paper Specification Paper Roll Supply Device 1 Specified Original Paper Type No. Single-color paper AF50KS-E Printing and Cutting Positions Printable AreaInternal Buffer Electrical Characteristics 1 Current Consumption Operating 2 Limitation of the Printing Length on Print Ratio Reliability EMI and Safety Standards AppliedEMI 12.1 Operating Temperature and Humidity Range Environmental Conditions Installation Switching between online and offline ConfigurationSpecifications Interface 1 RS-232 serial interface 1 TM-T81 Printer Status and Signals GS a 1.4 XON/XOFF transmit timing TM-T81 Printer Status and SignalsDLE ENQ 1 or DLE ENQ 2 commands 2 XON/XOFF Transmit Timing Serial interface connection example TXD RXD DSR DTR Reset Switching 4 Reset DC Characteristics USB transmission specifications 1 USB function USB Universal Serial Bus Interface Outline 1 Power Supply Connector Pin Assignments ConnectorsPower Supply Connector GND Shell F.G Drawer Kick-out Connector Modular Connector 2 Drawer Kick-out Connector Pin Assignments 4 Drawer Circuitry List of Commands Functions ESC a ESC c ESC d ESC p ESC t FS g GS $ GS a GS D GS E GS H GS K GS L / GS 8 L GS k GS ∗ GS \ GS a GS b GS f GS g GS h GS k GS r GS w Epson Character Code Tables Common to all pages International Character Set USA 0 PC437 USA, Standard Europe HEX 1 Katakana 2 PC850 Multilingual 3 PC860 Portuguese 4 PC863 Canadian-French 5 PC865 Nordic 16 WPC1252 17 PC866 Cyrillic #2 18 PC852 Latin2 19 PC858 Euro 255 User-defined International Character Sets USA Switches and Buttons Power Button Panel Buttons XON/XOFF DTR/DSR DIP Switches2 Transmission Speed DIP Switch 4 DIP Switch 2-3 USB interface specification DIP Switch 7 DIP Switch 2-3 Customized value 8 Types of the Customized Value Panel LED Indicators 1 Panel Switches and Indicators Self-test Hexadecimal Dumping C D E F G H I J NV Graphics Print Mode 1 Errors That Automatically Recover Error Processing Error Types2 Errors That Can Possibly Recover Unrecoverable Errors Printer Operation When an Error OccursCPU Cover Open Sensor Print Buffer-full Printing Color Case SpecificationsExternal Dimensions and Mass External Appearance Options Standard AccessoriesOptions and Consumables Consumables Command Notation CommandsExplanation of Terms MSB LSB Control Commands Ascii Ascii Can DLE EOT nAscii DLE EOT Epson Epson DLE ENQ n Ascii DLE ENQ Ascii DLE DC4 DLE DC4 fn m t fn =Fn = DLE DC4 fn a b fn = ESC SP n DLE DC4 fn d1…d7Fn = D1…d7 ESC ! n ESC & y c1 c2 x1 d1 Dy ⋅x1 Xk d1 Dy ⋅xk ESC $ nL nHESC % n Dy ⋅x1 Dy ⋅xk ESC − n ESC ∗ m nL nH d1...dkD1...dk ESC = n ESC 3 nESC ? n ESC E n ESC D n1...nk NULN1...nk ESC G n ESC J n ESC M n ESC R n ESC T n ESC V n ESC \ nL nH Dx L Dx H Dy L Dy H ESC c 4 n ESC a nESC c 5 n ESC d n ESC p m t1 t2 ESC n FS g 1 m a1 a2 a3 a4 n L n H d1...dk FS g 2 m a1 a2 a3 a4 n L n H GS ! n GS $ nL nH Hexadecimal dump print GS a pL pH n mTest pattern Printer status print GS D pL pH m a1 b1...ak bk Format GS E pL pH fn parametersFunction 1 GS E p L p H fn d1 d2 Fn = GS E pL pH fn N1 L N1 H ... ak nk L nk H Function 2 GS E p L p H fn d1 d2 d3 Fn =Function 5 GS E p L p H fn a1 n1 L n1 H...ak nk L nk H Type of customized value Epson Function 11 GS E pL pH fn a d1...dk fn = Function 6 GS E p L p H fn a Fn =D1 ... dk GS H pL pH fn parameters Function 12 GS E p L p H fn a Fn =Function 48 GS H p L p H fn m d1 d2 d3 d4 Format Function No Function name GS K pL pH fn parametersFunction 50 GS K p L p H fn m Fn = Select the print speed GS 8 L GS LGS L pL pH m fn Function 48 GS L p L p H m fn Fn = 0 Function 50 GS L p L p H m fn Fn = 2 Function 64 GS L p L p H m fn d1 d2 Fn = Function 51 GS L p L p H m fn Fn = 3Function 65 GS L p L p H m fn d1 d2 d3 Function Function 66 GS L p L p H m fn kc1 kc2 Fn =Kc1 Kc2 Function 69 GS L p L p H m fn kc1 kc2 x y Vertical direction Horizontal direction 180 dpi 90 dpi P H m fn a bx by c x L x H y L y H d1...dk Bx , by GS k pL pH cn fn parameters Function 065 GS k p L p H cn fn n Cn = 48 , fn = Function 066 GS k p L p H cn fn n Cn = 48 , fn = Function 067 GS k p L p H cn fn n Cn = 48 , fn = Function 068 GS k p L p H cn fn n Cn = 48 , fn = Function 069 GS k p L p H cn fn m n Cn = 48 , fn = Function 080 GS k p L p H cn fn m d1 … dk Cn = 48 , fn = Function 070 GS k p L p H cn fn m Cn = 48 , fn =D1…dk Function 082 GS k p L p H cn fn m Cn = 48 , fn = Function 081 GS k p L p H cn fn m Cn = 48 , fn =P H cn fn m Function 167 GS k p L p H cn fn n Cn = 49 , fn = Function 165 GS k p L p H cn fn n1 n2 Cn = 49 , fn =N2 = Function 169 GS k p L p H cn fn n Cn = 49 , fn = Function 180 GS k p L p H cn fn m d1 … dk Cn = 49 , fn = Function 181 GS k p L p H cn fn m Cn = 49 , fn = Function 182 GS k p L p H cn fn m Cn = 49 , fn = GS / m GS ∗ x y d1...dk= x ⋅ y ⋅ GS B n GS H n GS I n Epson GS P x y GS L nL nHGS V m B GS V m n GS \ nL nH GS W nL nHGS r t m GS a n Name Turn smoothing mode on/off Format GS g 0 m nL nH GS f nL n H GS g 2 m nL nH GS k m d1...dk NUL GS k m n d1...dn D1...dn = 11 = 11 ≤ d ≤ 57 where d1 = JAN13 / EAN13 = 12Bar code system Range of n Range of d = 7 GS r n GS w n ESC m Obsolete CommandsESC 6DF ESC u n FS p n m X H y L y H d1...dk1...x L x H y L y H d1...dkn GS v 0 m x L x H y L y H d1...dk Appendix a Miscellaneous Notes Table A.1 Paper Feeding Amount App.3 App.2 Other Notes Appendix B Paper Roll Setup Replacing the Paper Roll Appendix C Recovery from the Auto Cutter Error Table D.1 Adjustment Positions Figure D.1 Near-end Adjusting Position Appendix E Print Head Cleaning Figure E.1 Print Head Thermal Elements Appendix F Notes on Using the Drawer KICK-OUT Connector T1 ⋅ 2ms Ii. For DLE DC4 ∗WAIT300MS Return About updating the maintenance counter Power off procedure by the host Appendix H Notes on Printing 2-DIMENSIONAL Code Figure I-1 Slant of the Print Appendix J Notes on Using the ASB Status END