Serial interface connection example, Txd Rxd Dsr Dtr | Epson T81

Confidential

2.1.1.5 Serial interface connection example

Host side	Printer side
(DTE ex.8251)
TXD	RXD
DSR	DTR
CTS	RTS
RXD	TXD
DTR	DSR
FG	FG
SG	SG

NOTES: 1. Set the handshaking so that the transmit data can be received.

(DTE: Data Terminal Equipment) (DCE: Data Circuit Terminating Equipment)

2.Transmit data to the printer after turning on the power and initializing the printer.

2.1.1.6Notes on setting DIP switch 2-1 to ON

1)The printer mechanism stops but does not become busy when: an error has occurred, the cover is open, printing stops due to a paper-end, or paper is fed using the paper feed button.

2)When setting DIP switch 2-1 to ON to enable handshaking with the printer, be sure to check the printer status using the GS a command and the ASB function. In this setting, the default value of n for GS a is 2. The printer automatically transmits the printer status, depending on online/offline changes.

3)When using DLE EOT, DLE ENQ, and DLE DC4 be sure that the receive buffer does not become full.

•When using a host that cannot transmit data when the printer is busy:

If an error has occurred, DLE EOT, DLE ENQ, and DLE DC4 cannot be used when the printer is busy due to a receive buffer-full state.

•When using a host that can transmit data when the printer is busy:

When the receive buffer becomes full while transmitting bit-image data, DLE EOT, DLE ENQ or DLE DC4 used while sending the bit-image data is processed as bit-image data. The data transmitted when the receive buffer is full may be lost.

Example: Check the printer status using GS r after transmitting each line of data and use the 4 KB receive buffer. Transmit one line of data so that the receive buffer does not become full.

TITLE

EPSON

	TM-T81	SHEET	NO
	TM-T81	REVISION
	Specification
	Specification		NEXT	SHEET
	(STANDARD)	A	NEXT	SHEET
	(STANDARD)	A	15	14
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Epson T81 specifications Serial interface connection example, Txd Rxd Dsr Dtr

Contents

TM-T81 Specification Revision SheetTM-T81 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 FS g 1 m a1 a2 a3 a4 nL nH d1...dk Function 5 GS E pL pH fn a1 n1L n1HFunction 48 GS H pL pH fn m d1 d2 d3 d4 GS 8 L p1 p2 p3 p4 m fn parameters GS∗x y d1...dk FS q n xL xH yL yH d1...dk1 ... xL xH yL yH d1...dknGS v 0 m xL xH yL yH d1...dk General Specifications Printing Specifications Character Specifications Autocutter1 Character Size Paper Specification Paper Roll Supply Device 1 Specified Original Paper Type No. Single-color paper AF50KS-E Printable Area Printing and Cutting PositionsInternal Buffer Electrical Characteristics 1 Current Consumption Operating 2 Limitation of the Printing Length on Print Ratio EMI and Safety Standards Applied ReliabilityEMI 12.1 Operating Temperature and Humidity Range Environmental Conditions Installation Configuration SpecificationsSwitching between online and offline Interface 1 RS-232 serial interface 1 TM-T81 Printer Status and Signals GS a TM-T81 Printer Status and Signals DLE ENQ 1 or DLE ENQ 2 commands1.4 XON/XOFF transmit timing 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 Connectors Power Supply Connector1 Power Supply Connector Pin Assignments 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 DIP Switches XON/XOFF DTR/DSR2 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 Error Processing Error Types 1 Errors That Automatically Recover2 Errors That Can Possibly Recover Printer Operation When an Error Occurs Unrecoverable ErrorsCPU Cover Open Sensor Print Buffer-full Printing Case Specifications External Dimensions and MassColor External Appearance Standard Accessories Options and ConsumablesOptions Consumables Commands Command NotationExplanation of Terms MSB LSB Control Commands Ascii DLE EOT n Ascii CanAscii DLE EOT Epson Epson DLE ENQ n Ascii DLE ENQ DLE DC4 fn m t fn = Ascii DLE DC4Fn = DLE DC4 fn a b fn = DLE DC4 fn d1…d7 Fn =ESC SP n D1…d7 ESC ! n ESC $ nL nH ESC % nESC & y c1 c2 x1 d1 Dy ⋅x1 Xk d1 Dy ⋅xk Dy ⋅x1 Dy ⋅xk ESC ∗ m nL nH d1...dk ESC − nD1...dk ESC 3 n ESC = nESC ? n ESC D n1...nk NUL ESC E nN1...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 a n ESC c 4 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 GS a pL pH n m Test patternHexadecimal dump print Printer status print GS D pL pH m a1 b1...ak bk GS E pL pH fn parameters Function 1 GS E p L p H fn d1 d2 Fn =Format GS E pL pH fn 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 HN1 L N1 H ... ak nk L nk H Type of customized value Epson Function 6 GS E p L p H fn a Fn = Function 11 GS E pL pH fn a d1...dk fn =D1 ... dk Function 12 GS E p L p H fn a Fn = GS H pL pH fn parametersFunction 48 GS H p L p H fn m d1 d2 d3 d4 GS K pL pH fn parameters Function 50 GS K p L p H fn m Fn =Format Function No Function name Select the print speed GS L GS 8 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 51 GS L p L p H m fn Fn = 3 Function 64 GS L p L p H m fn d1 d2 Fn =Function 65 GS L p L p H m fn d1 d2 d3 Function 66 GS L p L p H m fn kc1 kc2 Fn = FunctionKc1 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 070 GS k p L p H cn fn m Cn = 48 , fn = Function 080 GS k p L p H cn fn m d1 … dk Cn = 48 , fn =D1…dk Function 081 GS k p L p H cn fn m Cn = 48 , fn = Function 082 GS k p L p H cn fn m Cn = 48 , fn =P H cn fn m Function 165 GS k p L p H cn fn n1 n2 Cn = 49 , fn = Function 167 GS k p L p H cn fn n 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 ∗ x y d1...dk GS / m= x ⋅ y ⋅ GS B n GS H n GS I n Epson GS L nL nH GS P x yGS V m B GS V m n GS W nL nH GS \ nL nHGS r t m GS a n Name Turn smoothing mode on/off Format GS f n GS g 0 m nL nHL n H GS g 2 m nL nH GS k m d1...dk NUL GS k m n d1...dn D1...dn = 11 ≤ d ≤ 57 where d1 = JAN13 / EAN13 = 12 Bar code system Range of n Range of d= 11 = 7 GS r n GS w n Obsolete Commands ESCESC m 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