Select justification, Set left margin | Cognitive Solutions A799

Revision D 12/09

Chapter 4: Programming Commands 49

previous data. This behavior can be used to an application’s advantage to provide the ability to create compound characters on the receipt station.

This command also functions differently in the A793 emulation when used in graphics:

n x 2 = Number of dots to be moved from the beginning of the line when this command is followed by a graphic command.

Select justification

ASCII	ESC a n
Hexadecimal	1B 61 n
Decimal	27 97 n
Value of n:	0, 48	= Left aligned
	1, 49	= Center aligned
	2, 50	= Right aligned
Range of n:	0–2, 48–50
Default:	0 (Left aligned)

Specifies the alignment of characters, graphics, logos, and bar codes on the receipt station according to the above table.

Related information

On the LEGACY emulation printer, this command is valid only at the beginning of a line.

Range of n on A793 is 0–255 using low 2 bits only:

00	left aligned
01	center

10right aligned

11center

Set left margin

ASCII	GS L nL nH
Hexadecimal	1D 4C nL nH
Decimal	29 76 nL nH
Range of nL:	0–255
Range of nH:	0–255
Default:	576 dots (the maximum printable area)
Formulas

Sets the left margin of the printing area. The left margin is set to ((nH X 256) + nL) times horizontal motion unit) inches. The horizontal motion units are set by the set horizontal and vertical minimum motion units command (1D 50), described in this manual.

The width of the printing area is set by the set printing area width command (1D 57), which follows this command. See the set printing area width command in this document for a description of that command.

If the setting exceeds the printable area, the maximum value of the printable area is used. The maximum printable area is 576 dots. See the illustration.

To set the left margin to one inch at the default horizontal motion unit of 1/203 inches, send the four-byte string:

GS L 203 0

Or, to set the left margin to two inches at the default horizontal motion unit of 1/203 units per inch, send the four-byte string:

GS L 150 1

Where 2 inches = 406/203, and 406 = (1 X 256) + 150.

Exceptions:

The command is effective only at the beginning of a line. This command is ignored if the line buffer is not empty.

A799-PG00001D

Image 49

Cognitive Solutions A799 manual Select justification, Set left margin, Range of n Default, GS L nL nH

Contents

Programming Guide Page Contents A799 Programming Guide Text characteristics commands Contents Vertical and horizontal positioning Graphics Real time commandsStatus 105 Unsolicited status mode110 111 118 117119 120 Where to find the basics How to use this guideWhere to find advanced technical information Support About this Guide A799 Programming Guide Start-up Diagnostics Diagnostics and Configuration Remote diagnostics Runtime diagnostics For more information about See this section Indicator Sequence Condition IndicatorsUsing the Printer , in the A799 User Guide Printer configuration Configuring the printer Communication interface RS-232C serial interface settings Enable or disable data scope mode Diagnostic modesTo run the data scope mode To exit the data scope mode Electronic Journal Datascope Diagnostic Enable or disable receipt test modeTo run the receipt test mode To exit the receipt test mode Select the emulation/software options sub-menu to set Printer settings and functions Select the hardware options sub-menu to set Diagnostics and Configuration Comparison to A793 Overview of commands24 n1 n2 2A m n1 n2 d1...dn 1B 59 n1 n2 d1...dn Two-color commands comparison A794 to A7991D 2A n1 n2 d1...dn TPG LogoEZ colorization commands Hexadecimal TPG ColorPOS two-color and color interpreted commands Character appearance Width specificationsPrint zones Print zones for 80mm paper Print zones for 82.5mm paper Rotated printing commandsUpside down Rotated CW 1B 7B n 1B 56 n Emulation modes Print setup in emulation modes Code hexadecimal Command Commands listed by functionPrinter actions Print and paper feed Vertical and horizontal positioning Text characteristics26 s c1 c2 Graphics Batch mode Unsolicited status modeStatus Real time Macros ModeUser data storage Flash download Ethernet setup commands Command descriptions Command conventionsClear printer Perform partial knife cut Perform full knife cutGenerate tone Select peripheral device for multi-drop Initialize printer Select paper sensors to output paper-end signals Select sensors to stop printing Enable or disable panel buttonGenerate pulse to open cash drawer Set current color Select cut mode and cut paper Set paper type ColorPOS Print test form Set interpretation of Set current color commandA799 native US t Print and carriage return Print and feed paper one lineFeed n print lines Feed n dot rows Print Add n extra dot rows Print and feed n lines Print and feed paper Set horizontal and vertical minimum motion units Horizontal tabSet column GS P x y Set vertical line spacing to 1/6 inch Set absolute starting positionCompatibility information A799 receipt vs. A793 receipt Set horizontal tab positions Set vertical line spacingValue of k To move to the left Set relative print position Select justification Range of n DefaultSet left margin GS L nL nH Maximum value of the printable Area Set printing area width Select double-wide characters Text characteristics commandsSelect single-wide characters Select 90 degree counter-clockwise rotated print Set right-side character spacing Select pitch column widthPitch Columns 80mm Paper 82.5mm Paper Value of n Bit1 Function Select print modeMm paper Define user-defined character set Select or cancel user-defined character setException Values and ranges Define extended user-defined character set Select or cancel underline mode Select or cancel emphasized mode Cancel user-defined characterCopy character set from ROM to RAM Select or cancel italic print Select or cancel double-strike Select international character code Select or cancel 90 degree clockwise rotated print Value of n A799 native mode A793 emulation Emulation Select or cancel upside-down print modeSelect international character set Select character size Select or cancel white/black reverse print modeCharacter height selection Hex Decimal Width Height Set smoothing Reverse color text mode ColorPOS Select font ID number Text strike-through mode ColorPOSSelect font style number Hexadecimal 1D F0 01 n Decimal 29 240 1 n Value of n 128 Download font Save font ID number as default font at power upDownload font list Select superscript or subscript modes Download BMP logo Select active user-defined character set Select bit image mode Select single-density graphics Print advanced raster graphicsSelect double-density graphics Value of r GS # n Select the current logo Value of n Value of n1 Value of n2 Value of d Define downloaded bit image Print downloaded bit image Value of m Print mode Vertical DPIPrint raster graphics Value and range of m Print raster color graphics ColorPOS Print raster monochrome graphics ColorPOS Print Flash Logo Download logo image ColorPOSDefine Flash Logos Max n1 = Monochrome shade mode ColorPOS Merge watermark mode ColorPOSApply shading to logo ColorPOS Logo print with color plane swap ColorPOS Color shade mode ColorPOSForm and merge real time surround graphic ColorPOS Hexadecimal 1D 89 n m Decimal Save graphics buffer as logo ColorPOS Background logo print mode ColorPOS Shade and store logo ColorPOS Apply margin message mode ColorPOS1D 99 l m n o Value of l Set temporary max target speed Logo print with knife cutValues of m Decimal Values Value of f Set LogoEZ colorizationValue descriptions = 2 link watermark printing Set LogoEZ attribute mapping LogoEZ utility default settingsS = 0, 0 Attributes substituted table Original attribute mapped table Convert 6-dots/mm bitmap to 8-dots/mm bitmap Enable constant speed logos Transmit peripheral device status RS-232C printers only Status command introductionHexadecimal 1B 75 Decimal Value of returned byte Bit Transmit paper sensor status Request alternate status A793 emulation onlyHexadecimal 1B 75 n Decimal Value and Range of n Value of n Function Description Transmit printer ID Printer ID Specification ID Hexadecimal= 2 or 50 Type ID Bit Off/On Hex Decimal Function = 4 or 52 Logo Definition Bit Off/On Hex Decimal Function Hex Dec Remote diagnostic item Function Transmit printer ID, remote diagnostics extensionGS I @ n Value of n Transmit status Send printer software version Rules for using real time commands Real time commandsPreferred implementation Alternate implementation Moving data through the buffer Busy line and fault conditionsReal time status transmission = Transmit RS-232C Busy Status = Transmit receipt paper status = Transmit error status Bit Status Hex Decimal FunctionBit Status Hex Decimal Function Real time request to printer Real time printer status transmission Real time commands disabledValue of byte Bit Status Hex Decimal Function Default USM disabled Select or cancel unsolicited status mode USMGS a n Hexadecimal 1D 61 n Decimal 29 97 n Value of n Bit Off/On Hex Decimal Status for USM Second byte error information Fourth byte paper sensor information Unsolicited status mode USM Batch mode responseRecognizing data from the printer Select printing position of HRI characters Select bar code height Select pitch of HRI charactersPrint bar code Length Bar codeInteger n = nHnL 1D 6B m nL nH d1 . . . dn GS k Print multiple barcodes Print GS1 DataBar formerly RSS, data length specified Print GS1 DataBar formerly RSS, null terminatedType Value and Ranges Description Set GS1 DataBar formerly RSS parameters Related Information Value Dimension Row height Sample symbol descriptionSelect bar code width Cancel print data in page mode Print and return to standard modePrint data in page mode Hexadecimal 0C Decimal Select page mode Select print direction in page mode Select standard mode Maximum area specification in page mode Set print area in page mode Set relative vertical print position in page mode Set absolute vertical print position in page modeGS \ nL nH Execute macro Select or cancel macro definitionGS r t m Hexadecimal 1D 5E r t m Decimal 29 94 r t m Value of r Read from user data storage Write to user data storageRead from non-volatile memory Write to non-volatile memory Nvram Flash memory user sectors allocation US & s c1 c2 character 1 data ... character k data Expanded flash memory allocation1F 26 s c1 c2 character 1 data ... character k data 31 38 s c1 c2 character 1 data ... character k data Value of n = 49 Ascii n = 1 HEX Erase user flash sector For m = User storage status ColorPOS Return boot sector firmware part number Switch to flash download mode Select flash Memory sector to download Return segment number status of flash memoryGet firmware CRC Return microprocessor CRC Return main program flash CRC Erase all flash contents except boot sectorErase selected flash sector Download to active flash sector Restore default settings Reset firmwareSetting IP address Setting Net Mask Setting raw Tcpip port Setting the GatewayBootP LP Daemon Inactivity timeout Dhcp auto-configurationKeep-alive pings N1= Programming Commands 2E m n rL rH d1 … dn By command code 57 n1, n2...n8 4B n1 n2 d1...dn59 n1 n2 d1...dn 5C n1 n2 2A n1 n2 d1...dn AL aH cL cH d1...dn4C nL nH 6B m n d1...dn 6B m d1...dkB c d e fL fH M n o 08 01 n1 n2 n3 n4 Appendix B Resident Character Sets Code page 437 US Character sets Code page 737 Greek Code page 850 Multilingual Code page 852 Slavic Code page 857 Turkish Code page 858 with Eurosymbol Code page 860 Portuguese Code page 862 Hebrew Code page 863 French Canadian Code page 865 Nordic Code page 866 Cyrillic Code page 1252 Windows Latin