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Epson A794-D100 manual Description of Printer

Models: A794-D100

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Chapter 1: About the Printer

A794 Owner’s Guide

Description of Printer

The A794 thermal receipt printer is extremely fast, quiet, and very reliable. With thermal printing technology, there is no ribbon cassette to change, and paper loading is extremely simple. The printer is small enough to fit almost anywhere and is easy to use with the receipt exiting from the top. There is no journal as it is kept electronically by the host system.

2	March 1999

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Epson A794-D100 manual Description of Printer

Contents

Owners Guide Page Legal Notices DisclaimerPower Supply Contents Communication Interface Programming InformationDescription of Printer Models Available InstallationsFeatures Options Description of Printer Communication Interfaces Models AvailableModel Identification Installations Setting up the printerFeatures On a Flat Surface Vertically see noteOptions Using the Printer Printer Controls Changing Paper Testing the PrinterPaper Feed Button Reset ButtonPrinter Controls Tone Changing Paper A794 Owner’s Guide Paper jams Troubleshooting the Printer Testing the Printer Poorly printed test printout Troubleshooting the Printer Troubleshooting the Printer Printer Tone and Green LEDPrinting Problems Printer Does Not WorkOrdering Thermal Paper Ordering Miscellaneous SuppliesThermal Paper Specifications How to OrderOrdering Thermal Paper ManufacturersOrdering Cash Drawers Ordering Power Supply and Power CordOrdering Miscellaneous Supplies Ordering Communication Cables Wall-Mount KitCharacter Sets Paper Specifications Print ZonesCharacters Characters Print ModesSize StandardPrint Zones for 80 mm Paper Paper SpecificationsPrint Zones Print Zones for 82.5 mm Paper Character Sets CodeCode Code Code Code Code Code Code Communication Overview RS-232C InterfaceSending Commands Using DOS to Send CommandsUsing Basic to Send Commands Communication OverviewRS-232C Interface Print Speed and TimingXON/XOFF Protocol DTR/DSR ProtocolRS-232C Technical Specifications Communication ConnectorsPower Connector Pin DB-9 Connector Pin DB-25 ConnectorCash Drawer Connector RS-232C SettingsIeee Bi-directional Parallel Connector Parallel InterfaceCommunication Interface List of Commands Comparisons Command Descriptions Programming InformationList of Commands Programming Information26 s c1 c2 n1 d1...nn dn NL nH Comparisons 1D 2A n1 n2 d1...dnCommand Descriptions Command ConventionsPrinter Function Commands Clear PrinterPerform Full Knife Cut Hexadecimal Decimal ExceptionsPerform Partial Knife Cut Generate ToneHexadecimal Decimal FormulasSelect Print Mode Value of nInitialize Printer Hexadecimal Decimal DefaultSelect Peripheral Device for Multi-Drop Range of n Select Paper Sensors to Output Paper End SignalsDefault of n Exceptions Enable or Disable Panel Button Select Sensors to Stop PrintingRead from Non-Volatile Memory Generate Pulse to Open Cash DrawerRange of k Value of p1Select Cut Mode and Cut Paper Write to Non-Volatile Memory NvramValue of n1 Value of n2Vertical Positioning and Print Commands Print and Feed One LineActivate Carriage Return Feed n Print LinesAdd n Extra Dot Rows Range of n DefaultFeed n Dot Rows Set Line Spacing to 1/6 Inch PrintSet Column Set Line Spacing Print and Feed PaperPrint and Feed n Lines Set Right-Side Character Spacing Horizontal Positioning CommandsHorizontal Tab Set Absolute Starting Position Value of k Default Set Horizontal Tab PositionsSet Relative Print Position Select Justification Compatibility Information A794 receipt vs. A793 receiptRange of nH Set Left MarginRange of nL Set Horizontal and Vertical Minimum Motion Units GS P x ySet Printing Area Width Select Single-Wide Characters Print Characteristics CommandsSelect Double-Wide Characters Hexadecimal Decimal Related Information Select 90 Degree Counter-Clockwise Rotated PrintSelect Pitch Column Width Select Character Set Define User-Defined Character Set Values and RangesSelect or Cancel Underline Mode ESC 0 0 Cancel User-Defined CharacterCopy Character Set from ROM to RAM Select or Cancel Emphasized Mode Select or Cancel Double StrikeSelect or Cancel Italic Print Select Character Code TableSelect International Character Set Select or Cancel 90 Degree Clockwise Rotated PrintSelect or Cancel Upside-Down Print Mode Select Or Cancel White/Black Reverse Print Mode Select or Cancel Smoothing ModeSelect Superscript or Subscript Modes Summary of Rotated PrintingGraphics Commands Print Raster GraphicsDownload BMP Logo Hexadecimal Decimal Value= Number of dots to be moved from the beginning of the line Select Bit Image Mode Select Single-Density Graphics Select Double-Density Graphics Select the Current Logo Define Downloaded Bit Image RangesPrint Downloaded Bit Image Convert 6 Dots/mm Bitmap to 8 Dots/mm BitmapHexadecimal 1D 2F m Decimal Value and Range of mPrinter Status Commands Request Alternate Status parallel printers only Transmit Peripheral Device Status RS-232C printers onlyTransmit Paper Sensor Status Hexadecimal Decimal ValuesTransmit Printer ID Hexadecimal 1D 49 n DecimalTransmit Printer ID, Remote Diagnostics Extension Values of nProgramming Information A794 Owner’s Guide Select or Cancel Automatic Status Back ASB Default ASB disabled Exceptions Undefined Off Not used. Fixed to off Transmit Status When n is out of the specified range, the command is ignored AX t Send Printer Software VersionPrint Test Form Real Time Commands Rules for Using Real Time CommandsBusy Line and Fault Conditions Moving Data through the BufferRecognizing Data from the Printer Real Time Request to Printer Real Time Status Transmission Related Information = Transmit Printer Status= Transmit Error Status = Transmit RS-232C Busy Status= Transmit Receipt Paper Status Real Time Printer Status Transmission Hexadecimal Decimal Value of ByteSelect Pitch of HRI Characters Bar Code CommandsSelect Printing Position of HRI Characters Select Bar Code Height Print Bar CodeUPC-A Default Formulas Select Bar Code WidthMode Commands Print and Return to Standard ModeCancel Print Data in Page Mode Hexadecimal 0C Decimal ExceptionsPrint Data in Page Mode Select Page ModeHexadecimal 1B 0C Decimal Exceptions Hexadecimal 1B 4C Decimal ExceptionsSelect Standard Mode Ascii ESC SSelect Print Direction in Page Mode Default ExceptionsSet Print Area in Page Mode Select Character Size Set Absolute Vertical Print Position in Page Mode Set Relative Vertical Print Position in Page Mode Hexadecimal 1D 3A Decimal Formulas Macro CommandsSelect or Cancel Macro Definition Value of t Execute MacroValue of r Flash Download Commands Printer operationSwitch to Flash Download Mode Return Boot Sector Firmware Part NumberReturn Segment Number Status of Flash Memory ESCReturn Boot Sector CRC Select Flash Memory Sector to DownloadGet Firmware CRC Range of n ExceptionsErase Selected Flash Sector Erase All Flash Contents Except Boot SectorReturn Main Program Flash CRC Download to Active Flash Sector Ch * 256 + cl Ffff hexadecimalMarch 127 Reset Firmware Erase User Flash SectorIndex Basic130 March March 131 132 March