March 127 | Epson A794-D100 specs

A794 Owner’s Guide

Chapter 6: Programming Information

Select Memory Type (SRAM/Flash) Where to Save Logos or User-Defined Fonts

Specifies whether to load the logos or user-defined characters to flash memory or to RAM (volatile memory). The selection remains in effect until it is changed via this command or until the power cycles.

ASCII	GS " n
Hexadecimal	1D 22 n
Decimal	29 34 n
Value of n	48-51

n = 48 (ASCII n = 0)

Loads active logo to RAM only. This is used to print a special logo but not have it take up flash memory. A logo defined following this command is not preserved over a power cycle.

n = 49 (ASCII n = 1)

Loads active logo to flash memory. This is the default condition for logo flash storage. A logo defined following this command is stored in flash memory.

n = 50 (ASCII n = 2)

Loads user-defined characters to RAM only. This is the default condition for user- defined character storage. Any user-defined characters defined following this command are not preserved over a power cycle.

n = 51 (ASCII n = 3)

Loads user-defined characters to flash memory. An application must use this command to store user-defined characters in flash memory. Any user-defined characters defined following this command are stored in flash memory. A user-defined character cannot be redefined in flash memory. The flash memory page must be erased by an application before redefining user-defined characters. For more information, see the Erase User Flash Sector (1D 40 n) Command earlier in this section.

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Epson A794-D100 manual March 127

Contents

Owners Guide Page Disclaimer Legal Notices Power Supply Contents Programming Information Communication Interface Features Options InstallationsDescription of Printer Models Available Description of Printer Model Identification Models AvailableCommunication Interfaces Setting up the printer Installations On a Flat Surface Vertically see note Features Options Printer Controls Changing Paper Testing the Printer Using the Printer Printer Controls Reset ButtonPaper Feed Button Tone Changing Paper A794 Owner’s Guide Paper jams Troubleshooting the Printer Testing the Printer Poorly printed test printout Troubleshooting the Printer Printer Tone and Green LED Troubleshooting the Printer Printer Does Not Work Printing Problems Ordering Miscellaneous Supplies Ordering Thermal Paper How to Order Thermal Paper SpecificationsOrdering Thermal Paper Manufacturers Ordering Miscellaneous Supplies Ordering Power Supply and Power CordOrdering Cash Drawers Wall-Mount Kit Ordering Communication Cables Characters Paper Specifications Print ZonesCharacter Sets Print Modes CharactersSize Standard Print Zones Paper SpecificationsPrint Zones for 80 mm Paper Print Zones for 82.5 mm Paper Code Character Sets Code Code Code Code Code Code Code RS-232C Interface Communication Overview Using DOS to Send Commands Sending CommandsUsing Basic to Send Commands Communication Overview Print Speed and Timing RS-232C Interface DTR/DSR Protocol XON/XOFF Protocol Communication Connectors RS-232C Technical SpecificationsPower Connector Pin DB-9 Connector Pin DB-25 Connector RS-232C Settings Cash Drawer Connector Parallel Interface Ieee Bi-directional Parallel Connector Communication Interface Programming Information List of Commands Comparisons Command Descriptions Programming Information List of Commands 26 s c1 c2 n1 d1...nn dn NL nH 1D 2A n1 n2 d1...dn Comparisons Command Conventions Command Descriptions Clear Printer Printer Function CommandsPerform Full Knife Cut Hexadecimal Decimal Exceptions Generate Tone Perform Partial Knife CutHexadecimal Decimal Formulas Value of n Select Print Mode Select Peripheral Device for Multi-Drop Hexadecimal Decimal DefaultInitialize Printer Default of n Exceptions Select Paper Sensors to Output Paper End SignalsRange of n Select Sensors to Stop Printing Enable or Disable Panel Button Generate Pulse to Open Cash Drawer Read from Non-Volatile MemoryRange of k Value of p1 Write to Non-Volatile Memory Nvram Select Cut Mode and Cut PaperValue of n1 Value of n2 Print and Feed One Line Vertical Positioning and Print CommandsActivate Carriage Return Feed n Print Lines Feed n Dot Rows Range of n DefaultAdd n Extra Dot Rows Set Column PrintSet Line Spacing to 1/6 Inch Print and Feed Paper Set Line Spacing Print and Feed n Lines Horizontal Tab Horizontal Positioning CommandsSet Right-Side Character Spacing Set Absolute Starting Position Set Horizontal Tab Positions Value of k Default Set Relative Print Position Compatibility Information A794 receipt vs. A793 receipt Select Justification Range of nL Set Left MarginRange of nH GS P x y Set Horizontal and Vertical Minimum Motion Units Set Printing Area Width Select Double-Wide Characters Print Characteristics CommandsSelect Single-Wide Characters Select Pitch Column Width Select 90 Degree Counter-Clockwise Rotated PrintHexadecimal Decimal Related Information Select Character Set Values and Ranges Define User-Defined Character Set Select or Cancel Underline Mode Copy Character Set from ROM to RAM Cancel User-Defined CharacterESC 0 0 Select or Cancel Double Strike Select or Cancel Emphasized Mode Select Character Code Table Select or Cancel Italic Print Select or Cancel Upside-Down Print Mode Select or Cancel 90 Degree Clockwise Rotated PrintSelect International Character Set Select or Cancel Smoothing Mode Select Or Cancel White/Black Reverse Print Mode Summary of Rotated Printing Select Superscript or Subscript Modes Print Raster Graphics Graphics CommandsDownload 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 Ranges Define Downloaded Bit Image Convert 6 Dots/mm Bitmap to 8 Dots/mm Bitmap Print Downloaded Bit ImageHexadecimal 1D 2F m Decimal Value and Range of m Printer Status Commands Transmit Peripheral Device Status RS-232C printers only Request Alternate Status parallel printers only Hexadecimal Decimal Values Transmit Paper Sensor Status Hexadecimal 1D 49 n Decimal Transmit Printer ID Values of n Transmit Printer ID, Remote Diagnostics Extension Programming 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 Print Test Form Send Printer Software VersionAX t Rules for Using Real Time Commands Real Time Commands Moving Data through the Buffer Busy Line and Fault Conditions Recognizing Data from the Printer Real Time Request to Printer Related Information = Transmit Printer Status Real Time Status Transmission = Transmit RS-232C Busy Status = Transmit Error Status = Transmit Receipt Paper Status Hexadecimal Decimal Value of Byte Real Time Printer Status Transmission Select Printing Position of HRI Characters Bar Code CommandsSelect Pitch of HRI Characters Print Bar Code Select Bar Code Height UPC-A Select Bar Code Width Default Formulas Print and Return to Standard Mode Mode CommandsCancel Print Data in Page Mode Hexadecimal 0C Decimal Exceptions Select Page Mode Print Data in Page ModeHexadecimal 1B 0C Decimal Exceptions Hexadecimal 1B 4C Decimal Exceptions Ascii ESC S Select Standard Mode Default Exceptions Select Print Direction in Page Mode Set Print Area in Page Mode Select Character Size Set Absolute Vertical Print Position in Page Mode Set Relative Vertical Print Position in Page Mode Select or Cancel Macro Definition Macro CommandsHexadecimal 1D 3A Decimal Formulas Value of r Execute MacroValue of t Printer operation Flash Download Commands Return Boot Sector Firmware Part Number Switch to Flash Download ModeReturn Segment Number Status of Flash Memory ESC Select Flash Memory Sector to Download Return Boot Sector CRCGet Firmware CRC Range of n Exceptions Return Main Program Flash CRC Erase All Flash Contents Except Boot SectorErase Selected Flash Sector Ch * 256 + cl Ffff hexadecimal Download to Active Flash Sector March 127 Erase User Flash Sector Reset Firmware Basic Index 130 March March 131 132 March