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Epson A794-D100 manual Erase All Flash Contents Except Boot Sector, Return Main Program Flash CRC

Models: A794-D100

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A794 Owner’s Guide

Chapter 6: Programming Information

Erase All Flash Contents Except Boot Sector

Causes the entire flash memory to be erased.

The printer returns ACK if the command is successful; NAK if it is unsuccessful.

ASCII	GS SO
Hexadecimal	1D 0E
Decimal	29 14

Exceptions

Available only in download mode.

Return Main Program Flash CRC

Returns the CRC calculated over the flash firmware code space. The format of the response is ACK <low byte> <high byte>.

ASCII	GS SI
Hexadecimal	1D 0F
Decimal	29 15

Erase Selected Flash Sector

Erases the previously selected sector. The printer transmits ACK when the sector has been erased. If the previous sector is not successfully erased, or if no sector was selected, the printer transmits NAK.

ASCII	GS DLE n
Hexadecimal	1D 10 n
Decimal	29 16 n

Value and Range of n 0-2 =	256k bytes Flash
0-14 =	1M bytes Flash
0-30 =	2M bytes Flash

Exceptions

Available only in download mode.

March 1999

125

Image 131

Epson A794-D100 Erase All Flash Contents Except Boot Sector, Return Main Program Flash CRC, Erase Selected Flash Sector

Contents

Owners Guide Page Disclaimer Legal NoticesPower Supply Contents Programming Information Communication InterfaceDescription of Printer Models Available InstallationsFeatures Options Description of Printer Communication Interfaces Models AvailableModel Identification Setting up the printer InstallationsOn a Flat Surface Vertically see note FeaturesOptions Printer Controls Changing Paper Testing the Printer Using 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 Printer Tone and Green LED Troubleshooting the PrinterPrinter Does Not Work Printing ProblemsOrdering Miscellaneous Supplies Ordering Thermal PaperManufacturers Thermal Paper SpecificationsHow to Order Ordering Thermal PaperOrdering Cash Drawers Ordering Power Supply and Power CordOrdering Miscellaneous Supplies Wall-Mount Kit Ordering Communication CablesCharacter Sets Paper Specifications Print ZonesCharacters Standard CharactersPrint Modes SizePrint Zones for 80 mm Paper Paper SpecificationsPrint Zones Print Zones for 82.5 mm Paper Code Character SetsCode Code Code Code Code Code Code RS-232C Interface Communication OverviewCommunication Overview Sending CommandsUsing DOS to Send Commands Using Basic to Send CommandsPrint Speed and Timing RS-232C InterfaceDTR/DSR Protocol XON/XOFF ProtocolPin DB-9 Connector Pin DB-25 Connector RS-232C Technical SpecificationsCommunication Connectors Power ConnectorRS-232C Settings Cash Drawer ConnectorParallel Interface Ieee Bi-directional Parallel ConnectorCommunication Interface Programming Information List of Commands Comparisons Command DescriptionsProgramming Information List of Commands26 s c1 c2 n1 d1...nn dn NL nH 1D 2A n1 n2 d1...dn ComparisonsCommand Conventions Command DescriptionsHexadecimal Decimal Exceptions Printer Function CommandsClear Printer Perform Full Knife CutDecimal Formulas Perform Partial Knife CutGenerate Tone HexadecimalValue of n Select Print ModeInitialize Printer Hexadecimal Decimal DefaultSelect Peripheral Device for Multi-Drop Range of n Select Paper Sensors to Output Paper End SignalsDefault of n Exceptions Select Sensors to Stop Printing Enable or Disable Panel ButtonValue of p1 Read from Non-Volatile MemoryGenerate Pulse to Open Cash Drawer Range of kValue of n2 Select Cut Mode and Cut PaperWrite to Non-Volatile Memory Nvram Value of n1Feed n Print Lines Vertical Positioning and Print CommandsPrint and Feed One Line Activate Carriage ReturnAdd n Extra Dot Rows Range of n DefaultFeed n Dot Rows Set Line Spacing to 1/6 Inch PrintSet Column Print and Feed Paper Set Line SpacingPrint and Feed n Lines Set Right-Side Character Spacing Horizontal Positioning CommandsHorizontal Tab Set Absolute Starting Position Set Horizontal Tab Positions Value of k DefaultSet Relative Print Position Compatibility Information A794 receipt vs. A793 receipt Select JustificationRange of nH Set Left MarginRange of nL GS P x y Set Horizontal and Vertical Minimum Motion UnitsSet 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 Values and Ranges Define User-Defined Character SetSelect or Cancel Underline Mode ESC 0 0 Cancel User-Defined CharacterCopy Character Set from ROM to RAM Select or Cancel Double Strike Select or Cancel Emphasized ModeSelect Character Code Table Select or Cancel Italic PrintSelect International Character Set Select or Cancel 90 Degree Clockwise Rotated PrintSelect or Cancel Upside-Down Print Mode Select or Cancel Smoothing Mode Select Or Cancel White/Black Reverse Print ModeSummary of Rotated Printing Select Superscript or Subscript ModesHexadecimal Decimal Value Graphics CommandsPrint Raster Graphics Download BMP Logo= 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 ImageValue and Range of m Print Downloaded Bit ImageConvert 6 Dots/mm Bitmap to 8 Dots/mm Bitmap Hexadecimal 1D 2F m DecimalPrinter Status Commands Transmit Peripheral Device Status RS-232C printers only Request Alternate Status parallel printers onlyHexadecimal Decimal Values Transmit Paper Sensor StatusHexadecimal 1D 49 n Decimal Transmit Printer IDValues of n Transmit Printer ID, Remote Diagnostics ExtensionProgramming 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 Rules for Using Real Time Commands Real Time CommandsMoving Data through the Buffer Busy Line and Fault ConditionsRecognizing 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 TransmissionSelect Pitch of HRI Characters Bar Code CommandsSelect Printing Position of HRI Characters Print Bar Code Select Bar Code HeightUPC-A Select Bar Code Width Default FormulasHexadecimal 0C Decimal Exceptions Mode CommandsPrint and Return to Standard Mode Cancel Print Data in Page ModeHexadecimal 1B 4C Decimal Exceptions Print Data in Page ModeSelect Page Mode Hexadecimal 1B 0C Decimal ExceptionsAscii ESC S Select Standard ModeDefault Exceptions Select Print Direction in Page ModeSet 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 Printer operation Flash Download CommandsESC Switch to Flash Download ModeReturn Boot Sector Firmware Part Number Return Segment Number Status of Flash MemoryRange of n Exceptions Return Boot Sector CRCSelect Flash Memory Sector to Download Get Firmware CRCErase Selected Flash Sector Erase All Flash Contents Except Boot SectorReturn Main Program Flash CRC Ch * 256 + cl Ffff hexadecimal Download to Active Flash SectorMarch 127 Erase User Flash Sector Reset FirmwareBasic Index130 March March 131 132 March