Request Alternate Status parallel printers only | Epson A794-D100

Chapter 6: Programming Information

A794 Owner’s Guide

Request Alternate Status (parallel printers only)

This command allows the printer to inform the host when the data in the buffer has been processed. When this command is sent to the printer, the printer goes “Busy” until all data which has been sent to the printer has been processed. The PAPER EXHAUST line shows the status for the cash drawer or receipt paper as shown in the table.

Status information is limited to what can be sent by the dedicated lines: BUSY, ACK, PAPER EXHAUST, and FAULT.

ASCII	ESC u n
Hexadecimal 1B 75 n
Decimal	27 117 n
Value and Range of n
Value of n	Function	Description
00	Drawer 1	High = Open
		Low = Closed or Not Present
01	Drawer 2	High = Open
		Low = Closed or Not Present
02	Paper Low (Not Implemented.	High = Paper Out
	Interpreted as Paper Out.)	Low = Paper Present
03	Paper Out (Default)	High = Paper Out
		Low = Paper Present
>03	Ignored, No Change	Printer Does Not Stay BUSY1

1PAPER EXHAUST LINE is valid to indicate previously requested status.

Transmit Peripheral Device Status (RS-232C printers only)

Transmits current status of the cash drawers on one byte. If a drawer is not connected, the status will indicate it is closed.

ASCII	ESC u 0
Hexadecimal	1B 75 0
Decimal	27 117 0

Value of returned byte

Bit	1 Signifies	0 Signifies
0	Drawer 1 & 2 Closed	Drawer 1 or 2 Open
1	Drawer 1 & 2 Closed	Drawer 1 or 2 Open

Bits 2-7 are not used.

88	March 1999

Image 94

Epson A794-D100 Request Alternate Status parallel printers only, Transmit Peripheral Device Status RS-232C printers only

Contents

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