Busy Line and Fault Conditions | M-S Cash Drawer A794 specification

Chapter 6: Programming Information

A794 Owner’s Guide

Busy Line and Fault Conditions

If the printer is in error condition (cover is open, paper is exhausted…), the printer will still accept data, respond to the batch mode status commands (1B 76 and 1B 75 0), handle the cash drawer commands, and not go busy until it actually tries to execute a print command. Then it will stay busy and stop processing data out of the receive buffer until the condition clears. It will respond to the Real Time commands as described below.

Real Time Status Transmission
	GS Sequence	DLE Sequence
ASCII	GS EOT n	DLE EOT n
Hexadecimal	1D 04 n	10 04 n
Decimal	29 4 n	16 4 n
Value of n:	GS/DLE Sequence

1 = Transmit printer status

2= Transmit RS-232C busy status

3= Transmit error status

4= Transmit receipt paper status

Transmits the selected one byte printer status specified by n in Real Time according to the following parameters. This command includes two sequences: GS (1D) and DLE (0x10).

Exceptions

The command is ignored if n is out of range.

An application using DLE (0x10) sequence must send EOT within 100 milliseconds of DLE or the printer will misinterpret the DLE and execute a Clear Printer command. Avoid this possibility by using the ID 04 n sequence, which is handled exactly the same as 10 04 n.

Unlike the A793, that had a dedicated connector and resultant dedicated status reporting for each cash drawer, the A794 has a single connector that shares data reporting from either cash drawer. When either cash drawer is open, an open status is reported by the printer.

Related Information

1 = Transmit Printer Status

Bit	Status	Hex	Decimal	Function
0	Off	00	0	Fixed to Off.
1	On	02	2	Fixed to On.
2	Off	00	0	One or both cash drawers open.
	On	04	4	Both cash drawers closed.
3	Off	00	0	Not busy at the RS-232C interface.
	On	08	8	Printer is Busy at the RS-232C
				interface.
4	On	10	16	Fixed to On.
5				Undefined.
6				Undefined.
7	Off	00	0	Fixed to Off.

112	December 1999

Image 117

M-S Cash Drawer A794 manual Busy Line and Fault Conditions, Real Time Status Transmission

Contents

Owners Guide Disclaimer Legal Notices Power Supply Contents Programming Information Communication Interface Features Options Description of Printer Models AvailableModel Identification Communication Interfaces Description of Printer Models Available Model IdentificationCommunication Interfaces Options Features Unpack the Printer Choose a LocationConnect the Cables Unpack the Printer A794 Thermal Receipt Printer Setup Guide Remove the Starter Paper Roll Supports Choose a Location Setting up the printerOn a Flat Surface On a Wall Communication Cable Connect the Cables Cash Drawer Cables Power Supply Cable Printer Controls Reset ButtonPaper Feed Button LED Tone To Load the Paper Loading Receipt Paper Using the Printer Paper jams Troubleshooting the Printer To start the test Configuring the Printer Poorly printed test printout Troubleshooting the Printer Printer Tone and Green LED Troubleshooting the Printer Changing this setting Printing ProblemsPrinter Does Not Function USE Caution when This page intentionally left blank Thermal Paper Specifications Manufacturers How to Order Ordering Thermal PaperOrdering Miscellaneous Supplies How to Order Thermal Paper SpecificationsOrdering Thermal Paper Manufacturers Ordering Power Supply and Power Cord Ordering Miscellaneous SuppliesOrdering Cash Drawers Wall-Mount Kit Ordering Communication Cables Characters Paper Specifications Print ZonesPrint Modes Size Print Zones for 80 mm Paper Print Zones for 82.5 mm Paper Print Modes CharactersSize Standard Paper Specifications Print ZonesPrint Zones for 80 mm Paper Print Specifications Print Zones for 82.5 mm Paper To change the Print Density Print Density and Density of Receipt Print Lines Duty Cycle Restrictions Printing Solid Blocks Code Character Sets Code Code Code Code Code Code Code Code Communication Overview Interface Sending CommandsRS-232C Interface Parallel Interface Using DOS to Send Commands Sending CommandsUsing Basic to Send Commands Communication Overview Print Speed and Timing RS-232C Interface XON/XOFF Protocol Communication Connectors RS-232C Technical SpecificationsPin DB-9 Connector Pin DB-25 Connector DTR/DSR Protocol Cash Drawer Connector Power Connector XON/XOFF, DTR/DSR RS-232C Settings Parallel Interface Ieee Bi-directional Parallel Connector Command Conventions List of Commands and Locations Comparisons Command DescriptionsBy Command Code By Function Ascii Command Conventions By Command Code List of Commands and Location 1B 49 n Select or Cancel Italic Print 1B 2D n Select or Cancel Underline Mode1B 4C Select Page Mode 1B 54 n Select Print Direction in Page Mode 1D 42 n Select or Cancel White/Black Reverse Print Mode 1D 3A Select or Cancel Macro Definition1D 21 n Select Character Size 1D 22 55 n1 n2 Flash Memory User Sectors Allocation 04 n Convert 6 Dots/mm Bitmap to 8 Dots/mm Bitmap Print Bar Code05 n Select Superscript or Subscript Modes Print Test Form Vertical Positioning and Print Commands Printer Function CommandsBy Function Perform Partial Knife Cut Print Characteristic Commands Horizontal Positioning Commands1B 74 n Select International Character Set 1F 05 n Select Superscript or Subscript Modes Graphics Commands Status Commands1F 04 n Convert 6 Dots/mm Bitmap to 8 Dots/mm 100 Mode Commands Barcode CommandsMacro Commands User Data Storage Commands Flash Download Commands 24 n1 n2 Comparisons Printer Function Commands Command DescriptionsClear Printer Perform Full Knife Cut Generate Tone Perform Partial Knife CutSelect Peripheral Device for Multi-Drop Ascii ESC BEL Initialize Printer Hexadecimal Decimal Default Select Paper Sensors to Output Paper End Signals Default of nRange of n Select Sensors to Stop Printing Enable or Disable Panel Button Generate Pulse to Open Cash Drawer Select Cut Mode and Cut PaperValue of p1 Value of p2 AX t Print Test Form Print and Feed One Line Vertical Positioning and Print CommandsActivate Carriage Return Feed n Print Lines Range of n Default Feed n Dot RowsAdd n Extra Dot Rows Set Line Spacing to 1/6 Inch PrintSet Line Spacing Ascii ETB Print and Feed n Lines Print and Feed PaperSet Horizontal and Vertical Minimum Motion Units GS P x y Horizontal Tab Horizontal Positioning CommandsSet Column Ascii HT Compatibility Information A794 receipt vs. A793 receipt Set Absolute Starting Position Set Horizontal Tab Positions Value of k Default To move to the left Set Relative Print Position Select Justification GS L nL nH Set Left Margin Set Printing Area Width Select Double-Wide Characters Print Characteristics CommandsSelect Single-Wide Characters Ascii DC2 Select 90 Degree Counter-Clockwise Rotated Print Select Pitch Column WidthAscii ESC DC2 Set Right-Side Character Spacing Select Print Mode Define User-Defined Character Set Select or Cancel User-Defined Character SetException Values and Ranges Select or Cancel Underline Mode Copy Character Set from ROM to RAM Cancel User-Defined CharacterESC 0 0 ESC ? n Select or Cancel Double Strike Select or Cancel Emphasized Mode Select or Cancel Italic Print Select or Cancel 90 Degree Clockwise Rotated Print Select or Cancel Upside Down Print ModeSelect Character Size Normal 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 Commands Download BMP Logo Select Bit Image Mode Dot Single-Density Mode Select Single-Density Graphics Print Advanced Raster GraghicsValue of r Data bytes Select Double-Density Graphics Select the Current Logo 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 Status Commands Status Command IntroductionBatch Mode ESC u Transmit Peripheral Device Status RS-232C printers onlyHexadecimal 1B 75 Decimal 27 117 Value of returned byte Hexadecimal 1B 75 n Decimal Hexadecimal Decimal Values Transmit Paper Sensor Status Transmit Printer ID Values of n Transmit Printer ID, Remote Diagnostics Extension Programming Information A794 Owner’s Guide December 107 Undefined. Fixed to off Send Printer Software Version Real Time Commands Preferred ImplementationAlternate Implementation Moving Data through the Buffer Rules for Using Real Time Commands Busy Line and Fault Conditions Real Time Status TransmissionRelated Information = Transmit Printer Status = Transmit RS-232C Busy Status = Transmit Error Status = Transmit Receipt Paper Status Real Time Request to Printer Real Time Printer Status Transmission Ascii GS ENQValue of Byte Auto Status Back Select or Cancel Automatic Status Back ASB 118 December December 119 Recognizing Data from the Printer Select Printing Position of HRI Characters Bar Code CommandsSelect Pitch of HRI Characters Select Bar Code Height GS k m n d1…dn 1D 6B m n d1…dn 29 107 m n d1…dn Print Bar Code CODE39 Select Bar Code Width Print and Return to Standard Mode Mode CommandsCancel Print Data in Page Mode Ascii FF Select Page Mode Print Data in Page ModeAscii ESC FF Ascii ESC L Select Standard Mode Select Print Direction in Page ModeAscii ESC S N1-4 = N5 = N6 = N7 = N8 = Set Print Area in Page Mode Set Absolute Vertical Print Position in Page Mode Set Relative Vertical Print Position in Page Mode Macro Commands Select or Cancel Macro DefinitionHexadecimal 1D 3A Decimal Value of t Execute Macro Write to User Data Storage User Data Storage CommandsRead from User Data Storage Read from Non-Volatile Memory December 133 Flash Memory User Sectors Allocation Erase User Flash SectorGS U n1 n Switch to Flash Download Mode Flash Download CommandsPrinter operation ESC Return Segment Number Status of Flash Memory Return Boot Sector Firmware Part NumberSelect Flash Memory Sector to Download Get Firmware CRC Return Microprocessor CRC Erase All Flash Contents Except Boot SectorReturn Main Program Flash CRC Erase Selected Flash Sector Download to Active Flash Sector Reset FirmwareAscii GS Space 1D FF Basic Index DOS December 141