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M-S Cash Drawer A794 Select Or Cancel White/Black Reverse Print Mode, Select or Cancel Smoothing Mode

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Chapter 6: Programming Information A794 Owner’s Guide

December 199990

Select Or Cancel White/Black Reverse Print Mode

ASCII GS B n

Hexadecimal 1D 42 n

Decimal 29 66 n

Value of n: 0 = Off

1 = On

(When 0 and 1 are the Least Significant Bit, LSB)

Range of n:0-255

Default: 0 (Off)

Turns on White/Black Reverse Print Mode. In White/Black Reverse Print Mode, print

dots and non-print dots are reversed, which means that white characters are printed on

a black background. When the White/Black Reverse Print Mode is selected it is also

applied to character spacing which is set by Right-Side Character Spacing (1B 20).

This command can be used with built-in characters and user-defined characters, but

does not affect the space between lines.

White/Black Reverse Print Mode does not affect bit image, downloaded bit image, bar

code, HRI characters, and spacing skipped by Horizontal Tab (09), Set Absolute Starting

Position (1B 24 …), and Set Relative Print Position (1B 5C).

White/Black Reverse Print Mode has a higher priority than Underline Mode. When

Underline Mode is on and White/Black Reverse Print Mode is selected, Underline

Mode is disabled, but not canceled.

Exceptions

Only the lowest bit of n is valid.

Related Information

In A793 Emulation, the command is unrecognized and the parameter byte is put into

the print buffer.

Select or Cancel Smoothing Mode

ASCII GS b n

Hexadecimal 1D 62 n

Decimal 29 98 n

This command is ignored.

Contents

Main December 1999 i Legal Notices December 1999ii Contents Page Chapter 1: About the Printer Description of Printer Models Available Model Identification A794 Model ID Key A 7 9 4 - X X X X Communication Interfaces Features Options Chapter 2: Using the Printer Unpack the Printer Remove the Starter Paper Roll Supports Choose a Location On a Flat Surface On a Wall Connect the Cables Communication Cable Cash Drawer Cables Power Supply Cable Printer Controls Page Loading Receipt Paper To Load the Paper: Page Page Configuring the Printer Page Troubleshooting the Printer Printer Tone and Green LED Printing Problems Printer Does Not Function Page Chapter 3: Media and Supplies Guide Ordering Thermal Paper Thermal Paper Specifications Manufacturers How to Order Ordering Miscellaneous Supplies Ordering Cash Drawers Ordering Power Supply and Power Cord Ordering Communication Cables Wall-Mount Kit Chapter 4: Print Specifications Characters Print Modes Size Standard Compressed Paper Specifications Print Zones Print Zones for 80 mm Paper Page Print Zones for 82.5 mm Paper Print Density and Density of Receipt Print Lines Duty Cycle Restrictions (Printing Solid Blocks) Allowable Duty Cycle (measured over one minute of continuous printing) Page Page Page Page Page Page Page Page Page Chapter 5: Communication Interface Communication Overview Interface Sending Commands Using DOS to Send Commands Using BASIC to Send Commands RS-232C Interface Print Speed and Timing XON/XOFF Protocol A794 Owners Guide Chapter 5: Communication Interface December 1999 45 DTR/DSR Protocol RS-232C Technical Specifications For more information about See these sections or documents Communication Connectors Power Connector Cash Drawer Connector RS-232C Settings Chapter 5: Communication Interface A794 Owners Guide December 199948 Parallel Interface IEEE Bi-directional Parallel Connector Chapter 6: Programming Information Command Conventions List of Commands and Location By Command Code Page Page Page By Function Printer Function Commands Vertical Positioning and Print Commands Horizontal Positioning Commands Print Characteristic Commands Graphics Commands Status Commands Barcode Commands Page Mode Commands Macro Commands User Data Storage Commands Flash Download Commands Comparisons Command Descriptions Printer Function Commands Clear Printer Perform Full Knife Cut Perform Partial Knife Cut Generate Tone Select Peripheral Device (for Multi-Drop) Initialize Printer Select Paper Sensors to Output Paper End Signals Select Sensors to Stop Printing Enable or Disable Panel Button Generate Pulse to Open Cash Drawer Select Cut Mode and Cut Paper Page Vertical Positioning and Print Commands Print and Feed One Line Activate Carriage Return Feed Print Lines Feed Dot Rows Add Extra Dot Rows Print Set Line Spacing to 1/6 Inch Set Line Spacing Print and Feed Paper Print and Feed Lines Set Horizontal and Vertical Minimum Motion Units Horizontal Positioning Commands Horizontal Tab Set Column Set Absolute Starting Position Set Horizontal Tab Positions Set Relative Print Position Select Justification Set Left Margin Set Printing Area Width Print Characteristics Commands Select Double-Wide Characters Select Single-Wide Characters Select 90 Degree Counter-Clockwise Rotated Print Select Pitch (Column Width) Set Right-Side Character Spacing Select Print Mode Select or Cancel User-Defined Character Set Define User-Defined Character Set Select or Cancel Underline Mode Copy Character Set from ROM to RAM Cancel User-Defined Character Select or Cancel Emphasized Mode Select or Cancel Double Strike Select or Cancel Italic Print Select International Character Set and Select Character Code Table Select or Cancel 90 Degree Clockwise Rotated Print Select or Cancel Upside Down Print Mode Select Character Size Page Select Or Cancel White/Black Reverse Print Mode Select or Cancel Smoothing Mode Select Superscript or Subscript Modes Summary of Rotated Printing A C C B Graphics Commands Print Raster Graphics Download BMP Logo Select Bit Image Mode A794 Owners Guide Chapter 6: Programming Information December 1999 95 Related Information Print Advanced Raster Graghics Select Single-Density Graphics Select Double-Density Graphics Select the Current Logo Define Downloaded Bit Image Print Downloaded Bit Image Convert 6 Dots/mm Bitmap to 8 Dots/mm Bitmap Status Commands Status Command Introduction Batch Mode Page Page Page Page | Page Page Page Real Time Commands Page Page Page Page Page Page Auto Status Back Page Page Page Bar Code Commands Select Printing Position of HRI Characters Select Pitch of HRI Characters Select Bar Code Height Print Bar Code Select Bar Code Width Page Mode Commands Print and Return to Standard Mode Cancel Print Data in Page Mode Print Data in Page Mode Select Page Mode Select Standard Mode Select Print Direction in Page Mode A D B 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 Definition Execute Macro User Data Storage Commands Write to User Data Storage Read from User Data Storage Read from Non-Volatile Memory Write to Non-Volatile Memory (NVRAM) Select Memory Type (SRAM/Flash) Where to Save Logos or User-Defined Fonts Flash Memory User Sectors Allocation Erase User Flash Sector Flash Download Commands Switch to Flash Download Mode Return Boot Sector Firmware Part Number Return Segment Number Status of Flash Memory Select Flash Memory Sector to Download Get Firmware CRC Return Microprocessor CRC Erase All Flash Contents Except Boot Sector Return Main Program Flash CRC Erase Selected Flash Sector Download to Active Flash Sector Reset Firmware A794 Owners Guide Index December 1999 139 Index 8 A B C D F I L M R S T U W