Axiohm A795 User manual

A795-D100PS
UserGuide
ProgrammingSupplement
A795Two-ColorThermalReceiptPrinter
TM

Federal Communications Commission (FCC) Radio Frequency Interference Statement Warning
Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user’s authority
tooperatetheequipment.
Note
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC
Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a
commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a
residential area is likely to cause harmful interference in which case the user will be required to correct the interference athis own
expense.
Information to the User
This equipment must be installed and used in strict accordance with the manufacturer’s instructions. However, there is no guarantee
that interference to radio communications will not occur in a particular commercial installation. If this equipment does cause
interference, which can be determined by turning the equipment off and on, the user is encouraged to contact Axiohm immediately.
The Axiohm company is not responsible for any radio or television interference caused by unauthorized modification of this
equipment or the substitution or attachment of connecting cables and equipment other than those specified by Axiohm. The
correction of interferences caused by such unauthorized modification, substitution or attachment will be the responsibility of
theuser.
In order to ensure compliance with the Product Safety, FCC and CE marking requirements, you must use the power supply,
power cord, and interface cable which are sold for use with this product or which meet the following parameters:
Power Supply
UL Listed (QQGQ), Class 2 power supply with SELV (Secondary Extra Low Voltage), non-energy hazard output, limited energy
source, input rated 100-240 Vac, 1.5/0.8 A, 50/60 Hz, output rated 24 Vdc, 2.3 A.
Use of this product with a power supply other than the Axiohm power supply will require you to test the power supply and Axiohm
printer for FCC and CE mark certification.
Communication Interface Cable
A shielded (360 degree) interface cable must be used with this product. The shield must be connected to the frame or earth ground
connection or earth ground reference at EACH end of the cable.
Use of a cable other than described here will require that you test the cable with the Axiohm printer and your system for FCC
and CE mark certification.
Power Cord
A UL listed, detachable power cord must be used. For applications where the power supply module may be mounted on the floor, a
power cord with Type SJT marking must be used. For applications outside the US, power cords which meet the particular country’s
certificationand applicationrequirements shouldbe used.
Use of a power cord other than described here may result in a violation of safety certifications which are in force in the country
ofuse.
Industry Canada (IC) Radio Frequency Interference Statement
ThisClass A digital apparatus meets all requirements of theCanadian Interference-CausingEquipment Regulations.
Cet appareil numérique de la classe A respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.
Voluntary Control Council for Interference (VCCI) Radio Frequency Interference Statement
This is a Class A product based on the standard of the Voluntary Control Council for Interference by Information Technology
Equipment (VCCI). If this equipment is used in a domestic environment, radio disturbance may arise. When such trouble occurs, the
user may be required to take corrective actions.
Disclaimer
Information in this document is subject to change without notice. Consult your Axiohm sales representative for information that is
applicable and current. Axiohm reserves the right to improve products as new technology, components, software, and firmware
becomeavailable.
No part of this document may be reproduced or transmitted in any form or by any means, electronic or mechanical, for any purpose
without the express written permission of Axiohm.
Copyright
Copyright © 2001 by AXIOHM
950 Danby Road, Ithaca, New York 14850, USA. All rights reserved. Printed in USA. Confidential, Unpublished. Property of
AXIOHM.
Trademarks
AXIOHM™ and ColorPOS™ are trademarks of AXIOHM ATSI and its subsidiaries.
Microsoft, Windows NT are registered Trademarks of Microsoft Corporation in the U.S.A. and/or other countries.
Inside Out Networks, Inside Out, EPIC, and Edgeport are trademarks of Inside Out Networks.
All other trademarks and registered trademarks are the property of their respective holders.
Patents:
PatentsPending
Web Site
http://www.axiohm.com

A795 User Guide:Programming Supplement
Contents 3
Contents
Chapter 1:About this Supplement.....................................................................9
How to use this supplement ...............................................................................9
Where to find the basics .......................................................................................9
Where to find advanced technical information........................................9
Support ................................................................................................9
Chapter 2:Diagnostics and Configuration .................................................. 11
Startup Diagnostics ............................................................................................. 11
Runtime diagnostics............................................................................................ 12
Remote diagnostics ............................................................................................. 12
Indicators .................................................................................................................. 14
Printer configuration .......................................................................................... 15
Configuring the printer ......................................................................................... 16
Communicationinterface .................................................................................... 17
RS-232Cserial interfacesettings ....................................................................... 17
Printeremulations................................................................................................... 18
Printersettingsandfunctions ............................................................................ 19
Enableordisabledatascope mode ................................................................. 20
Printheadresistance............................................................................................... 20
Chapter 3:Programming the Printer.............................................................. 21
Overview of commands..................................................................................... 21
Comparison to A793............................................................................................ 21
Two-color commands (comparision A794 to A795)............................. 22
Character appearance ........................................................................................ 23
Widthspecifications ............................................................................................... 23
Standard ............................................................................................................... 23
Compressed ........................................................................................................ 23
Print zones................................................................................................................ 24
Print zones for 80-mm paper .............................................................................. 24
Print zones for 82.5-mm paper........................................................................... 25
Rotated printing commands ........................................................................... 25
Emulation modes .................................................................................................. 26
Print setup in emulation modes ........................................................................ 26

A795 User Guide:Programming Supplement
Contents
4
Chapter 4:Programming Commands ............................................................ 27
Commands listed by function......................................................................... 27
Printeractions........................................................................................................... 27
Print and paper feed .............................................................................................. 28
Verticalandhorizontalpositioning .................................................................. 28
Textcharacteristics.................................................................................................. 29
Graphics ...................................................................................................................... 30
Status ........................................................................................................................... 31
Batchmode ......................................................................................................... 31
Real time............................................................................................................... 31
Unsolicited statusmode ................................................................................. 31
Barcodes .................................................................................................................... 32
Page mode................................................................................................................. 33
Macros ......................................................................................................................... 33
Userdatastorage .................................................................................................... 34
Flashdownload.................................................................................................. 34
Commandconventions ...................................................................................... 35
Command descriptions...................................................................................... 36
Printeractions........................................................................................................... 36
Clear printer......................................................................................................... 36
Perform full knife cut ....................................................................................... 36
Perform partialknife cut................................................................................. 37
Generate tone..................................................................................................... 37
Selectperipheral device(formulti-drop) ................................................. 37
Initialize printer .................................................................................................. 37
Selectpapersensorstooutputpaperendsignals ............................... 38
Selectsensorstostopprinting..................................................................... 38
Enable or disable panel button.................................................................... 39
Generate pulse to open cash drawer......................................................... 39
Set currentcolor ................................................................................................ 40
Select cut mode and cut paper.................................................................... 40
Set papertype (ColorPOS™) ......................................................................... 41
Printtestform..................................................................................................... 42
Print and paper feed .............................................................................................. 43
Print and feed paper one line....................................................................... 43
Print and carriage return ................................................................................ 43
Feed n dot rows ................................................................................................. 43
Feed n print lines............................................................................................... 43
Add n extra dot rows ....................................................................................... 44
Print ........................................................................................................................ 44
Print and feed paper ........................................................................................ 45
Print and feed n lines ....................................................................................... 45

A795 User Guide:Programming Supplement
Contents 5
Verticalandhorizontalpositioning .................................................................. 46
Horizontaltab..................................................................................................... 46
Set horizontalandvertical minimum motion units ............................. 46
Set column........................................................................................................... 46
Setabsolutestartingposition ...................................................................... 47
Set verticallinespacingto1/6inch ........................................................... 47
Set vertical line spacing .................................................................................. 48
Set horizontaltab positions .......................................................................... 48
Set relativeprint position............................................................................... 49
Selectjustification............................................................................................. 50
Set left margin .................................................................................................... 50
Set printingareawidth ................................................................................... 51
Text characteristicscommands .......................................................................... 52
Selectdouble-widecharacters..................................................................... 52
Select single-widecharacters ....................................................................... 52
Select90-degreecounter-clockwise rotatedprint............................... 52
Selectpitch(column width) .......................................................................... 53
Set right-sidecharacter spacing.................................................................. 53
Select print mode.............................................................................................. 54
Select or cancel user-defined character set ............................................ 54
Define user-defined character set .............................................................. 55
Select or cancel underline mode ................................................................ 55
Copycharacter setfrom ROMtoRAM....................................................... 56
Cancel user-defined character ..................................................................... 56
Select or cancel emphasized mode ........................................................... 56
Selectorcanceldoublestrike....................................................................... 57
Selectorcancel italic print............................................................................. 57
Selectinternational character code ........................................................... 58
Selectorcancel90degreeclockwise rotatedprint ............................. 58
Selectinternational character set ............................................................... 59
Select or cancel upside down print mode............................................... 59
Selectcharactersize......................................................................................... 60
Selectorcancelwhite/blackreverseprint mode(ColorPOS™) ....... 61
Select or cancel smoothing mode .............................................................. 61
Reverse colortext mode (ColorPOS™) ...................................................... 61
Text strike-throughmode (ColorPOS™) ................................................... 62
Selectsuperscript orsubscript modes ...................................................... 62

A795 User Guide:Programming Supplement
Contents
6
Graphics ...................................................................................................................... 63
DownloadBMPlogo ........................................................................................ 63
Selectbitimagemode .................................................................................... 64
Printadvancedraster graphics..................................................................... 65
Selectsingle-densitygraphics...................................................................... 65
Selectdouble-density graphics ................................................................... 66
Selectthecurrentlogo(ColorPOS™)......................................................... 66
Definedownloadedbitimage(ColorPOS™)........................................... 67
Printdownloaded bitimage(ColorPOS™) .............................................. 68
Printraster monochromegraphics (ColorPOS™) .................................. 68
Printrastercolorgraphics(ColorPOS™).................................................... 69
Downloadlogoimage(ColorPOS™) .......................................................... 69
Applyshadingto logo (ColorPOS™) ......................................................... 70
Merge watermark mode (ColorPOS™) ...................................................... 70
Monochrome shademode(ColorPOS™) ................................................. 71
Colorshade mode(ColorPOS™) .................................................................. 71
Logoprint withcolorplaneswap(ColorPOS™)..................................... 71
Form and mergerealtimesurroundgraphic(ColorPOS™) .............. 72
Savegraphics bufferaslogo(ColorPOS™) .............................................. 72
Backgroundlogo printmode (ColorPOS™) ............................................ 73
Convert 6 dots/mm bitmap to8dots/mmbitmap .............................. 73
Status ........................................................................................................................... 74
Status commandintroduction ..................................................................... 74
Batchmode ......................................................................................................... 74
Transmitperipheraldevice status (RS-232C printersonly)................ 75
Request alternatestatus(A793emulationonly) ................................... 75
Transmitpaper sensorstatus........................................................................ 76
Transmit printer ID............................................................................................ 77
Transmitprinter ID,remotediagnosticsextension............................... 78
Transmitstatus ................................................................................................... 80
Send printer software version ...................................................................... 82
Real timecommands ............................................................................................. 82
Preferred implementation ............................................................................. 82
Alternateimplementation ............................................................................. 82
Rules for using real time commands.......................................................... 83
Moving data through the buffer ................................................................. 83
Busylineandfaultconditions ...................................................................... 83
Realtimestatus transmission ....................................................................... 84
Real time request to printer .......................................................................... 85
Realtimeprinterstatus transmission ........................................................ 86
Unsolicitedstatusmode ....................................................................................... 87
Selectorcancelunsolicited statusmode(USM).................................... 87
Recognizing data from the printer ............................................................. 89

A795 User Guide:Programming Supplement
Contents 7
Barcodes .................................................................................................................... 90
SelectprintingpositionofHRI characters ............................................... 90
SelectpitchofHRIcharacters....................................................................... 90
Select bar code height .................................................................................... 90
Printbarcode ..................................................................................................... 91
Select PDF 417 parameters ........................................................................... 93
Selectbarcodewidth...................................................................................... 94
Page mode................................................................................................................. 95
Print and return to standard mode ............................................................ 95
Cancel print data in page mode .................................................................. 95
Print data in page mode................................................................................. 95
Select page mode ............................................................................................. 96
Select standard mode ..................................................................................... 96
Select print direction in page mode .......................................................... 97
Set print area in page mode ......................................................................... 98
Set absolutevertical printpositioninpagemode ............................... 99
Set relativevertical print position inpagemode.................................. 99
Macros .......................................................................................................................100
Selectorcancelmacrodefinition..............................................................100
Execute macro ..................................................................................................100
Userdatastorage ..................................................................................................101
Writeto user data storage............................................................................101
Read from user data storage.......................................................................101
Read fromnon-volatilememory ...............................................................101
Writeto non-volatilememory (NVRAM).................................................101
Select memory type (SRAM/flash) ............................................................102
Flashmemory usersectorsallocation .....................................................102
Eraseuserflashsector ...................................................................................103
Userstoragestatus(ColorPOS™)...............................................................104
Flashdownload......................................................................................................105
Switchtoflashdownloadmode................................................................105
Return boot sector firmwarepartnumber............................................106
Return segment number status of flash memory...............................106
Selectflashmemory sector todownload ..............................................106
Get firmware CRC ............................................................................................106
Return microprocessor CRC ........................................................................107
Eraseallflash contentsexceptbootsector ...........................................107
Return main program flash CRC ................................................................107
Erase selected flash sector ...........................................................................107
Downloadtoactiveflashsector ................................................................108
Downloadpapertypedescription(ColorPOS™).................................108
Return papertypedescription(ColorPOS™) ........................................109
Reset firmware .................................................................................................109

A795 User Guide:Programming Supplement
Contents
8
AppendixA:
Commands listed by hexadecimal code .....................................................111
By command code ..............................................................................................111
AppendixB:
Resident Character Sets......................................................................................117
Character sets .......................................................................................................117
Code page 437 (US)..............................................................................................117
Code page 737 (Greek)........................................................................................118
Code page 850 (Multilingual) ...........................................................................119
Code page 852 (Slavic) ........................................................................................120
Code page 858 (with Eurosymbol) .................................................................121
Code page 860 (Portuguese) ............................................................................122
Code page 862 (Hebrew) ...................................................................................123
Code page 863 (French Canadian)..................................................................124
Code page 865 (Nordic) ......................................................................................125
Codepage866(Cyrillic) ......................................................................................126
Code page 1252 (Windows Latin 1) ...............................................................127

A795 User Guide:Programming Supplement
Chapter 1:About this Supplement 9
Chapter1:AboutthisSupplement
Howtousethissupplement
This is a supplemental guide providing programming information on Axiohm’s A795 printer.
It is written for tech-savvy users who are interested in customizing or adjusting printer
functionality and is meant to be used in conjunction with the A795 ColorPOS™
Two-Color Thermal Receipt Printer: User Guide.
If you experience any difficulties during the programming process or feel unsure of
adjustments you have made, contact your Axiohm representative for further assistance.
Wheretofindthebasics
If you are looking for information on set-up or basic operation, refer to the A795 ColorPOS™
User Guide. This supplemental guide assumes that you have the A795 ColorPOS™ User Guide
handy for reference or are already familiar with the printer.
Wheretofindadvancedtechnicalinformation
This guide contains the most complete information available on programming the printer. If you
cannot find what you need here or would like further guidance on how to program the printer,
contact an Axiohm representative for assistance.
If you are having problems with the physical operation of the printer, the A795 ColorPOS™
Service Guide, provides in-depth information on diagnostics and service. The A795 ColorPOS™
Service Guide is available
to qualified service technicians who have been certified by Axiohm to perform advanced
procedures.
Support
For more advanced procedures and troubleshooting, you may need to refer to the printer’s service
guide or speak to an Axiohm technical professional. Your representative is able to provide you
with necessary information.
For on-line service, refer to the web site at www.Axiohm.com or e-mail to: [email protected].

A795 User Guide:Programming Supplement
Chapter 1:About this Supplement
10

A795 User Guide:Programming Supplement
Chapter 2:Diagnostics and Configuration 11
Chapter2:DiagnosticsandConfiguration
The A795 printer performs a number of diagnostics which provide useful information about the operating status of the
printer. The following diagnostic tests are available. See the sections that follow for more information.
• Startup diagnostics
Performed during the printer’s startup cycle.
• Runtime diagnostics
Performed during normal printer operation.
• Remote diagnostics
Maintained during normal operation and reported in the
print test.
The printer can be configured with the following settings
and functions through the configuration menu that is
printed on the receipt. For more information on configuing
the printer, see the “Printer Configuration” section which
follows in this chapter.
• Communication interfaces
• RS-232C settings
• Printer emulations
• Printhead resistance
• Datascope mode
StartupDiagnostics
When the printer receives power or performs a hardware reset, it automatically performs the
startup diagnostics (also known as level 0 diagnostics) during the startup cycle. The following
diagnostics are performed:
• Turn off motors
• Perform boot CRC check of the firmware ROM, test
external SRAM, test EEPROM, and test main program
CRC
Failure causes Startup Diagnostics to stop; the printer
beeps and the LED flashes a set number of times,
indicating the nature of the failure. The table in the
“Indicators” section later in this chapter describes the
specific tone and LED sequences.
• Check if paper is present
• Return the knife to the home position
Failure causes a fault condition. The table in the
“Indicators” section later in this chapter describes the
specific tone and LED sequences.
• Check if receipt cover is closed
Failure does not interrupt the startup cycle.
When the startup diagnostics are complete, the printer
makes a two-tone beep (low then high frequency), the
paper feed button is enabled and the printer is ready for
normal operation.
If the printer has not been turned on before, or a new
EEPROM has been installed, the default values for the
printer functions will be loaded into the EEPROM
during startup diagnostics.

A795 User Guide:Programming Supplement
Chapter 2:Diagnostics and Configuration
12
Runtimediagnostics
Runtime diagnostics (sometimes called level 2 diagnostics) run during normal printer operation.
When the following conditions occur, the printer automatically turns off the appropriate motors
and disables printing to prevent damage to the printer:
• Paper out
• Receipt cover open
• Knife unable to home
• Printhead too hot
• Voltages out of range
The LED on the operator panel will signal when these
conditions occur as well as indicate what state or mode the
printer is in.
Remotediagnostics
Remote diagnostics (sometimes called level 3 diagnostics) keeps track of the following tallies and
prints them on the receipt during the print test. See the sample test printout on the next page. These
tallies can be used to determine the printer’s state of health.
• Model number
• Serial number
• CRC number
• Number of lines printed
• Number of knife cuts
• Number of hours the printer has been on
• Number of flash cycles
• Number of cutter jams
• Number of times the cover is opened
• Maximum temperature reached
(See tallies note on the following page.)

A795 User Guide:Programming Supplement
Chapter 2:Diagnostics and Configuration 13
*** A795 - Diagnostics Form ****** A795 - Diagnostics Form ***
Model number : A795-2119
Serial number : A014905324
Boot Firmware
Revision : V3.07
CRC : DF0D
P/N : 189-1075274A
Flash Firmware
Revision : V3.08
CRC : ACE2
P/N : 189-1075274A
H/W parameters
Flash Memory Size : 1 Mbyte
Flash Logos/Fonts : 384 kbytes
Flash User Storage : 0 kbytes
SRAM : 256 kbytes
Head Setting : D
Paper Type : Kanzaki Red P-310RB
Paper Type Header : 1.0aD
Print Density (Mono) : 100 %
Max Speed : 100 mm/sec
Paper Width : 80 mm
Max Power : 55 W
Knife : Enabled
Partial Cut : 155 steps
Paper Low Sensor : Enabled
Comm. Interface
RX Buffer Size : 4096
Interface type : RS232/USB
Parameters
Baud Rate : 115200
Data Bits : 8
Stop Bit : 1
Parity : NONE
Flow Control : DTR/DSR
Reception Errors : Ignore
Alternate DTR/DSR : Disabled
Resident Code Pages : 437, 850, 852, 858
860, 863, 865, 866
1252, 862, 737
Available Paper Types : 0.0aD 1.0aD 5.0aD
To enter Printer Config Menu :
1) Flip DIP switch #1 down
2) Reset the printer, while holding
the Paper Feed button down
****************** MAIN MENUMAIN MENU ********************
**************************************************************
Select a sub-menu :
- EXIT -> 1 click
- Print Current Configuration -> 2 clicks
- Set Communication Interface -> 3 clicks
- Set Diagnostics Modes -> 4 clicks
- Set Emulation/Software Options -> 5 clicks
- Set Hardware Options -> 9 clicks
Enter code, than hold Button DOWN
at least 1 second to validate
}
Current Printer tallies are
printed after the Diagnostic
information and will vary
per printer use.
For more information about See this section
Accessing the remote diagnostic tallies “Command descriptions” in Chapter4:ProgrammingCommands
(Statuscommands:TransmitprinterID, remotediagnostics extension,
Hexadecimal1D 49 40n)
Print test and configuration menu samples will vary per model or printer
configuration. (Shown approximately 60% of size.)

A795 User Guide:Programming Supplement
Chapter 2:Diagnostics and Configuration
14
Indicators
The printer communicates various conditions both visually, with the green LED or audibly, with a
series of tones or beeps. The following table lists these indicators.
Indicator Sequence Condition
LED Continuous,flashing quickly Paperout
Cover off
Knife unable to home
LED Continuous,flashing slowly Paper is low
(if paper low sensor is installed)
Printhead too hot
Voltages out of range
Tone Two-tone beep Startup diagnostics completed successfully
(low frequency,high frequency)
LED Single beep Boot CRC test failure
andTone Single LED flash
LED Double beep SRAM test failure
andTone Double LED flash
LED Triple beep EEPROM test failure
andTone Triple LED flash
LED Four beeps Dynamic memory initialization failure
andTone Four LED flash
LED Two-Tone beep Main program CRC test failure
andTone (high frequency,low frequency) Or
Continuous flashingof LED DIP switch is in on position indicating
flashdownloadmode
For more information about See this section
Error conditions and “Troubleshooting the
correcting them printer”in Chapter 4:Using
thrPrinter,in the A795 User
Guide
The printer is also able to communicate its status to the
host application if the application has been programmed to
receive this information.
For more information about See this section
Communication of printer “Commanddescriptions”
status to host application in Chapter 4:Programming
(commands section)

A795 User Guide:Programming Supplement
Chapter 2:Diagnostics and Configuration 15
Printerconfiguration
Printers are shipped with all the functions and parameters pre-set at the factory. Settings for
various printer parameters can be changed. This menu is printed on the receipt and scrolls through
instructions for selecting and changing any of the functions or parameters.
Caution: Be extremely careful changing any of the printer settings to avoid inadvertently
changing other settings that might affect the performance of the printer.
The following functions and parameters can be changed in
the scrolling configuration menu (except as noted):
• Communication Interface
• RS-232C seral interface (9-pin)
• RS-232C serial interface (25-pin)
• Universal serial bus (USB)
• RS-232C serial interface settings
• Baud rate
• Data bits (can not be changed)
• Stop bits (can not be changed)
• Parity (can not be changed)
• Hardware (DTR/DSR) or software (XON/XOFF)
flow control
• Data reception errors
• Printer Emulations
• A795 native mode
• A794 emulation
• Axiohm A793
• Epson TM-T88
• Printer settings and functions
• Default lines per inch
• Carriage return usage
• Data scope mode
• Power supply wattage
• Knife options
• Paper low sensor
• Printhead resistance setting
For more information about See this section
Using the configuration menu “Configuring the Printer”
to configure the printer on the next page.

A795 User Guide:Programming Supplement
Chapter 2:Diagnostics and Configuration
16
Configuring the printer
The configuration menu allows you to select functions or change various settings for the printer.
Instructions printed on the receipt guide you through the processes.
Caution: Be extremely careful changing any of the printer settings to avoid changing
other settings that might affect the performance of the printer.
Connector
Cover Open
Off
Switch 1 & 2 are
shown in the
normal OFF position
On
DIP Switches
1212121212
1Open the connector cover.
2Set DIP Switch 1 to ON position (down). DIP Switch 2
should be in the OFF position (up).
Paper Feed
Button
Receipt
Cover
3Make sure receipt paper is loaded in the printer before
proceeding. (For loading instrrctions, see the A795
User Guide.)
4Cycle DIP switch 2 down (reset ON position), then up
(normal OFF position).
- or -
Press and hold the paper feed button while closing the
receipt cover, continually holding the paper feed button
until the configuration printout begins.
• The printer beeps, prints the diagnostics form and
the configuration main menu.
• The printer pauses and waits for a main menu
selection to be made (see sample printout).
****************** MAIN MENUMAIN MENU ********************
**************************************************************
Select a sub-menu :
- EXIT -> 1 click
- Print Current Configuration -> 2 clicks
- Set Communication Interface -> 3 clicks
- Set Diagnostics Modes -> 4 clicks
- Set Emulation/Software Options -> 5 clicks
- Set Hardware Options -> 9 clicks
Enter code, than hold Button DOWN
at least 1 second to validate
5To communicate with the printer, you will press the
paper feed button using either short or long clicks.
Use a long click (more than one second) for “yes” and
a short click for a “no.” Follow the printed instuctions
to make selections.
6Continue through your menu selections until you are
asked, “Save New Parameters?”. Select “Yes” or “No.”
aIf you wish to save, select “Yes,” then return DIP
switch 1 to the OFF Postion (up).
b. Open the receipt cover.
Press and hold the paper feed button while closing
the receipt cover.
• The diagnostic printout verifies your new
settings.
7If you would like to continue configuring the printer,
select “No.” The printer then returns to the
configuration menu, where you can set parameters
again.

A795 User Guide:Programming Supplement
Chapter 2:Diagnostics and Configuration 17
Communicationinterface
To change the communication interface settings, enter the configuration menu, select “Set
Communication Interface” from the main menu and answer “Yes” to “SET INTERFACE TYPE?”
printed on the receipt.
Caution: Be extremely careful changing any of the printer settings to avoid inadvertently
changing other settings that might affect the performance of the printer.
Press the paper feed button as instructed to select the
communication interface you want. • Communication interface
• RS-232C interface: 1 click
• USB: Auto when no
RS-232C activity
RS-232Cserialinterfacesettings
To change the RS-232C serial interface settings, enter the configuration menu, select “Set
Communication Interface” from the main menu and answer “No” to “SET INTERFACE TYPE?”
printed on the receipt. This will take you to the instructions for selecting the RS-232C settings.
Caution: Be extremely careful changing any of the printer settings to avoid inadvertently
changing other settings that might affect the performance of the printer.
Press the paper feed button as instructed on the configuration menu to select the RS-232C
settings you want to change.
• Baud rate
• 115200 baud: 1 click
• 57600 baud: 2 clicks
• 38400 baud: 3 clicks
• 19200 baud: 4 clicks
• 9600 baud: 5 clicks
• 4800 baud: 6 clicks
• 2400 baud: 7 clicks
• 1200 baud: 8 clicks
• Number of data bits
• 8 Data Bits: can not be changed
• Stop bits
• 1 Stop Bit: can not be changed
• Parity
• Disabled: Short click
• Hardware flow control
• Software (XON/XOFF): long click
• Hardware (DTR/DSR): short click
• Data reception errors
• Ignore errors: long click
• Print “?”: short click
Note: Press the paper feed button for at least one
second to validate the selection.
For more information about See this section
Setting the RS-232C Serial “Configuring the Printer”
interface settings on previous page.

A795 User Guide:Programming Supplement
Chapter 2:Diagnostics and Configuration
18
Printeremulations
To change the printer emulations settings, enter the configuration menu, select “Emulation/
Software Options” from the main menu and answer “Yes” to “SET THE PRINTER
EMULATIONS?” printed on the receipt. This will take you to the instructions for setting the
printer emulation.
Caution: Be extremely careful changing any of the printer settings to avoid inadvertently
changing other settings that might affect the performance of the printer.
Press the paper feed button as instructed to select the
printer emulation you want.
• A795 native mode: 1 click
• A794 emulation: 2 clicks
• Axiohm A793: 3 clicks
• Epson TM-T88: 4 clicks
Note: Press the paper feed button for at least one
second to validate the selection.
For more information about See this section
Setting the printer emulation “Configuring the Printer”

A795 User Guide:Programming Supplement
Chapter 2:Diagnostics and Configuration 19
Printersettings andfunctions
To change the printer settings and functions, enter the configuration menu, select the sub-menu
from the main menu and answer the questions printed on the receipt until you come to the
instructions for selecting the printer settings.
Caution: Be extremely careful changing any of the printer settings to avoid inadvertently
changing other settings that might affect the performance of the printer.
Press the paper feed button as instructed to select the
printer settings you want.
Selecttheemulation/softwareoptionssub-menuto
set:
• Default lines per inch
This function allows you to set the default for lines per
inch to either 8.13, 7.52, 6.77, or 6.00.
• 8.13 lines per inch: 1 click
• 7.52 lines per inch: 2 clicks
• 6.77 lines per inch: 3 clicks
• 6.00 lines per inch: 4 clicks
• Carriage return usage
This function allows the printer to ignore or use the
carriage return (hexadecimal 0D) command depending
on the application. Some applications expect the
command to be ignored while others use the command
as a print command.
• Ignore carriage return: long click
• Use carriage return as print command: short click
Selectthe diagnosticmodessub-menutoset:
• Data scope mode
For more information, see “Enable or disable data
scope mode” section later in this chapter.
Selectthehardwareoptionssub-menutoset:
(monochromepapersonly)
• Print density
• 100% 1 click
• 110% 2 clicks
• 120% 3 clicks
WARNING: Choose a print density setting no higher than
necessary to achieve acceptable print density.
Failure to observe this rule may result in a
printer service call. Failure to observe this rule
may void the printer warranty. Consult your
Axiohm technical support specialist if you have
questions.
• Power supply wattage
You can choose between a 55-Watt or 75-Watt power
supply.
• 55-Watt power supply: 1 clicks
• 75-Watt power supply: 2 clicks
• Knife option
• Knife enabled: long click
• Knife disabled: short click
• Paper low sensor
• Paper low sensor enabled: long click
• Paper low sensor disabled: short click
• Printhead resistance setting
For more information on this setting, see “Printhead
resistance” section later in this chapter.
Note: Press the paper feed button for at least one
second to validate the selection.
For more information about See this section
Setting the printer functions “Configuring the Printer”
and settings

A795 User Guide:Programming Supplement
Chapter 2:Diagnostics and Configuration
20
Enableordisabledatascope mode
The data scope mode test prints a hexadecimal dump of all data sent to the printer: “1” prints as
hexadecimal 31, “A” as hexadecimal 41 and so on. This helps troubleshoot communication
problems and runs during a normal application (after being enabled through printer configuration).
Note: Data scope mode is usually considered a level 1 diagnostic test.
Data scope mode is enabled and disabled by selecting the “Diagnostic Modes” sub-menu of the
configuration menu.
Caution: Be extremely careful changing any of the printer settings to avoid inadvertently
changing other settings that might affect the performance of the printer.
Press the paper feed button as instructed on the
“Diagnostic Modes Menu” to enable or disable the data
scope mode test.
• Off, normal mode
(Data scope mode disabled): 1 click
• Data scope mode (enabled): 2 clicks
• Receipt test mode: 3 clicks
Note: Press the paper feed button for at least one
second to validate the selection.
To runthe datascopemode:
1After you have enabled the data scope mode, exit the
configuration menu.
2Run a transaction from the host computer.
All commands and data sent from the host computer
will be printed as hexadecimal characters as shown in
the illustration.
To exitthedatascopemode:
1 Enter the configuration menu again.
See “Configuring the printer.”
2 Disable the data scope mode.
3 Exit the configuration menu.
The printer is on-line and can communicate normally
with the host computer.
For more information about See this section
Enabling the Data Scope Mode “Configuring the Printer”
Printheadresistance
The printhead resistance settings are set by entering the configuration menu, selecting “Set
Hardware Options” and answering “No” to the questions printed on the receipt until you come to
“SET PRINTHEAD SETTING?”.
The printhead resistance setting must match the character (A or B) marked on the heatsink on the
back of the printhead. This is only visible when top cover of the printer is removed, an operation
that can only be performed by a trained service representative.
Caution: Be extremely careful changing any of the printer settings to avoid inadvertently
changing other settings that might affect the performance of the printer.
Press the paper feed button as instructed on the
configuration menu to select the printhead resistance
setting:
• A Setting: long click
• B Setting: short click
Note: Press the paper feed button for at least one second
to validate the selection.
For more information about See this section
Setting the printhead “Configuring the Printer”
resistance