Opticon OPN2004 User guide

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OPN2004/5/6 and PX20
Batch demo application
Version RFI3793F (OPN2004/5/6) / RFM3793F (PX20)
April 25, 2016
Opticon Sensors Europe BV
Opticon, Inc.

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Contents
1Overview ...................................................................................................................3
1.1 Capabilities of the Batch demo application..............................................................3
2System Requirements ...............................................................................................4
2.1 Minimum required OS version..................................................................................4
2.2 OseComm32 host application...................................................................................4
2.3 NetO32 host application ...........................................................................................4
2.4 Appload.....................................................................................................................4
2.5 Software updates......................................................................................................4
3Customizing your barcode terminal..........................................................................5
3.1 Selecting the USB interface (VCP or MSD)................................................................5
3.2 OSE Universal Menu Book support...........................................................................6
4Barcode database file ...............................................................................................7
5Scanning barcodes ....................................................................................................8
6Deleting the database file from the barcode reader ................................................8
7Installing drivers........................................................................................................9
7.1 USB-VCP drivers ........................................................................................................9
8Using the Mass Storage Device (MSD) interface ......................................................9
9Using the USB-VCP interface...................................................................................11
9.1 OseComm................................................................................................................11
9.2 Neto32 ....................................................................................................................12
10 Loading software on the barcode reader ...............................................................14
10.1 Software codes .......................................................................................................14
10.2 Loading software using Appload.............................................................................14
11 Other available applications ...................................................................................15
11.1 Trouble shooting.....................................................................................................16
11.1.1 Restart mechanisms................................................................................................16
11.1.2 Halting your application..........................................................................................16
11.1.3 Halting the Operating System (only required if a corrupt OS is installed)..............16
12 Version history ........................................................................................................17
Appendix A: Database output formatting............................................................................18

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CAUTION: This information is subject to change without prior notice.
Copyright 2016, Opticon Sensors Europe BV, all rights reserved.
This manual may not, in whole or in part, be copied, photocopied, reproduced, translated or converted to any electronic or machine readable form
without prior written consent of Opticon Sensors Europe.
THE GENERAL USE AND FUNCTIONING OF THE BAR CODE SCANNER IS DESCRIBED IN THIS DOCUMENT. ALSO GENERAL SETUP
INSTRUCTIONS TO GET STARTED ARE DESCRIBED IN THIS DOCUMENT. FOR FURTHER INSTRUCTIONS CONSULT OPTICON OR YOUR
LOCAL DEALER.
1Overview
The batch demo application for the OPN2004/5/6 and PX20 demonstrates the ability of these devices to save
scanned barcode data into a file on the device, and for the devices to deliver the scanned barcode data file to a local
PC.
The data files can be retrieved from the scanners either by using USB-MSD (Mass Storage Device; the barcode
scanner effectively becomes a small USB thumb drive) or by using the OseComm or NetO file transfer protocols over
USB-VCP (Virtual COM Port; serial port emulation).
Since these barcode readers don't have a display to show any instructions to the user, this demo application
implements a user interface that consists entirely of using just the 2 keys to scan barcodes. This brief setup guide
describes all of the demo application’s features as well as handling instructions.
More product details, additional support and more configuration options to customize this application to your own
preferences (by using the Universal Menu Book) can be found at www.opticon.com
1.1 Capabilities of the Batch demo application
The following features are currently supported:
Scanning and storing barcodes into a database file on the internal RAM disk.
Retrieving the barcode database file via a local PC or laptop using the OseComm or NetO protocols over USB-
VCP.
Using the barcode readers as USB Mass Storage Devices (MSD) to retrieve the barcode database file.
OSE Universal Menu Book support to configure all barcode decoders, prefixes and suffixes, read modes, and
various other options.
Storing of configurations in non-volatile memory to allow all settings to be restored after a reset.
Configuring the output format of the database file.
Simple firmware upgrading via USB-VCP by using Appload, Opticon’s utility for flashing firmware on barcode
readers.

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2System Requirements
2.1 Minimum required OS version
This demo application requires the OS version:
OPN2004: RBIV0035 (or higher)
OPN2005: RBLV0035 (or higher)
OPN2006: RBNV0035 (or higher)
PX20: RBMV0035 (or higher)
To check the currently installed OS version, use Appload (Select: ‘Utilities’> ‘Show software version’).
To check the currently installed application version as well as the OS version, scan the 'Z1' menu label while in USB-
VCP mode. (See Universal Menu Book, Chapter 7.) Note that you will need to have an open serial terminal
connected to the COM/serial port allocated by your host PC’s OS to see the reported versions; this can be done with
Appload’s RS232 Monitor.
2.2 OseComm32 host application
This demo application can use Opticon’s OseComm32 application to transfer files from the barcode readers to a local
PC or laptop. This application can be downloaded from our web site. The minimum required OseComm32 version is
Version 1.0.4.0.
2.3 NetO32 host application
This demo application can use Opticon’s legacy file-transfer protocol, NetO, by use of the NetO32 Windows
application. This application can be downloaded from our website. Note that continued development for NetO32
has ceased in favor of OseComm, but it is still supported by this demo application. Use the NetO configuration label
in Appendix A to switch to the NetO protocol and see chapter 9.2 for more information.
2.4 Appload
To be able to install this demo application firmware onto your barcode reader, you'll need to have Appload installed
on your PC. Make sure you have the latest version of Appload, which can be found on our web site.
Please read the 'Loading of software' section of this manual before downloading any software on your barcode
reader.
2.5 Software updates
In the future more features and bug fixes are likely to be implemented into the OS and this application. To find out if
there are software updates available, please check our web site.
All available software and documentation for the barcode readers can be found at www.opticon.com in the
following sections:
‘Service and support' > 'Software' / 'Manuals' > 'OPN2004 / OPN2005 / OPN2006 / PX20’

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3Customizing your barcode terminal
In the following section a brief overview is given on how to configure your barcode reader for your desired
application.
3.1 Selecting the USB interface (VCP or MSD)
This batch demo application supports two methods of retrieving your barcode database file from the barcode
readers:
USB Mass Storage Device (USB-MSD)
USB Virtual Com Port (USB-VCP) using OseComm or NetO32 to retrieve the file
After loading this software on your barcode reader for the first time, the barcode reader will automatically be reset
to use USB-VCP by default.
If you would like to use your barcode reader as a USB-MSD device, read the label below.
(The labels below can be read without reading any SET/END labels)
USB-MSD default
More information on how to use your barcode reader as a USB-MSD device will be given in chapter 8.
To switch back to USB-VCP default (to load software, for example) read the label below.
USB-VCP default
More information on how to use your barcode reader with USB-VCP and OseComm32/NetO32 will be given in
Chapter 9.

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3.2 OSE Universal Menu Book support
The barcode readers this demo application supports can be configured by scanning various configuration barcodes
found in our Universal Menu Book*. This makes it possible to customize your barcode reader without having to
actually change the source code of this demo application.
The OPN/PX20 supports (most of the) menu options listed in the following chapters:
1. Defaults (See the supported default label listed above)
3.1 Enabling/disabling readable codes
3.2 Setting of fixed, minimum and maximum lengths of readable codes
3.3 Code specific options (2D symbologies only supported by the PX20)
4.1 Case conversion
4.2 Set prefixes
4.3 Set suffixes
5.1 Read modes, add-on wait modes
5.1.1 Multiple read reset time
5.1.2 Quiet zone options (margins)
5.2 Read time options
5.4 Redundancy
5.5 Positive and negative barcodes
6.1 Buzzer settings
6.2 Good read LED options
7.1 Diagnostics
* The Universal Menu Book can be downloaded from our web site.

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4Barcode database file
All scanned unique barcodes are stored in a database file with non-fixed length records. Besides the barcode data,
the quantity, serial number and a date/time stamp can be stored.
The default format of each record in the database file is:
<Barcode>,<serial #>,<hh:mm:ss>,<dd/mm/yyyy>
Example:
8710841030181,003278,14:41:03,23/11/2009
8710841090246,003278,14:41:04,23/11/2009
9780131103627,003278,14:41:00,23/11/2009
The filename of the database is 'SCANNED.TXT', which is stored on the barcode readers.
The resulting database file can be imported into various applications as a comma-separated value (CSV) file.
When using the USB-VCP with OseComm or NetO to retrieve the barcode data, any transmitted data will be
appended (by default) to any previously retrieved barcode data on your host PC, so all data of one or more barcode
readers will end up in a single database file. The barcode file will be deleted from the barcode reader after successful
transmission.
When using USB-MSD you can manually retrieve the database file 'SCANNED.TXT'. *
*Since the USB-MSD file system is read-only by default, use the +-FORMAT-+ label on chapter 6 to erase the data
after all barcodes have been copied from the disk (See chapter 6 and 8 for more information).
To customize the output format of the database file, please refer to Appendix A.
If a quantity field is specified in the output format, then each identical barcode will increase the quantity by one.

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5Scanning barcodes
This demo application uses the trigger button to enable the scan engine to scan barcodes.
If a barcode is read using the trigger key and is successfully read, a good-read beep is sounded and a green good-
read LED is shown. The barcode is then stored in the database with a quantity of '1'. If the same barcode is scanned
again the quantity is incremented by one, if quantity is an enabled field in the barcode database output format.
To decrement the quantity of a barcode that's already in the database the barcode should be read using the small
delete key. A short good read beep is sounded and an orange good-read LED is shown.
If a barcode is scanned using the delete key that isn't present in the database, or that already has a quantity of '0', a
low error beep is sounded and a red LED is shown.
Negative quantities are not supported by default, but when using the 'Negative quantities' option (see Appendix A) it
is possible to scan negative quantities of barcodes. When a specific barcode has a negative quantity the LED color
changes from green (add) or orange (subtract) to red on a good read and the sound becomes slightly lower.
6Deleting the database file from the barcode reader
It is possible that your barcode reader may become full, have a corrupt flash disk or you’ve successfully copied the
barcode data from the disk in USB-MSD mode. In these situations it is possible to read the label below to erase all
files from the flash disk.*
_+-FORMAT-+_
You can also delete all the files on the flash disk by holding the clear key (small square button) for 10 seconds. This
option is disabled by default; see Appendix A for codes to toggle this option on and off.
* Note: If the batteries of the barcode readers go dry, then the barcode readers don’t lose their barcode data.
However it is possible that the internal clocks will be reset if the batteries are completely drained. This requires the
correct time to be reconfigured using Appload or OseComm.

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7Installing drivers
7.1 USB-VCP drivers
To be able to communicate with the barcode readers using USB-VCP, you will need to have Opticon’s USB driver
installed on your PC. This driver can be found on our website on the 'Service and Support' page.
www.opticon.com/SERVICE-AND-SUPPORT.aspx
The driver can be found in the section called 'Software' and then selecting the OPN2004, OPN2005, OPN2006 or
PX20 on the following page.
USB Drivers Installers.exe
USB-VCP driver for Windows 2000 , Windows XP (32bit) & Windows Vista/7 (32bit)
USB-VCP driver for Windows XP (64bit) & Windows Vista/7 (64bit)
After installing the USB driver, you can connect your barcode reader to USB using the mini-USB cable. Windows will
then automatically install a virtual COM port on your PC, which can be selected in various applications, like Appload,
Hyperterminal, OseComm32 and NetO32.
8Using the Mass Storage Device (MSD) interface
When the USB-MSD interface has been selected (see chapter 3.1) the barcode reader will behave like a read-only
USB thumb drive when connected to USB.
Since version RFx3793x the file system has been made read-only (write protected) due to issues with Windows 8.1
and Windows 10, causing the file system to become corrupt when the device was disconnected without performing
a safe removal. This is due to the incorrect creation of a ‘system volume information’ folder on the FAT12 file system
by Windows.
When using Windows 8.1 and 10. To prevent data-loss, make sure you enable the Windows option: ‘Do not allow
locations on removable drives to be added to libraries’before considering re-enabling full access using the options
below :
Any scanned barcodes will be stored in a comma separated value file called ‘SCANNED.TXT’, which can be copied
from the barcode reader using a file browser.

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Due to the limited amount of flash memory inside the barcode readers the size of the file system is rather small,
being about 1MB. This is enough space for storing barcodes, but not for using the barcode readers as a portable hard
drive.
Tip: Barcode storage capacity can be increased by 100% by disabling the delete-key and quantity field (because
'SCANNED.TMP' and 'SCANNED.IDX' will not be used)
Important notes:
Since the file system is read-only by default, use the +-FORMAT-+ label on chapter 6 to erase the data after all
barcodes have been copied from the disk.
When manually deleting ‘SCANNED.TXT’ also delete the local files 'SCANNED.TMP' and 'SCANNED.IDX' from the
disk as well, because those are the files the barcode terminal is actually using, while 'SCANNED.TXT' is merely an
export of these 2 files.
Editing 'SCANNED.TXT' will have no effect and will be reverted back to its previous state as soon as the USB cable
is subsequently connected again.
Editing 'SCANNED.TMP' will cause 'SCANNED.IDX' (fast search index-file) to become corrupt, which can cause the
barcode reader to crash!

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9Using the USB-VCP interface
When the USB-VCP interface has been selected (see chapter 3.1), the barcode database file can be transmitted to a
local PC using the OseComm or NetO file transfer protocols. To be able to receive the files on the host, you'll need
OseComm32 or NetO32 installed. The latest version of OseComm32 can be downloaded from our website under
'Service and support' > 'Software' > 'OseComm'. NetO32 can be downloaded from
http://ftp.opticonusa.com/Downloads/NetO32.zip.
OseComm is used by default in this demo application. OseComm32’s use will be described below. The use of
NetO32 will be described in the following chapter.
Configuration codes to switch between OseComm and NetO32 are listed in Appendix A.
9.1 OseComm
The serial configuration of OseComm32 is limited to selecting the correct COM-port of your device in the Serial port
Communication Settings window of OseComm32.
Because the serial port of your barcode reader only exists while the barcode reader is connected, choose ‘x times
success’ as ‘Protocol type’ to be able to safely disconnect the USB cable after the protocol has finished. Don’t
disconnect your device while the protocol is still running!
Select ‘Run protocol at start’ if you wish to execute the protocol tasks at startup.
Next, go to ‘Protocol Tasks’, select ‘Receive File(s)’ under ‘Task Group’ and press ‘Add task’.

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In the Receive Files(s) Dialog the task can be configured as shown in the following image.
Finally, select ‘Options’ > ‘Start Protocol’.
More information about additional OseComm32 features can be found in the help file of OseComm32.
9.2 Neto32
When the USB-VCP interface has been selected (see chapter 3.1) and the NetO protocol (see Appendix A), then the
barcode database file can be transmitted to a remote PC or laptop using NetO32. The data is transmitted by the USB
cable (USB-VCP). To be able to receive the files on the host, you'll need NetO32 to be installed. The latest version of
NetO32 can be downloaded from our web site under 'Service and support' > 'Software' > 'Neto32'. More information
about additional Neto32 features that aren't described in this manual can be found the help file of NetO32.
Screenshot of the main window of NetO32

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When using USB-VCP and the USB cable to retrieve your data, then the RS232 configuration of NetO32 is limited to
selecting the correct COM-port of your device in the RS232 configuration window of NetO32.
However, when using the USB cable it's not possible to keep NetO32 running in the background due to the fact that
the USB COM-port won't be present on your system until you've physically connected your device to your USB port.
Also it's not recommended to disconnect or to reconnect your OPN200x/PX20 without having stopped the NetO-
protocol first.
For these reasons it's easiest to place a NetO32 configuration file on your desktop that downloads the data from
your device once and then immediately closes again. This can be done by selecting the following 3 options in NetO32.
Protocol > Polling and Timing > Protocol type: Single
Protocol > Polling and Timing > Protocol type: Quit after single run
Miscellaneous > Appearance > Run protocol on start
The correct sequence to retrieve the data would be connecting your device to the USB port, clicking on the NetO32
configuration file and then remove the device from your PC when desired. Don't forget it regularly needs be charged
as well.

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10 Loading software on the barcode reader
The following chapter will describe how to load new software onto the barcode readers.
Important note: When installing a new operating system firmware or application firmware on the barcode reader
it’s possible that any barcode data left on the device will be lost!
10.1 Software codes
The barcode readers run an embedded OS (operating system) and an embedded application. Both the OS and the
application can be loaded by a small PC application called Appload, which can be downloaded from our web site.
The operating system filename and version that contain a unique three-letter code, signifying the particular barcode
reader the operating system is built for. Before you try to load a new operating system on your barcode reader, you
have to know which operating system file (e.g. RBIVxxxx.hex) should be loaded on your barcode reader. This same
convention is typically followed for application filenames and versions as well.
In the table below you can find the software codes for the supported barcode readers.
Terminal
OS
Application
OPN2004
RBI
RFI
OPN2005
RBL
RFI / RFL
OPN2006
RBN
RFI / RFL / RFN
PX20
RBM
RFM
10.2 Loading software using Appload
To be able to load software on the barcode readers using the mini USB cable, first make sure you’ve selected the
USB-VCP interface (see chapter 3.1), because USB-MSD is not yet a supported interface from which software can be
installed. Also make sure you have the USB-VCP driver installed on your PC (see chapter 7.1).
After that, please follow the instructions below.
Connect the barcode reader to your PC or laptop using the mini-USB cable.
Start Appload and select the (virtual) COM port of your barcode reader in Appload.
Select the OS or application file in Appload using File > Download.

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11 Other available applications
Besides this batch demo application, there are other applications available on our web site that might fit your
specific use case better.
Software V3727x: OPN2001 simulation application
This application turns the OPN2004/5/6 and PX20 into an OPN2001-compatible batch scanner.
Use this OPN application in combination with the OPN2001 PC application for Windows (or develop your own
application using the SDK that's available for the OPN2001).
Note: When planning to use the OPN2004/5/6 solely as a standard OPN2001, so without Bluetooth or the need to
run other applications, please note the following (hardware) differences:
The OPN2004/5/6 don’t support laser aiming (laser dot)
The OPN2004/5/6 can’t change their scan angle to shorten the laser line
The flash disk of the OPN2004/5/6 is slower than the storage method of the OPN2001
The PX20 supports 2D-symbologies
Software V3791x: Bluetooth demo application
The Bluetooth demo application demonstrates the Bluetooth capabilities of the OPN2005, OPN2006 and PX20.
The following features are currently supported:
Connecting to a remote device (as master) and transmitting data using Bluetooth SPP (analogous to USB-VCP)
Making the OPN2005/6 or PX20 connectable (as a slave device) and discoverable to allow a remote host device
to connect with the OPN2005/6 or PX20, and subsequently allowing the transmission of data using Bluetooth
SPP
Making the OPN2005/6 or PX20 connectable (as a slave device) and discoverable as a Bluetooth HID (keyboard)
device to allow a remote host device to connect with the OPN2005/6 or PX20 , subsequently allowing the
transmission of data as if it were being typed on the remote host device
Reconnecting to a paired remote device (as master) to quickly reestablish a lost Bluetooth SPP or HID connection
without having to reenter a PIN code
Opticon Universal Menu Book support and configuration using Opticon serial commands
iPhone / iPad compatibility (remote wake and virtual keyboard toggle)
Secure Simple Pairing (SSP) using the “Just works” model
USB-VCP and USB-HID support when not connected to Bluetooth

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11.1 Trouble shooting
Since the barcode readers don't have a display, they also don't have a system menu to resort to when a crashing
application or OS prevents you from loading new software on your barcode reader.
For this reason the barcode readers have a few escape mechanisms to allow you to restart, halt your application,
and/or install new software. This can be very useful in case the barcode reader has crashed or is restarting due to a
crashing application or OS.
11.1.1 Restart mechanisms
Automatic
The barcode readers have a watchdog timer to determine whether the OS is
still running or has crashed. This watchdog will cause the device to restart
after about 1 second if the OS has crashed. This watchdog timer will not
cause a restart when only the application has crashed.
Manually
The barcode readers have a manual restart mechanism that allows you to
restart in situations that the OS is still running, but the application has
crashed. In order to activate this mechanism, press and hold both the trigger
and delete key for at least 20 seconds. After the barcode reader has sounded
a short beep, you can release both keys to complete the restart.
11.1.2 Halting your application
Restart your application using one of the two restart methods listed above, but keep both keys pressed after the
short beep.
Release the trigger key first to halt the application.
If successful, the LED of your barcode reader should now be blinking orange. You should now be able to load new
application or OS software.
To exit the halted application state, press both keys for 20 seconds.
11.1.3 Halting the Operating System (only required if a corrupt OS is installed)
Restart your application using one of the 2 methods listed above, but keep both keys pressed after the short
beep.
Release the clear key first to halt the operating system.
If successful, the LED of your barcode reader should now be blinking red. You should now be able to load a new OS.
To exit the halted operating system state, press both keys for 3 seconds.

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12 Version history
RFG35410
First release
December 7, 2009
RFG35411
Added configurable database formatting
December 14, 2009
RFG35412
Fixed very slow storing of barcodes
February 3, 2010
RFG35413
Preliminary addition of USB-MSD
June 10, 2011
RFG35414
Added USB-MSD and updated manual
June 17, 2011
RFG35415
Fixed USB-MSD issue
June 29, 2011
RFG35416
Small LED bug fixes
March 3, 2012
RFIS0940
First release OPN2004
December 26, 2012
RFI37931
OSE version OPN2004 with bug fixing
April 9, 2013
RFI37932
Fixed USB-MSD issues
Added OPN2005 support
Added PX20 support (incl. 2D barcodes)
April 25, 2013
RFI37933
Added NetO support
Ported previous functionality for field length from RFG35416
Removed blinking green LED when connected to USB –charge
indicator is now active
Small fixes in regards to read mode
July 31, 2013
RFI37934
Added ability to format flash disk by holding clear key for 10 seconds
August 22, 2013
RFI37935
Format of flash disk by clear key now an option
Support for fixed and variable length barcode and quantity fields,
configured by options
September 17, 2013
RFI37936
Fixed reading of C128 configuration labels for the PX20
October 22, 2013
RFI37937
Fixed database issue at which duplicate barcodes could create
double entries and deleting of a barcode could fail
January 27, 2014
RFI37938,
RFM37938
Split application into 2 separate version to improve battery life of
OPN2004/5 and read modes of PX20
Appload now returns application version
Fixed issue that could cause a corrupted database
February 20, 2014
RFI37939,
RFM37939
Scanning barcodes with a full file system now properly indicates it
can’t store a barcode
March 4, 2014
RFI3793A,
RFM3793A
- Added OPN2006 compatibility to manual
- Allowed reading of barcodes in USB-MSD mode when charging only
September 19, 2014
RFI3793B,
RFM3793B
(OS: RBxV0032)
- Improved read performance
- Fixed power consumption issue OPN2004
November 11, 2014
RFI3793C,
RFM3793C
- Fixed incorrect disk-full behavior
- OPN200x: Fixed 2 digit Code-128 labels to be identified as code-128
menu labels
June 19, 2015
RFI3793E,
RFM3793E
(OS: RBxV0035)
- Increased barcode capacity by 100% (when delete-key and quantity
field are both disabled)
- Fixed file system issues (causing corrupted/missing data)
- Changed USB-MSD to read-only to prevent Windows 8.1/10 from
corrupting the FAT (without save removal).
- Changed default output format of barcode file (no quantity field is
added)
January 26, 2016
RFI3793F,
RFM3793F
- Added field separator: Space
April 25, 2016
Please check our web site at www.opticon.com to see if there are updates available for this application, the
Operating System, OseComm32 and/or this manual.

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Appendix A: Database output formatting
The default output format of each record in the database file is:
<Barcode>,<serial #>,<hh:mm:ss>,<dd/mm/yyyy>
However, this application allows you to customize this format to make it suitable for your own application. The
following aspects of the output format are configurable. Read the configuration barcodes on the following page to
select the various options.
Date format
16 date formats are supported (see following page)
Time format
2 time formats are supported (hh:mm:ss and hh:mm)
Field separator
The field separator is the character that is used to separate the various fields of a
database record.
7 different separators can be selected.
Enable/disable
delete key *
By default the small delete key can be used to remove a previously read barcode
from the database or reduce its quantity by 1.
By disabling the delete key this option can be disabled.
Barcode field size
By default the barcode field size is variable length, but this can be changed
between 1 and 99 characters by reading 2 configuration labels on the following
page to specify both digits of the desired size.
Quantity field size *
By default the quantity field is variable length, but this can be changed from 1 to
9 digits if desired.
Delete record
if quantity=0
By default a record is deleted if a barcode in the database (with a quantity of 1)
is read using the delete key. However if you desire to keep a record of all delete
actions it is possible to leave the record with a quantity of ‘0’in the database by
disabling this option.
Negative quantities
allowed/not allowed
By default you can’t delete a barcode that’s not present in the database.
However for some purposes it can be useful to be able to read them anyway to
specify a negative quantity.
Field output sequence
Each record can contain up to 5 fields (barcode, date, time, quantity and serial
number). The output sequence can be customized by reading up to 5 labels on
the following page.
By not specifying a quantity field each barcode will be stored separately in the
database. The database also will not be sorted and in case a barcode is read
using the delete key the last occurrence in the database will be deleted.
It is not allowed to not specify a barcode field in the output sequence.
Note: When changing the field sequence, make sure you’ve downloaded the
existing database file from the OPN/PX20 or otherwise formatted the RAM disk.
* Hint: Disabling the delete key and quantity field increases storage capacity by 100%,
because no .idx-file and .tmp are created.

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