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Microscan MS-820 User`s manual
MS-820
Industrial
Bar Code Scanner
User's Manual
P/N 83-000820 Rev G
Copyright © 2002
by Microscan Systems, Inc.,
1201 S.W. 7th Street, Renton, Washington, U.S.A. 98055
(425) 226-5700 FAX: (425) 226-8682
ISO 9001/Certification No. 00-1047
All rights reserved. The information contained herein is proprietary and is provided solely for the
purpose of allowing customers to operate and/or service Microscan manufactured equipment
and is not to be released, reproduced, or used for any other purpose without written permission
of Microscan.
Throughout this manual, trademarked names might be used. Rather than put a trademark (™)
symbol in every occurrence of a trademarked name, we state herein that we are using the
names only in an editorial fashion, and to the benefit of the trademark owner, with no intention
of infringement.
Disclaimer
The information and specifications described in this manual are subject to change without
notice.
Latest Manual Version
For the latest version of this manual, see the Download page on our web site at
www.microscan.com. For technical support email helpdesk@microscan.com.
ii
MS-820 Industrial Bar Code Scanner User’s Manual
Microscan Limited Warranty Statement and Exclusions
What is Covered?
Microscan Systems Inc. warrants to the original purchaser that products manufactured by it will
be free from defects in material and workmanship under normal use and service for a period of
one year from the date of shipment. This warranty is specifically limited to, at Microscan’s sole
option, repair or replacement with a functionally equivalent unit and return without charge for
service or return freight.
What is Excluded?
This limited warranty specifically excludes the following: (1) Any products or parts that have
been subject to misuse, neglect, accident, unauthorized repair, improper installation, or abnormal conditions or operations; (2) Any products or parts that have been transferred by the original purchaser; (3) Customer mis-adjustment of settings contrary to the procedure described in
the Microscan Systems Inc. owners manual; (4) Upgrading software versions at customer
request unless required to meet specifications in effect at the time of purchase; (5) Units
returned and found to have no failure will be excluded; (6) Claims for damage in transit are to
be directed to the freight carrier upon receipt. Any use of the product is at purchaser’s own risk.
This limited warranty is the only warranty provided by Microscan Systems Inc. regarding the
product. Except for the limited warranty above, the product is provided “as is.” To the maximum
extent permitted by law, this express warranty excludes all other warranties, express or implied,
including but not limited to, implied warranties of merchantability and fitness for a particular
purpose. Microscan Systems Inc. Does not warrant that the functions contained in the product
will meet any requirements or needs purchaser may have, or that the product will operate error
free, or in an uninterrupted fashion, or that any defects or errors in the product will be corrected,
or that the product is compatible with any particular machinery.
Limitation of Liability.
In no event shall Microscan Systems Inc. be liable to you or any third party for any special, incidental, or consequential damages (including, without limitation, indirect, special, punitive, or
exemplary damages for loss of business, loss of profits, business interruption, or loss of business
information), whether in contract, tort, or otherwise, even if Microscan Systems Inc. has been
advised of the possibility of such damages. Microscan Systems Inc.’s aggregate liability with
respect to its obligations under this warranty or otherwise with respect to the product and documentation or otherwise shall not exceed the amount paid by you for the product and documentation.
Some jurisdictions do not allow the exclusion or limitation of incidental or consequential damages or limitations on an implied warranty, so the above limitation or exclusion may not apply to
you. This warranty gives you specific legal rights, and you may also have other rights which may
vary from state to state.
MS-820 Industrial Bar Code Scanner User’s Manual
iii
Table of Contents
Chapter 1
Quick Start
Step 1 Hardware Required...................................................................... 1-2
Step 2 Connect the System .................................................................... 1-3
Step 3 Install ESP-MP............................................................................. 1-6
Step 4 Select Scanner Model.................................................................. 1-7
Step 5 Select the Communications Ports................................................ 1-8
Step 6 Connect with Auto Connect ......................................................... 1-9
Step 7 Retrieve Scanner Settings ......................................................... 1-10
Step 8 Compare Scanner Settings........................................................ 1-11
Step 9 Position Scanner and Symbol.................................................... 1-12
Step 10 Autocalibrate Scanner ............................................................. 1-13
Step 11 Test Range for Bar Code Label ............................................... 1-14
Step 12 Make Changes to Configuration and Save .............................. 1-15
Chapter 2
Communications
Communications Options ........................................................................ 2-2
Host Port Parameters.............................................................................. 2-5
RS422 Status .......................................................................................... 2-7
Auxiliary Port ........................................................................................... 2-8
Daisy Chain Autoconfigure.................................................................... 2-16
Daisy Chain Remote Scanner ID .......................................................... 2-17
IrDA Port ............................................................................................... 2-18
Menu Mode ........................................................................................... 2-19
Chapter 3
Protocol
Protocol ................................................................................................... 3-4
LRC ......................................................................................................... 3-9
Response Timeout ................................................................................ 3-10
Intercharacter Delay.............................................................................. 3-11
Output Data Format .............................................................................. 3-12
Auxiliary/Configuration System Data..................................................... 3-14
Network Client....................................................................................... 3-15
Chapter 4
Read Cycle/Trigger
Trigger Mode........................................................................................... 4-4
Serial Trigger......................................................................................... 4-10
External Trigger State ........................................................................... 4-12
End of Read Cycle ................................................................................ 4-13
Multilabel ............................................................................................... 4-16
Chapter 5
Codes
Narrow Margins....................................................................................... 5-5
iv
MS-820 Industrial Bar Code Scanner User’s Manual
Symbology ID .......................................................................................... 5-6
Background Color.................................................................................... 5-7
Code 39 ................................................................................................... 5-8
Codabar................................................................................................. 5-11
Interleaved 2 of 5................................................................................... 5-14
UPC/EAN............................................................................................... 5-17
PDF417 ................................................................................................. 5-20
Code 128 ............................................................................................... 5-22
UCC/EAN-128 ....................................................................................... 5-23
Code 93 ................................................................................................. 5-26
Pharma Code ........................................................................................ 5-27
Autodiscriminate .................................................................................... 5-29
Chapter 6
Autocalibration
Overview of Autocalibration..................................................................... 6-2
Autocalibration by ESP............................................................................ 6-4
Autocalibration by Serial Command ........................................................ 6-7
Autocalibration by Embedded Menu........................................................ 6-8
Chapter 7
Calibration Database
Overview of Calibration Database ........................................................... 7-2
Calibration Database by ESP .................................................................. 7-3
Calibration Database by Serial Command .............................................. 7-4
Calibration Database by Embedded Menu.............................................. 7-6
Chapter 8
Optoelectrics
Overview of Optoelectrics........................................................................ 8-4
Optoelectric Database Modes ................................................................. 8-5
Chapter 9
Raster/LaserControl
Raster Setup............................................................................................ 9-3
Laser Setup ............................................................................................. 9-6
Raster/Laser by Embedded Menu........................................................... 9-9
Chapter 10
Scanner Setup
Scan Speed ........................................................................................... 10-4
Focus..................................................................................................... 10-5
Gain Adjustment .................................................................................... 10-6
Tracking................................................................................................. 10-6
Transition Counter ................................................................................. 10-7
Maximum Element ................................................................................. 10-8
Chapter 11
Matchcode
Overview of Matchcode ......................................................................... 11-4
Matchcode Type .................................................................................... 11-5
MS-820 Industrial Bar Code Scanner User’s Manual
v
Master Label Database ....................................................................... 11-11
New Master Pin................................................................................... 11-16
Chapter 12
Outputs
Noread Message................................................................................... 12-4
Bar Code Output ................................................................................... 12-5
Serial Verification .................................................................................. 12-8
Beeper Status ..................................................................................... 12-10
Quality Output ..................................................................................... 12-11
Chapter 13
Output Format and Filtering
Overview of Output Format/Filtering ..................................................... 13-4
Extraction Mode .................................................................................... 13-5
Insertion Mode ...................................................................................... 13-7
Advanced Output Format by ESP ......................................................... 13-9
Multilabel Output Format Assignment ................................................. 13-10
Ordered Output/Filtering ..................................................................... 13-11
Master Database in ESP..................................................................... 13-16
Chapter 14
Discrete I/0
Input 1 ................................................................................................... 14-4
Output 1 ................................................................................................ 14-5
Output 2 .............................................................................................. 14-10
Output 3 .............................................................................................. 14-10
Diagnostic Outputs.............................................................................. 14-11
Chapter 15
Diagnostics
Warning Messages ............................................................................... 15-4
High Temperature Threshold ................................................................ 15-8
Low Temperature Threshold ................................................................. 15-9
Lifetime Hours ..................................................................................... 15-10
Present Ambient Temperature (deg. C) .............................................. 15-11
Counts................................................................................................. 15-12
Time Since Last Reset ........................................................................ 15-13
Chapter 16
Wiring Box Option
Wiring Box Description.......................................................................... 16-2
Installation Steps................................................................................... 16-3
Wiring Box Ports ................................................................................... 16-5
Wiring Box PCB with Connectors.......................................................... 16-8
Mounting Plate ...................................................................................... 16-9
Chapter 17
Utilities
File Transfer .......................................................................................... 17-5
Counters................................................................................................ 17-6
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MS-820 Industrial Bar Code Scanner User’s Manual
Part Number .......................................................................................... 17-8
Checksum.............................................................................................. 17-9
Read Rate ........................................................................................... 17-10
Device Control ..................................................................................... 17-12
Code Type ........................................................................................... 17-13
Defaulting/Saving/Initializing................................................................ 17-13
Appendices
Appendix A General Specifications .........................................................A-2
Appendix B Electrical Specifications .......................................................A-6
Appendix C IrDA Configuration Port......................................................A-13
Appendix D IrDA/Ir Comm for Palm Pilot...............................................A-15
Appendix E Serial Configuration Commands ........................................A-16
Appendix F Serial Command Format ....................................................A-19
Appendix G ASCII Table .......................................................................A-21
Appendix H Embedded Menus..............................................................A-23
Appendix I Defaulting/Saving/Initializing................................................A-24
Appendix J Position Scanner and Bar Code .........................................A-28
Appendix K Position Object Detector ....................................................A-29
Appendix L Test Decode Rate...............................................................A-30
Appendix M Formulas for Number of Decodes ....................................... A-31
Appendix N Operational Tips.................................................................A-35
Appendix O Interface Standards ...........................................................A-36
Appendix P Multidrop Communications.................................................A-38
Appendix Q Glossary of Terms .............................................................A-43
MS-820 Industrial Bar Code Scanner User’s Manual
vii
List of Figures
Figure 1-1 Hardware Configuration ........................................................... 1-2
Figure 1-2 Side View of IB-131 showing Host 25-pin Connection ............. 1-3
Figure 1-3 Low Density Ranges .............................................................. 1-10
Figure 1-4 High Density Ranges .............................................................. 1-10
Figure 1-5 Depth of Field ......................................................................... 1-11
Figure 4-1 Trigger Level ............................................................................ 4-6
Figure 4-2 Trigger Edge ............................................................................. 4-7
Figure 8-1 Output Message Flow .............................................................. 8-4
Figure 8-2 Read Cycle ............................................................................. 8-10
Figure 8-2 ESP Laser Framing Control ................................................... 8-11
Figure 8-3 Laser Framing Pattern ............................................................ 8-11
Figure A-1 MS-820 Dimensions ................................................................. A-2
Figure A-2 IB-131 Mechanical ................................................................. A-10
Figure A-3 Scanner/IB-131 Typical Setup ............................................... A-10
Figure A-4 IB-131 Multidrop Setup .......................................................... A-11
Figure A-5 Scanner/IB-131 Daisy Chain Setup ....................................... A-11
Figure A-6 Scanner/Symbol Position ....................................................... A-24
Figure A-7 Object Detector ...................................................................... A-25
Figure A-8 Ladder .................................................................................... A-27
Figure A-9 Picket Fence .......................................................................... A-28
Figure A-10 Angled Picket Fence ............................................................ A-28
Figure A-11 Polling Sequence ................................................................. A-34
Figure A-12 Polling Sequence ................................................................. A-35
viii
MS-820 Industrial Bar Code Scanner User’s Manual
List of Tables
Table 5-1 Symbology Identifier Option Values ........................................... 5-6
Table 9-1 Maximum Sweep Rates at Selected Sweep Arcs ...................... 9-5
Table 11-1 Maximum Characters for Master Label Database ............... 11-13
Table 17-1 Summary of Utility Serial Commands .................................... 17-3
Table A-1 MS-880 FIS Options ..................................................................A-3
Table A-2 MS-880 Read Ranges ...............................................................A-3
Table A-3 MS-880 Status Lights (on the side of the MS-880) ....................A-4
Table A-4 Power Connector .......................................................................A-7
Table A-5 Trigger Connector ......................................................................A-7
Table A-6 Host 9-pin Configuration Connector ..........................................A-7
Table A-7 Host 25-pin Connector ...............................................................A-8
Table A-8 Serial Configuration Commands in Numeric Order .................A-16
Table A-9 ASCII Table with Control Characters .......................................A-21
Table A-10 Communication Protocol Commands ....................................A-22
Table A-11 Multidrop Addresses ..............................................................A-42
About the MS-820 Scanner
The MS-820 scanner can decode high density bar code symbols from 3 to 30 inches. Its
IP65 and heavy industrial rating makes it ideal for applications such as conveyors,
assembly lines, or embedding within machinery.
Its application code resides in an onboard flash memory chip that can be easily updated
by downloads.1 A user interface program, the ESP-MP (Easy Setup Program–Multi-platform), can be downloaded from our web site (www.microscan.com) and runs on
Microsoft Windows 95™, Windows 98™, Windows NT™ and Windows 2000™ operating
systems. Alternately, configuration commands can be sent from an embedded, menudriven terminal program, or directly by host serial command strings.
1. See your Microscan sales representative to access the latest application codes.
MS-820 Industrial Bar Code Scanner User’s Manual
ix
About This Manual
This manual provides complete information on setting up, installing, and configuring
the MS-820 scanner. The chapters are presented in the order in which a scanner
might be setup and made ready for industrial operation.
Chapter 1, “Quick Start” provides overall step-by-step instructions for getting your
scanner operational with specific “go to” references to other chapters and appendices.
The appendices include specifications, reference tables of serial commands, ASCII
characters, multidrop setup and addresses, as well as other useful information relating to bar coding and electrical and mechanical setups for the scanner.
Host Communications
There are three ways the scanner communicates with a host:
1. Microscan’s Windows™ based ESP-MP™ (Easy Setup Program—Multi-Platform),
the preferred method which offers point-and-click ease of use and visual
responses to user adjustments.
2. Serial commands such as <Kr1> can be sent from a terminal program. They can
also be sent from the Terminal or Utility window within ESP-MP.
3. Embedded onboard menus are accessed from a terminal window with a <D>
command. These menus lack some of the functionality of the ESP-MP, but may be
more responsive in older, slower computers.
Keystrokes
Serial commands, selections inside instructions, and menu defaults are highlighted in
red bold. Cross-references are highlighted in blue. Web links and outside references
are highlighted in blue bold italics. References to menu topics are highlighted in
Bold Initial Caps. References to topic headings within this manual or other documents are enclosed in quotation marks.
Approvals
This equipment is in compliance or approved by the following organizations:
• CDRH (Center for Devices & Radiological Health)
• UL (Underwriters Laboratories, Inc.)
• cUL (UL mark of Canada)
• TüV (Technischer überwachungs-Verein)
• FCC (Federal Communication Commission)
• CE Compliant
• BSMI (Bureau of Standards, Metrology and Inspection)
x
MS-820 Industrial Bar Code Scanner User’s Manual
Safety Labels
The following labels are located on the side and back of the MS-820 scanner:
11-000024-01
Safety Label
UL, cUL
11-000031-01 S/N Label
1 1 -0 0 0 0 2 4 -0 1
1201 SW 7th St. Renton, WA 98055
www.microscan.com
CAUTION-LASER LIGHT WHEN OPEN-DO NOT STARE INTO BEAM.
PRODUCT CONFORMS TO USA DHHS 21 CFR SUBCHAPTER "J"
C AU TIO N
LASER LIGHT DO NOT STARE
INTO BEAM.
FIS NO.
LAS ER STRA HLUNG NICH T IN
DE N STRAHL BLI CKEN
LASE R KLAS SE 2
94nJ @ 38uS
J2
EN 60825-1: 1994
DIN VDE 0837 Teil 1: 1994-07
650 nm LASER DIODE
1.0 MILLIWATT MAX
V O RS ICH T
LISTED
UL 1950
4k68
MANUFACTURED
CLASS II LASER PRODUCT
LASERSTRAHLUNG, WENN ABDECKUNG
GEÖFFNET. NICHT IN DEN STRAHL BLICKEN
AVOID EXPOSURE
GD/RD
SERIAL NUMBER/MODEL NUMBER
LASER LIGHT IS EMITTED FROM THIS APERTURE
CE
CDRH
on
Top
RDY
PWR
11-000031-01
MADE IN USA
tüV
on
Back
FCC
on
Bottom
BSMI
MS-820 Industrial Bar Code Scanner User’s Manual
xi
Warning and Caution Summary
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 in a residential installation. This
equipment generates, uses, and can radiate radio frequency energy, and, if not
installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will
not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or
more of the following measures:
• Reorient or relocate the receiving antenna
• Increase the separation between the equipment and receiver
• Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected
• Consult the dealer or an experienced radio/TV technician for help
For connection to a UL listed direct plug-in power unit marked Class II and rated 10 to
28 VDC at 2.7 watts or greater.
European models must use a similarly rated Class I or Class II power supply that is
certified to comply with standard for safety EN 60950.
WARNING
Use of controls, adjustments, or performance of procedures other than
those specified herein may result in hazardous laser light radiation
exposure.
WARNING
There are no user serviceable parts in the scanner. Opening the scanner voids the Microscan Systems warranty and could expose the user
to laser diode power of up to 7 mW.
WARNING
The laser beam can be harmful to eyesight. Avoid eye contact with the
laser beam. Never point the beam at other people, or in a direction
where people may be passing.
xii
MS-820 Industrial Bar Code Scanner User’s Manual
Quick Start
1
Chapter Contents
Step 1 Hardware Required ......................................................................1-2
Step 2 Connect the System .....................................................................1-3
Step 3 Install ESP-MP .............................................................................1-4
Step 4 Select Scanner Model ..................................................................1-5
Step 5 Select the Communications Ports ................................................1-6
Step 6 Connect with Auto Connect ..........................................................1-7
Step 7 Retrieve Settings ..........................................................................1-8
Step 8 Position Scanner and Bar Code Label .........................................1-9
Step 9 Test Range for Bar Code Label..................................................1-10
Step 10 Make Changes to Configuration and Save...............................1-11
This chapter is designed to get your scanner up and running quickly using
Microscan’s ESP-MP™ so the user can get a sense of its capabilities and test bar
code samples. Detailed setup information for installing the scanner into the
actual application can be obtained in the subsequent chapters.
In addition to ESP, you can send commands to your scanner by serial commands and through the scanner’s embedded menus.
MS-820 Industrial Bar Code Scanner User’s Manual
1-1
1–Quick Start
Chapter
(Refer to figure 1-1.)
To get started you will need:
• An MS-820 scanner (1).
• A host computer (2) with either a terminal communications program or Microscan’s
ESP™ which runs under Windows™ operating system, Windows-95 or higher, including Windows NT™.
• A null modem configuration cable (3)
(Use cable P/N 61-300026-01 if your computer uses a 25-pin serial port connector.)1
• A scanner to IB-131 interface cable (4), P/N 61-000011-01.
• An IB-131 interface module (5).
• A power supply (6), P/N 97-100004-1005 (120V) or P/N 97-100004-06 (240V).
Caution: If using your own power supply, be certain that it is wired correctly and supplies voltage within the +10 to 28 VDC limits. Incorrect wiring or voltage can cause
software or equipment failures.
Note: An optional object detector (7) is shown here (P/N 99-440001-10).
1
4
2
5
Scanner
3
Host
Network
1–Quick Start
Step 1 — Hardware Required
Power
Trigger
7
6
Figure 1-1 Hardware Configuration
1. If using another host cable, make certain it does not have RTS/CTS connected to the host.
1-2
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 1 Quick Start
1. Connect the scanner to the IB-131 interface box, using the supplied cable with kit
P/N 98-000014-01. If making up your own cable, make certain that you connect
transmit pins to receive pins.
2. Connect IB-131 Host to Computer.1
(Refer to table A-3 and table A-8 for pin connections)
3. Use the host connector on the side of the IB-131 (figure 1-2) to connect with your
host computer.
1
25
Figure 1-2 Side View of IB-131 showing Host 25-pin Connection
Note: When wiring the IB-131 host connector to a 25-pin host connector (typical
desktop computer connection), cross pins 2 and 3. When wiring the IB-131 host
connector to a 9-pin host connector (typical portable computer connection), do
NOT cross pins 2 and 3. (See figure 1-2.)
4. Connect power supply as shown in Step 1, “Hardware Required.”
5. Power up the scanner.
1. If using your own null modem RS232 host cable, be certain that the host’s TxD connects to the
scanner’s RxD and the scanner’s TxD connects to the host’s RxD.
MS-820 Industrial Bar Code Scanner User’s Manual
1-3
1–Quick Start
Step 2 — Connect the System
1–Quick Start
Step 3 — Install ESP-MP1
(ESP-MP is short for Easy Setup Program–Multi-Platform.)
1. Insert your Microscan CD into your computer’s CD drive.
2. Launch Setup.exe under ESP_Software\Multi_Platform and follow the
prompts.2
If downloading from the web:
a. Go to http://www.microscan.com/esp
b. Enter your user name and password.
c. Select ESP-MP and download to your computer hard drive.
d. Extract ESP-MP WinZip files to a directory of your choice.
3. Note where your ESP.exe file is stored on your hard drive.
At the end of the install process, you should see the following icon on your
desktop:
4. Click the ESP-MP icon to start the program.
1. You can also access the scanner through its embedded menus. See Appendix G — “Embedded
Menus.”
2. Contact your sales representative
1-4
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 1 Quick Start
1–Quick Start
Step 4 — Select Scanner Model
When you start the program, the following dialog box will appear:
Note: If you need to select another model later, you can find it under Model Select
in the menu bar.
1. In the model dialog box, select your model.
2. Select the default name, MS-820-1
or type in a new name of your choice.
3. Click Yes when the following dialog
on the right appears.
MS-820 Industrial Bar Code Scanner User’s Manual
1-5
1–Quick Start
Step 5 — Select the Communications Ports
1. Select your communications port under COM Port.
COM1 is typically used for laptops.
COM1 and COM2 are typically for desktop computers.
2. Click the Start button.
1-6
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 1 Quick Start
After clicking the Start button in the Connecting to... dialog, allow time for the auto
connect routine to test all of the combinations. You will see a blue progress bar fill
across the Connecting to... dialog.
When connected, the CONNECTED message will appear in a green box in the status
bar on the bottom right of the dialog.
Tip: If you do not see either the CONNECTED or DISCONNECTED message at
the bottom of your dialog, try expanding the ESP window horizontally.
Tip: If connection fails, enable a different Com port and try again.
MS-820 Industrial Bar Code Scanner User’s Manual
1-7
1–Quick Start
Step 6 — Connect with Auto Connect
1–Quick Start
Step 7 — Retrieve Scanner Settings
Unless you have unchecked the default Upload After Autoconnect under Options,
the communications values of the scanner will be loaded automatically and displayed
under Scanner Values.
If Upload After Autoconnect is not checked, the scanner values will not be loaded
and ESP communications values will remain displayed under the heading, ESP Values.
Tip: Before doing Retrieve Scanner Settings, you may want to preserve your
current ESP settings to your computer as an ESP file by selecting Save or Save
As in the File menu.
At any time you can retrieve ALL scanner values by:
1. Right-clicking anywhere in the configuration window, and
2. Selecting Retrieve Scanner Settings.
You can also retrieve settings by clicking on the Send/
Receive button.
This is useful if you want to:
• Copy (upload) the scanner’s settings and save them as a computer file for later
retrieval.
• Ensure that whenever you save ESP settings to the scanner you are not saving any
unwanted changes that you or someone else had made previously in ESP. By first
doing Retrieve Scanner Settings, you eliminate that possibility.
1-8
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 1 Quick Start
1–Quick Start
Step 8 — Compare Scanner Settings
If you want to compare settings in the current scanner sideby-side with those in ESP without changing the ESP values:
1. Under the pull down Options menu check Show Comparison Column.
2. Right-click anywhere in the configuration window.
3. Select Retrieve as Comparison.
After a short pause the scanner’s current settings will be
displayed under the Comparison column. Compare those
settings with the ESP values which are displayed under the
ESP Values column.
For example, if you change Background Color to Black,
but haven’t yet saved this to the scanner, you will see the
dissimilar program and scanner values highlighted in blue.
MS-820 Industrial Bar Code Scanner User’s Manual
1-9
1–Quick Start
Step 9 — Position Scanner and Symbol
Set up a symbol at the scanning distance you will be using in your application.In positioning the scanner and symbols being scanned, consider the following:
• Avoid bright light or IR light from other sources, including other scanners.
• Pitch or skew label or scanner a minimum of ±15° to avoid specular reflection, the
return of direct, non-diffused light.
Note: For additional tips on positioning the scanner and bar code labels, see “Position
Scanner and Bar Code” on page A-24.
30"
(76
2m
Note: The position of the scanners shown here is simply a
suggested one for quick setup. There are variety of ways
to mount the scanner. The important thing is to keep the
test bar code label and scanner in the same relative position as shown here. If your manual is on a CD, look for a
test label on the back of the CD cover.
m)
m)
40
8m
mi
(55
l la
22"
)
be
20
mm
l
3
mi
48
(
"
l
15
lab
19
)
m
mi
m
el
6
0
l
lab
(4
10
16"
el
mi
)
l la
mm
be
305
(
l
"
12
m)
4m
(25
10"
7.5 mil
)
mm mm) 7 mm) mm)
2
2
178 52
7" ( 6" (1 5" (1 4" (10
0"
Figure 1-3 Low Density Ranges
9" m)
9m
(22
15
8"
)
mi
10
mm
l
3
mi
20
(
"
l
5
)
6.7 m )
7.5
mm
m
1
76
7
mi
(1
3" (
l
5 mil
5"
2
.
3
)
0"
mm
"
)
3 . 5 m ) (82
mm
)
40
m
mm
" (1
89
(
2
0
5.5
1
4" (
Figure 1-4 High Density Ranges
Code 39 is the default code type enabled. If you are uncertain as to the symbology
type, enable all codes, by clicking the Utilities menu and enabling Autodiscriminate
under Code Types.
1-10
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 1 Quick Start
1. Position a label in front of an operational scanner.1
20 mil Code 39 Test Symbol
You can also find test symbols on the
back of the Microscan Marketing CD
jacket. The 20 mil refers to the width
of the narrowest bar (e.g., 7.5 mil =
.0075" or .1905 mm).
2. Click the Utilities button.
3. Right-click Read Rate and select Start.
4. Observe rate in terminal window on the right of
the Utilities screen.
5. Move your bar code label towards the scanner and
away from the scanner until the decode rates drop
off in each direction as shown in figure 1-1.
This will give you a sense of the depth of field
(inner and outer ranges) for your symbol’s density
and range.
6. To end test, right-click Read Rate and select the
Stop button.
u
De
p th
of f
ield
Note: If the scanner is in the
default Continuous Read
mode, it will read and beep
repeatedly as long as a readable label remains in the read
range and the read cycle configuration has not changed.
Figure 1-5 Depth of Field
1. If using an I 2/5 label, verify that the number of characters in the label being scanned matches
the code length enabled for the I 2/5 code type (default is 10 and 6). See “Interleaved 2 of 5”
on page 5-14.
MS-820 Industrial Bar Code Scanner User’s Manual
1-11
1–Quick Start
Step 10 — Test Range for Bar Code Label
1–Quick Start
Step 11 — Make Changes to Configuration and Save
To make changes to a configuration setting:
1. Double-click the setting (for example, End of Read Cycle).
2. Place your pointer in the selection box, scroll down to the setting of your choice
and left-click on the setting.
3. Left-click again anywhere in the configuration window to complete the selection.
4. Right-click in the configuration window and select Save to Scanner to implement the command in the scanner. You have 3 choices:
a. Send, No Save. This initializes all changes in active memory. These changes will
be lost if power to the scanner is cycled.
b. Send and Save. This will cause the scanner to beep, indicating that the change
has been implemented and that all changes have been saved to the scanner’s
NOVRAM for power-on, except factory settings.1
c. Advanced/Send and Save, Including Factory. Same as above, except that
changes to factory settings will also be saved for power-on.
Note: For Multidrop setup, see “Multidrop Communications” on page A-32.
1. Consult your model specific user’s manual for a list of factory settings.
1-12
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter
Communications
2
Host Port Parameters ..............................................................................2-4
Auxiliary Port............................................................................................2-5
This section tells how to setup communications parameters with the host and an auxiliary terminal.
In addition, the options for auxiliary port connections are fully explored.
With Microscan’s ESP-MP™ (Easy Setup Program) configuration changes can be made
in the ESP-MP menus, then sent and saved to your scanner. The user can also send
serial commands to the scanner via the ESP’s Terminal window.
Note: The characters NULL <> and , can only be entered through embedded menus,
not through ESP or serial commands.
MS-820 Industrial Bar Code Scanner User’s Manual
2-1
2–Communications
Chapter Contents
2–Communications
Communications by ESP
Click this button to bring
up the Communications
menu.
To change a setting,
double-click the
setting and use your
curser to scroll
through the options.
Communications by Serial Command
Command Title
Host Port Parameters
Auxiliary Port Parameters
Comm. Status Request
2-2
cmds
Format
Ka
<Kabaud,parity,stop bits,data bits>
<Kyaux port mode,baud,parity,stop bits,data
Ky
bits,daisy chain status,daisy chain ID>
KT? <KT?>
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 2 Communications
Communications by Embedded Menu
In addition to ESP-MP, Microscan’s scanners have an embedded menu that can be
accessed from the terminal window within ESP or a separate terminal program. See
for instructions on using the embedded menus. For older, slower computers, the
embedded menus might be a quicker method of communicating with your scanner.
Send a <D> command from your terminal to bring up the main menu:
2–Communications
Press the return key (CR) to see the communications menu:
For information on accessing the embedded menus, see “Embedded Menus” on page 19.
MS-820 Industrial Bar Code Scanner User’s Manual
2-3
Host Port Parameters
Host Port Parameters
2–Communications
Baud Rate, Host Port
Definition:
The rate at which the scanner and host transfer data back and forth.
Usage:
Can be used to transfer data faster or to match host port settings.
Serial Cmd:
<Kabaud rate,parity,stop bits,data bits>
Default:
9600
Options:
0 = 600
1 = 1200
2 = 2400
3 = 4800
4 = 9600
5 = 19.2 K
6 = 38.4 K
7 = 57.6 K
8 = 300 K
Parity, Host Port
Definition:
An error detection routine in which one data bit in each character is set to
1 or 0 so that the total number of 1 bits in the data field is even or odd.
Usage:
Only changed if necessary to match host setting.
Serial Cmd:
<Kabaud rate,parity,stop bits,data bits>
Default:
Even
Options:
0 = None
1 = Even
2 = Odd
Stop Bits, Host Port
Definition:
One or two bits added to the end of each character to indicate the end
of the character.
Usage:
Only changed if necessary to match host setting.
Serial Cmd:
<Kabaud rate,parity,stop bits,data bits>
Default:
One
Options:
0 = One
1 = Two
Data Bits, Host Port
Definition:
One or two bits added to the end of each character to indicate the end
of the character.
Usage:
Only changed if necessary to match host setting.
Serial Cmd:
<Kabaud rate,parity,stop bits,data bits>
Default:
One
Options:
0 = One
2-4
1 = Two
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 2 Communications
RS422 Status
Enables RS422. When RS422 is enabled, RS232 is enabled.
Usage:
Only changed if necessary to match host setting.
Serial Cmd:
<Kb status>
Default:
Disabled
Options:
0 = Disabled
2–Communications
Definition:
1 = Enabled
MS-820 Industrial Bar Code Scanner User’s Manual
2-5
Auxiliary Port
Auxiliary Port
2–Communications
As with the host port parameters, the auxiliary terminal’s settings (baud rate, parity,
stop bits, and data bits) must be identical with those of the auxiliary device.
Definition:
An auxiliary port connects the scanner to a remote display or to other
scanners that can display or transfer data.
Usage:
These commands set the communication parameters with the auxiliary
port which can be used to configure menus, send data to the host, display data transmissions originating from the host of the scanner, and
relay data from other scanners set in tandem (daisy chained).
Serial Cmd:
<Kyaux port mode,baud rate,parity,stop bits,data bits,daisy chain ID
status,daisy chain ID>
Auxiliary Port Modes
Definition:
Determines the flow of data between the auxiliary port device(s), the
scanner, and the host.
Serial Cmd:
<Kyaux port mode,baud rate,parity,stop bits,data bits,daisy chain ID
status,daisy chain ID>
Default:
Disabled
Options:
0
1
2
3
4
2-6
=
=
=
=
=
Disabled
Transparent
Half duplex
Full duplex
Daisy chain
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 2 Communications
Transparent Mode
Definition:
• Auxiliary port data to the host is always sent
with a preamble and a postamble.
Scanner
• If the scanner is in a polled mode to the host,
auxiliary port data will still pass through.
• <D> is the only command accepted by the scanner from the auxiliary
port. All other commands will pass through to the host.
Data initiated from the Scanner
• Transmission to the auxiliary port occurs
immediately upon a good read.
Host
• Scan data to the auxiliary port does not include
a preamble or a postamble.
• Communications with the auxiliary port is
always in Point-to-Point protocol, even if the
host is in a polled protocol mode.
Scanner
Data initiated from the Host
• All host data is echoed to the auxiliary port in
unpolled mode.
Aux
Port
Host
Aux
Port
Scanner
Usage:
A common application, in conjunction with handheld scanners, is one
that employs an auxiliary readout to detect mis-applied bar code labels.
Serial Cmd:
<Kyaux port mode,baud rate,parity,stop bits,data bits,daisy chain ID
status,daisy chain ID>
1 = Transparent
MS-820 Industrial Bar Code Scanner User’s Manual
2-7
2–Communications
In Transparent mode data is passed between the auxiliary port and
the host. The scanner buffers data from the auxiliary port and echoes
the keyed data on the auxiliary port.
• Auxiliary port data is passed through to the
Aux
host whenever a return key is pressed at the
Host
Port
auxiliary port or whenever bar code data is
sent. If sent with bar code data, it is processed
on a first-in/first-out basis.
Auxiliary Port
Half Duplex Mode
Definition:
In Half Duplex mode all auxiliary port data and bar code data is sent
directly to the host. Bar code data is displayed on the auxiliary port
screen at the same time the data is sent to the host.
Data initiated from the Auxiliary Port
2–Communications
• Auxiliary port data to the host is ignored if the
scanner is in a polled mode.
Host
• Auxiliary port data or scanned data is sent to
the host whenever it is received.
• Auxiliary port data is not echoed.
• Auxiliary port data to the host is always sent
without a preamble or a postamble.
Aux
Port
Scanner
• <D> is the only command that is accepted by the scanner from the
auxiliary port. All other commands are passed through to the host.
Data initiated from the Scanner
• Scan data is transmitted to the auxiliary port at
the same time it is transmitted to the host.
Host
• Data transmission conforms with all parameters specified in the configuration menu (e.g.,
Preamble, Postamble, End of Read Cycle).
Data is initiated from the Host
• All host data is echoed to the auxiliary port in
unpolled mode.
Aux
Port
Scanner
Host
Aux
Port
Scanner
Usage:
Useful when the user wants bar code data displayed on an auxiliary
screen close to the scanner.
Serial Cmd:
<Kyaux port mode,baud rate,parity,stop bits,data bits,daisy chain ID
status,daisy chain ID>
2 = Half Duplex
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MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 2 Communications
Full Duplex Mode
Definition:
In Full Duplex mode all auxiliary port data and bar code data is sent
directly to the host. Bar code data is not displayed on the auxiliary port
screen.
Data initiated from the Auxiliary Port
Host
Aux
Port
• Auxiliary port data or scanned data is sent to
the host whenever it is received.
• Auxiliary port data is not echoed.
Scanner
• Auxiliary port data to the host is always sent
without a preamble or a postamble.
• <D> is the only command that is accepted by the scanner from the
auxiliary port. All other commands are passed through to the host.
Data initiated from the Scanner
• Scan data is not sent to the auxiliary port.
Host
Aux
Port
Scanner
Data initiated from the Host
• All host data is echoed to the auxiliary port in
unpolled mode.
Host
Aux
Port
Scanner
Usage:
When communication to and from the auxiliary port is required.
Serial Cmd:
<Kyaux port mode,baud rate,parity,stop bits,data bits,daisy chain ID
status,daisy chain ID>
3 = Full duplex
MS-820 Industrial Bar Code Scanner User’s Manual
2-9
2–Communications
• Auxiliary port data to the host is ignored if the
scanner is in a polled mode.
Auxiliary Port
Daisy Chain Mode
2–Communications
Note: See also “Daisy Chain Autoconfigure” on page 2-27.
Definition:
In a daisy chain application, scanners are connected in tandem or
“daisy chain” and decoded data is relayed from one scanner to another
on up to the host.
A master scanner has its host port linked to the host computer and its
auxiliary port linked to the host port of the first “slave” scanner in the
chain. Thereafter, each slave’s auxiliary port is linked to the host port of
the slave that is further from the host in the daisy chain.
Each scanner in the daisy chain can be assigned an ID that accompanies any data that it sends.
Usage:
Useful in applications where:
• A bar code label might be scanned in both ladder and picket fence directions.
• A bar code label may be present on multiple sides of a package.
• Bar code labels are presented at different depths.
Serial Cmd:
<Ky aux port mode,baud rate,parity,stop bits,data bits,daisy chain ID
status,daisy chain ID>
Options:
4 = Daisy chain
Function:
Before the master scanner times out, it checks its auxiliary port for
data. It should be set to wait at least 20 mS for each slave in the daisy
chain. If no data is received within the read cycle timeout, the master
sends a noread message to the host. Otherwise the complete data is
sent.
If for example the master scanner is set to timeout in 120 ms, the first
slave scanner downstream might be set to 100 ms, the next to 80 ms,
and so forth, thus assuring that at least 20 mS elapses between transmissions.a
Daisy-chained scanners can send a series of labels by enabling Multilabel and a common multilabel separator. If the master scanner does not
receive the expected number of labels, noread messages are appended
to the data string to make up the difference between the number of
labels enabled in Multilabel and the number of labels read.
For example, a master and two slave scanners have Number of Labels set
to 3 and Multilabel Separator defined as %. If the master and the first
slave scanner do not find labels, but the next slave scanner registers a good
read, the transmitted results would be: label data % noread % noread.
a. The above example is based on the best case. Other factors such as baud rate, number of characters in
a given symbol, and the number of slaves in the daisy chain can affect timing and may need to be
included in your calculations for complete accuracy.
2-10
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 2 Communications
Conditions:
The conditions for a daisy chain application are
as follows:
1. The master scanner’s trigger must be Serial
or External; the slave scanners’ triggers are
configured for Serial.
2. All scanners are enabled to Daisy Chain
mode.
Host
Slave
Master
4. Each slave scanner in the daisy chain must be set to send its data
no less than 20 mS before its preceding scanner.
5. All but the master scanner must have Postamble enabled and set
to CR (^M) only.
6. All but the master scanner must have their noread messages disabled.
7. If Multilabel is enabled, Multilabel Separator characters must
match in all scanners and Number of Labels must be set to number large enough to include all the labels it may itself read plus the
number of labels that it will be expected to relay to the host or the
next scanner up the line.
8. Symbology ID enable/disable must be the same in all scanners.
9. All but the master scanner must have their diagnostic warning messages disabled.
10. Daisy Chain ID Status enable/disable and the number of characters in Daisy Chain ID must be the same in all scanners.
MS-820 Industrial Bar Code Scanner User’s Manual
2-11
2–Communications
3. Each scanner’s auxiliary port must be connected to the Host port of
its slave scanner.
Auxiliary Port
Aux Port Communications Parameters
As with the host port parameters, the auxiliary terminal’s settings (baud rate, parity,
stop bits, and data bits) must be identical with those of the auxiliary device.Baud
2–Communications
Rate, Aux Port
Definition:
The rate at which the scanner and host transfer data back and forth.
Usage:
Can be used to transfer data faster or match an auxiliary device.
Serial Cmd:
<Kyaux port mode,baud rate,parity,stop bits,data bits,daisy chain ID
status,daisy chain ID>
Default:
9600
Options:
0 = 600
1 = 1200
2 = 2400
3 = 4800
4 = 9600
5 = 19.2 K
6 = 38.4 K
7 = 57.6 K
8 = 300
Parity, Aux Port
Definition:
An error detection routine in which one data bit in each character is
set to 1 or 0 so that the total number of 1 bits in the data field is even
or odd.
Usage:
Only changed if necessary to match host setting.
Default:
Even
Options:
<Ky aux port mode,baud rate,parity,stop bits,data bits,daisy chain ID
status,daisy chain ID>
Serial Cmd:
0 = None
1 = Even
2 = Odd
Data Bits, Aux Port
Definition:
Number of bits in each character.
Usage:
Only changed if necessary to match host setting.
Serial Cmd:
<Kyaux port mode,baud rate,parity,stop bits,data bits,daisy chain ID
status,daisy chain ID>
Default:
Seven
Options:
0 = Seven
2-12
1 = Eight
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 2 Communications
Stop Bits, Aux Port
Allows the user to select the last one or two bits in each character to
indicate the end of the character.
Usage:
Only changed if necessary to match host setting.
Serial Cmd:
<Kyaux port mode,baud rate,parity,stop bits,data bits,daisy chain ID
status,daisy chain ID>
Default:
One
Options:
0 = One
1 = Two
Daisy Chain ID Status
Definition:
Each scanner in a daisy chain can be assigned a one or two character
ID that will appear in front of decoded data and identify its source.
Usage:
Used in a daisy chain setup in cases where the host needs to know
which scanner in a daisy chain setup sent the data.
Serial Cmd:
<Kyaux port mode,baud rate,parity,stop bits,data bits,daisy chain ID
status,daisy chain ID>
Default:
Disabled
Options:
0 = Disabled
1 = Enabled
Note: Enable/disable and length must be the same in all scanners.
Daisy Chain ID
Definition:
A one or two character prefix which identifies the particular daisy chain
scanner from which the data is being sent.
Usage:
Used in a daisy chain setup in cases where the host needs to know
which scanner sent the data.
Serial Cmd:
<Kyaux port mode,baud rate,parity,stop bits,data bits,daisy chain ID
status,daisy chain ID>
Default:
1/
Options:
Any one or two ASCII characters.
MS-820 Industrial Bar Code Scanner User’s Manual
2-13
2–Communications
Definition:
2–Communications
Auxiliary Port
2-14
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter
Protocol
3
Chapter Contents
Protocols are the rules by which devices pass data back and forth. This section
includes the basic options available for data communication, including multidrop and
user-defined options and output data formats.
Note: The characters NULL <> and , can only be entered through embedded menus,
not through ESP or serial commands.
MS-820 Industrial Bar Code Scanner User’s Manual
3-1
3–Protocol
Protocol....................................................................................................3-4
LRC..........................................................................................................3-9
Response Timeout.................................................................................3-10
Intercharacter Delay ..............................................................................3-11
Output Data Format ...............................................................................3-12
Protocol by ESP
Click this button to bring
up the Protocol menu
3–Protocol
To change a setting,
double-click the
setting and use your
curser to scroll
through the options.
Protocol by Serial Command
Command Title
Host Protocol
LRC
Response Timeout
Intercharacter Delay
Preamble
Postamble
Communications Status
Request
3-2
cmds
Kf
Kc
KA
KB
Kd
Ke
Format
<Kfprotocol>
<Kcstatus>
<KAresponse timeout>
<KBintercharacter delay>
<Kdstatus,preamble>
<Kestatus,postamble>
KT?
<KT?>
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 3
Protocol
Protocol by Embedded Menu
For information on accessing the embedded menus, see “Embedded Menus” on page
A-19.
From the Main menu, scroll down through the options and select the following screen:
3–Protocol
MS-820 Industrial Bar Code Scanner User’s Manual
3-3
Protocol
Protocol
Protocols define the sequence and format in which information is transferred between the scanner and the host, or in the case of Multidrop,
between scanners and a concentrator.
Usage:
In general, the point-to-point protocols will work well in most applications. They require no address and must use RS-232 or RS-422 communications standards.
Default:
Point-to-Point
Options:
0 = Point-to-Point
1 = Point-to-Point with RTS/CTS
2 = Point-to-Point with XON/XOFF
3 = Point-to-Point with RTS/CTS & XON/XOFF
4 = Polling Mode D
5 = Multidrop
6 = User Defined
7 = User Defined Multidrop
If selecting one of the options from 0 to 4 (Point-to-Point, Point-toPoint with RTS/CTS, Point-to-Point with XON/XOFF, Point-toPoint with RTS/CTS and XON/XOFF, or Polling Mode D), use the
<Kfprotocol> format.
Option 5 through 7 are special cases and discussed later in this section.
3–Protocol
Definition:
Point-to-Point (standard)
Definition:
Standard Point-to-Point requires no address and sends data to the
host whenever it is available, without any request or handshake from
the host.
Usage:
Used only with RS-232 or RS-422.
Serial Cmd:
<Kf0>
3-4
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 3
Protocol
Point-to-Point with XON/XOFF (Transmitter On/Off)
Definition:
This option enables the host to send the XON and XOFF command as a
single byte transmission command of start (^Q) or stop (^S).
Usage:
If an XOFF has been received from the host, data will not be sent to the
host until the host sends an XON. During the XOFF phase, the host is
free to carry on other chores and accept data from other devices.
Used only with RS-232.
Serial Cmd:
<Kf1>
Point-to-Point with RTS/CTS
Point-to-Point with RTS/CTS (request-to-send/clear-to-send) is a
simple hardware handshaking protocol that allows a scanner to initiate
data transfers to the host.
Usage:
A scanner initiates a data transfer with an RTS (request-to-send) transmission. The host, when ready, responds with a CTS (clear-to-send)
and the data is transmitted. CTS and RTS signals are transmitted over
two dedicated wires as defined in the RS-232 standard.
Used only with RS-232.
Serial Cmd:
<Kf2>
Point-to-Point with RTS/CTS & XON/XOFF
Definition:
This option is a combination of Point-to-Point with RTS/CTS and
Point-to-Point with XON/XOFF.
Usage:
Used only with RS-232.
Serial Cmd:
<Kf3>
Polling Mode D
Definition:
Like Point-to-Point, Polling Mode D requires a dedicated connection
to the host; but unlike Point-to-Point, it requires an address and must
wait for a poll from the host before sending data.
Usage:
When in Polling Mode D, an address of 1 is automatically displayed on
the configuration screen. However, during transmission, a 1C hex poll
address (FS) and a 1D hex select address (GS) are substituted for the 1.
Serial Cmd:
<Kf4>
MS-820 Industrial Bar Code Scanner User’s Manual
3-5
3–Protocol
Definition:
Protocol
Multidrop
Note: See also “Multidrop Communications” on page A-32.
Definition:
Multidrop allows up to 50 devices to be connected to a single RS-485
host, with the scanner assigned an unique address (from 01 to 50).
Usage:
The MS-5000 can be used as a concentrator to a single host port connection.
When Multidrop is selected, the protocol characters for RES, REQ, etc.
are assigned automatically.
Multidrop
Addresses:
Each address has its own separate poll and select address (from 1C to
7F hex).
Options:
01 through 50
Serial Cmd:
If selecting Multidrop (Kf5) an address must be defined and appended
to the command string.
Format: <Kf5,address>
3–Protocol
Note: Scanners linking up to a Microscan MS-5000 multidrop concentrator must be
configured in standard multidrop protocol.
User Defined Point-to-Point
Definition:
User Defined Point-to-Point allows the user to customize the pointto-point protocol.
Usage:
Useful for developing custom protocols in polled or unpolled mode.
Serial Cmd:
<Kf6,RES,address,REQ,EOT,STX,ETX,ACK,NAK,from host>
User Defined Address
Definition:
User Defined is considered to be in a polled mode only if an address
has been assigned.
Serial Cmd:
<Kf6,RES,address,REQ,EOT,STX,ETX,ACK,NAK,from host>
Default:
No address
Options:
Any ASCII character except a null.
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MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 3
Protocol
User Defined Example
Definition:
Example: ACK/NAK protocol can be configured using User Defined.
The scanner will transmit data to the host, when an ACK is received, it
will carry on with its business. If a NAK or response timeout occurs, the
scanner will re-send the data to the host up to 3 more times before
aborting.
Tip: To use User Defined Point-to-Point, first select Point-to-Point
<Kf0> and then User Defined <Kf6>.
Example: To select an unpolled ACK/NAK User Defined protocol with
LRC disabled, send <Kf0><Kf6,,,,,,,^F,^U><Kc0>. ACK and NAK
will be displayed in the menu.
Serial Cmd:
<Kf6,RES,address,REQ,EOT,STX,ETX,ACK,NAK,from host>
Default:
No assignment
Options:
Any ASCII character except a null. Control characters can be used to
define RES through NAK in serial commands.
From Host
This option allows the handshaking protocol to be initiated from the
host, if not configured in an unpolled mode. Messages sent to the host
will include the scanner’s defined protocol. The status of From Host
determines if messages sent from the host to the scanner must include
the defined protocol. If From Host is disabled, the defined protocol is
not included. If From Host is enabled, the defined protocol must be
included.
Serial Cmd:
<Kf6,RES,address,REQ,EOT,STX,ETX,ACK,NAK,from host>
Default:
Disabled
Options:
0 = Disabled
1 = Enabled
MS-820 Industrial Bar Code Scanner User’s Manual
3-7
3–Protocol
Definition:
Protocol
User Defined Multidrop
Definition:
User Defined Multidrop allows the user to customize the polling protocol.
Usage:
This option is used when connecting to a concentrator or other device
that does not match standard multidrop protocol.
If selecting User Defined Multidrop (7), complete the format by
either choosing new parameters or place commas where unchanged
data fields occur.
Serial Cmd:
<Kf7,RES,address,REQ,EOT,STX,ETX,ACK,NAK>
For User Defined Multidrop, first select Multidrop <KF5>, then
User Defined Multidrop <KF7...>.
3–Protocol
Address:
Any single character (02 hex to 7E hex) in the ASCII table can be
assigned as the address character. The character chosen is used as the
poll character and the subsequent ASCII character becomes the select
character. For example, if a ^B (02 hex) is selected as the address, ^C
(03 hex) becomes the select address that the host will use in sending
host select commands.
Note: Any ASCII character except a null (00) and a ^A (01) can be assigned as an
address. Control characters can be used to define RES through NAK in serial commands. (See “Communication Protocol Commands” on page A-18.)
Note: Definitions of commands in User Defined and User Defined Multidrop must
be duplicated in host applications to enable poll and select sequences to execute correctly during transmission.
Note: Typically, parameters in User Defined Multidrop are defined by first enabling
Multidrop, then enabling User Defined Multidrop. This pre-loads multidrop characters into the parameters. Then changes are made to individual characters to match
the host or other requirements.
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Chapter 3
Protocol
LRC
(Longitudinal Redundancy Check)
Definition:
An error-checking routine that verifies the accuracy of transmissions. It
is the exclusive OR of all characters following the STX (start of text) up
to and including the ETX (end of text). What this means is that the
binary representation of all the characters in a transmissions are cumulatively added in a column and each resulting odd integer is assigned a
1 and each even integer a 0 (two 1s = 0, two 0s = 0, a 1 and a 0 = 1).
The extra LRC character is then appended to the transmission and the
receiver (usually the host) performs the same addition and compares
the results.
Usage:
Used when extra data integrity is required.
Serial Cmd:
<Kcstatus>
Default:
Disabled
Options:
0 = Disabled
1 = Enabled
3–Protocol
MS-820 Industrial Bar Code Scanner User’s Manual
3-9
Response Timeout
Response Timeout
Time the scanner will wait before timing out if ACK, NAK, and ETX are
enabled, and a host response is expected.
Usage:
Only used when a response is required from the host. While in Multidrop, if the scanner does not receive an ACK or NAK from the host
after sending polled data, it will act on a fault. The scanner can be set
to wait indefinitely by setting Response Timeout to zero.
Serial Cmd:
<KAresponse timeout>
Default:
12mS
Options:
0 to 255 (A zero (0) setting causes an indefinite wait.)
3–Protocol
Definition:
3-10
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 3
Protocol
Intercharacter Delay
Definition:
The time interval in milliseconds between individual characters transmitted from the scanner to the host.
Usage:
Intercharacter Delay is only used where a host cannot receive data
quickly enough and there is enough time between labels to allow data
to be completely transferred. It is rarely used since any setting other
than zero will slow down communications. For example, a 200 setting
will result in a 1/5 second delay between each character that is transmitted.
Serial Cmd:
<KB intercharacter delay>
Example: To change Intercharacter Delay to 30 ms, send <KB30>.
Default:
0
Options:
0 to 255 (in milliseconds). Zero (0) causes no delay between characters.
3–Protocol
MS-820 Industrial Bar Code Scanner User’s Manual
3-11
Output Data Format
Output Data Format
Up to four user defined ASCII characters, including control characters can be defined
and added to the front or end of the data string that is sent from the scanner to the
host.
Preamble Characters
3–Protocol
Preamble Status
Definition:
Define a one to four character data string that can be added to the front
of the decoded data.
Usage:
Useful for identifying and controlling incoming data. For example, defining the preamble as a carriage return and a line feed causes each
decoded message to be displayed of on its own line.
Serial Cmd:
<Kdstatus,preamble character(s)>
Default:
Disabled
Options:
0 = Disabled
1 = Enabled (within any protocol)
Preamble Character(s)
Serial Cmd:
<Kdstatus,preamble character(s)>
Default:
^M corresponding to: carriage return/null/null/null.
Options:
Within a Serial Command
To enter control characters within a serial command, hold down the
control key while typing the desired character.
Example: <Kd1,CNTL-m> to enter ^M
Within an Embedded Menu
Control characters entered on the command line are displayed in the
menu as mnemonic characters, such as: <CR><NUL><NUL><NUL>.
To enter a control character from within an embedded menu, first type
in a space (with the space key). This has the effect of allowing the control key to be recognized as a part of the control character. Next hold
down the control key while typing the desired character.
Example: Space CNTL-m to enter ^M.
3-12
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 3
Protocol
Postamble Characters
Postamble Status
Definition:
Allows the user to enable or disable up to four postamble character(s)
that can be added to the end of the decoded data.
Usage:
Useful for identifying and controlling incoming data. For example, defining the postamble as a carriage return and a line feed causes each
decoded message to be displayed of on its own line.
Serial Cmd:
<Kestatus,postamble character(s)>
Default:
Enabled
Options:
0 = Disabled
1 = Enabled (within any protocol)
Postamble Character(s)
<Kestatus,postamble character(s)>
Default:
^M^J. Corresponds to carriage return/line feed/null/null, as displayed
in the menu.
Options:
Up to four user-defined ASCII character, including control characters.
Within a Serial Command
To enter control characters within a serial command, hold down the
control key while typing the desired character.
Example: <Ke1,CNTL-m CNTL-j> to enter ^M^J.
Within an Embedded Menu
Control characters entered on the command line are displayed in the
menu as mnemonic characters, such as: <CR><LF><NUL><NUL>
To enter a control character from within an embedded menu, first type
in a space (with the space key). This has the effect of allowing the control key to be recognized as a part of the control character. Next hold
down the control key while typing the desired character.
Example: Space CNTL-m Space CNTL-j to enter ^M^J.
MS-820 Industrial Bar Code Scanner User’s Manual
3-13
3–Protocol
Serial Cmd:
3–Protocol
Output Data Format
3-14
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter
Read Cycle/Trigger
4
Chapter Contents
Trigger Mode ...........................................................................................4-4
External Trigger State ............................................................................4-10
End of Read Cycle .................................................................................4-11
Multilabel................................................................................................4-14
Note: The characters NULL <> and , can only be entered through embedded menus,
not through ESP or serial commands.
MS-820 Industrial Bar Code Scanner User’s Manual
4-1
4–Read Cycle/Trig-
Read cycles and triggering modes are at the heart of bar code scanning. After you’ve
established communications and completed basic read rate testing, you will need to
address the spatial and timing parameters associated with your application. In a typical operation a bar-coded item moves along a line past a scanner. A sensor or timer
activates a read cycle during which the scanner actively searches for bar code symbols. You will need to decide how to initiate the read cycle and how and when to end
it. This section addresses these issues.
Read Cycle/Trigger by ESP
Click this Button to bring
up the Read Cycle/
Triggering menu
To change a setting,
double-click the
setting and use your
curser to scroll
through the options.
4–Read Cycle/Trig-
Read Cycle/Trigger by Serial Command
Command Title
Triggering Mode
End of Read Cycle
Serial Trigger Character
External Trigger State
Decodes Before Output
Multilabel
4-2
Cmd
Kg
Kh
Ki
Kj
Km
KL
Format
<Kgtrigger mode,filter time>
<Khmode,timeout>
<Kicharacter>
<Kjexternal trigger state>
<Kmdecodes before output>
<KLnumber of labels,multilabel
separator>
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 4 Read Cycle/Trigger
Read Cycle/Trigger by Embedded Menu
For information on accessing the embedded menus, see “Embedded Menus” on page
A-19.
From the Main menu, scroll down through the options until you reach the following
screen:
4–Read Cycle/Trig-
MS-820 Industrial Bar Code Scanner User’s Manual
4-3
Trigger Mode
Trigger Mode
Definition:
The type of trigger event that will initiate the read cycle.
Serial Cmd:
<Kg trigger mode,trigger filter duration>
Default:
Continuous Read
Options:
0
1
2
3
=
=
=
=
Continuous Read
Continuous Read 1 Output
External Level
External Edge
4 = Serial Data
5 = Serial Data & External Edge
Continuous Read
In Continuous Read, trigger input options are disabled, the scanner
is always in the read cycle, and it will attempt to decode and transmit
every scan crossing a label.
When To Output and Noread options have no affect on Continuous
Read.
Usage:
Continuous Read is useful in testing bar code label readability or
scanner functions. It is not recommended for normal operations.
Serial Cmd:
<Kg 0>
4–Read Cycle/Trig-
Definition:
4-4
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 4 Read Cycle/Trigger
Continuous Read 1 Output
Definition:
In Continuous Read 1 Output the scanner self-triggers whenever it
decodes a new bar code label or a timeout occurs.
If End Of Read Cycle is set to Timeout and the label doesn't change,
the scanner will repeat the output at the end of each timeout period.
For example, if Timeout is set to one second, the scanner sends the
label data immediately and repeats the output at intervals of one second for as long as the label continues to be scanned.
If End Of Read Cycle is set to New Trigger, the scanner will send the
current label data immediately, but send it only once. A new label
appearing in the scanner’s range will be read and sent immediately provided it is not identical to the previous label read.
Usage:
Continuous Read 1 Output can be useful in applications where it is
not feasible to use a trigger and all succeeding labels contain different
information. It is also effective in applications where the objects are
hand presented.
Serial Cmd:
<Kg1>
Caution: In automated environments, Continuous Read 1 Output is not recommended because there is no one to verify that a label was missed.
Note: If Trigger is set to Continuous Read 1 Output, Number of Labels will
default back to 1 (if set to any number greater than 1).
4–Read Cycle/Trig-
MS-820 Industrial Bar Code Scanner User’s Manual
4-5
Trigger Mode
External Trigger Level
Definition:
External Trigger Level allows the read cycle (active state) to begin
when a trigger (change of state) from an external sensing device is
received. The read cycle endures until the object moves out of the sensor range and the active trigger state changes again.
Usage:
This mode is effective in an application where the speeds of the conveying apparatus are variable and the time the scanner spends scanning
each object is not predictable. It also allows the user to determine if a
noread has occurred.
Initiate Read Cycle:
Object # 1, moving in front of the detector
beam, causes a change in the trigger state,
initiating the read cycle.
Associated waveforms assume
External Trigger State is set
to Active On.
End Read Cycle:
The same object, moving out of the detector
beam, causes another change in the trigger
state, ending the read cycle.
Figure 4-1 Trigger Level
4–Read Cycle/Trig-
Serial Cmd:
<Kg2>
Important: Level and Edge apply to the active logic state (Active Off (IOFF)or Active
On (ION)) that exists while the object is in a read cycle, between the rising edge and
falling edge. Rising edge is the trigger signal associated with the appearance of an
object. Falling edge is the trigger signal associated with the subsequent disappearance of the object.
4-6
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 4 Read Cycle/Trigger
External Trigger Edge
Definition:
External Trigger Edge, as with Level, allows the read cycle (active
state) to begin when a trigger (change of state) from an external sensing
device is received. However, the passing of an object out of sensor range
does not end the read cycle. The read cycle ends with a good read output
or, depending on End of Read Cycle setting, a timeout or new trigger
occurs.
Usage:
This mode is highly recommended in any application where conveying
speed is constant or if spacing, object size, or timeouts are consistent.
Initiate Read Cycle:
Object # 1, moving in front of the detector
beam, causes a change in the trigger state,
initiating the read cycle.
Initiate Second Read Cycle:
Associated waveforms assume
External Trigger State is set
to Active On.
Object # 2, moving in front of the detector
beam, causes another change in the trigger
state. This signal initiates a new read cycle
and ends the previous read cycle unless
Timeout is enabled and a good read or timeout has not occurred.
Figure 4-2 Trigger Edge
Serial Cmd:
<Kg3>
MS-820 Industrial Bar Code Scanner User’s Manual
4-7
4–Read Cycle/Trig-
Important: Level and Edge apply to the active logic state (Active Off (IOFF) or
Active On (ION)) that exists while the object is in a read cycle, between the rising
edge and falling edge. Rising edge is the trigger signal associated with the appearance
of an object. Falling edge is the trigger signal associated with the subsequent disappearance of the object.
Trigger Mode
Serial Data
Definition:
In Serial Data, the scanner accepts an ASCII character from the host
or controlling device as a trigger to start a read cycle. A Serial Data
trigger behaves the same as an External Edge trigger.
Serial commands are entered inside corner brackets, such as <t>.
Usage:
Serial Data is effective in a highly controlled environment where the
host knows precisely when the object is in the scan zone. It is also useful in determining if a noread has occurred.
Serial Cmd:
<Kg4>
Serial Data or External Edge
In this mode the scanner accepts either a serial ASCII character or an
external trigger pulse to start the read cycle.
Usage:
Serial Data or External Edge is seldom used but can be useful in an
application that primarily uses an external sensing device but occasionally needs to be manually triggered.
An auxiliary terminal can be connected to the aux port so the user can
send the serial trigger character through the scanner to the host.
Serial Cmd:
<Kg5>
4–Read Cycle/Trig-
Definition:
4-8
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 4 Read Cycle/Trigger
Trigger Filter Duration
Definition:
Trigger Filter Duration can prevent trigger bounce from falsely triggering the scanner by limiting the time in which trigger pulses can be
received.
Usage:
Trigger Filter Duration is useful where trigger bounce could cause
false triggers.
Serial Cmd:
<Kg trigger mode,trigger filter duration>
Default:
78 (x 128 µs = 9984 µs)
Options:
0 to 65535 (corresponding to 0 to 2.048 s in 31.25 µs steps)
Good Decode Reads
Definition:
The number of decodes (from 1 to 31) required per label before a
label’s decoded data is sent. It requires the scanner to successfully
decode a label a designated number of times (not necessarily consecutively) before it is sent. If it doesn’t achieve the number of good reads
during the read cycle, then a noread will be sent.
Note: Higher settings will decrease throughput speed.
Usage:
This is a very useful feature to increase reliability of reads for symbologies that do not have internal error checking such as Pharmacode.
Serial Cmd:
<Km decodes before output>
Default:
1
Options:
1 to 31
MS-820 Industrial Bar Code Scanner User’s Manual
4-9
4–Read Cycle/Trig-
Note: When setting up, be sure to determine if the scanner’s scan rate is capable of
scanning your longest label the required number of times.
External Trigger State
External Trigger State
Definition:
When enabled for Active On (ION) (Positive) the triggering device
imposes a current on the optoisolator to activate the read cycle. When
enabled for Active Off (IOFF) (Negative) the triggering device interrupts the current to the optoisolator to activate the read cycle.
Usage:
Allows users to select the trigger state that will operate with their systems.
(If using the Microscan object detector, use Active Off.)
Serial Cmd:
<Kjexternal trigger state>
Default:
Active On (Positive)
Options:
0 = Active Off (Negative)
1 = Active On (Positive)
4–Read Cycle/Trig-
Note: External Level, External Edge, or Serial Data or Edge trigger mode must
be enabled for External Trigger to take effect.
4-10
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 4 Read Cycle/Trigger
End of Read Cycle
Definition:
The read cycle is the time during which the scanner will attempt to read
and decode a bar code symbol.
Serial Cmd:
<Kh end of read cycle status,timeout>
End of Read Cycle Status
A read cycle can be terminated by a new trigger, a timeout, or a combination of both.
ESP:
Double-click on End of Read Cycle Mode and make a selection.
Serial Cmd:
<Kh end of read cycle status,timeout>
Default:
Timeout
Options:
0 = Timeout
1 = New Trigger
2 = Timeout & New Trigger
Note: When operating in Continuous Read or Continuous Read 1 Output, the
scanner is always in the read cycle.
MS-820 Industrial Bar Code Scanner User’s Manual
4-11
4–Read Cycle/Trig-
Definition:
End of Read Cycle
Timeout
Definition:
Timeout ends the read cycle, causing the scanner to stop reading
labels and send the label data or noread message when the time set in
Timeout elapses (times out), if When to Output is set to End of
Read Cycle.
If in Continuous Read 1 Output, a timeout initiates a new read cycle
and allows the same label to be read again.
With either External Edge, Serial Data, or Serial Data & Edge
enabled, a timeout ends the read cycle and label data or a noread message is sent to the host.
With External Level enabled, the read cycle does not end until the falling edge trigger or a timeout occurs. The next read cycle does not begin
until the next rising edge trigger.
Typically used with Serial or Edge and Continuous One.
It is effective in highly controlled applications when the maximum
length of time between objects can be predicted. It assures that a read
cycle ends before the next bar-coded object appears, giving the system
extra time to decode and transmit the data to the host.
4–Read Cycle/Trig-
Usage:
4-12
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 4 Read Cycle/Trigger
New Trigger
Definition:
New Trigger ends the current read cycle and initiates a new one when
a new trigger occurs. New Trigger refers only to a “rising edge” trigger.
With either External Edge, Serial, or Serial or Edge enabled, an edge
or serial trigger ends a read cycle and initiates the next read cycle.
In the case of External Level, a falling edge trigger ends the read
cycle but the next read cycle does not begin until the occurrence of the
next rising edge trigger.
(See figure 4-1 on page 4-6 and figure 4-2 on page 4-7.)
Usage:
New Trigger is an effective way to end a read cycle when objects
move past the scanner at irregular intervals (not timing dependent).
Note: When New Trigger is enabled, Laser On/Off will have no effect. When
noreads occur, the laser will remain on.
Timeout or New Trigger
Definition:
Timeout or New Trigger is identical to Timeout, except that a timeout or a new trigger (whichever occurs first) ends the read cycle.
Usage:
Useful in applications that require an alternative way to end the read
cycle. For example, if an assembly line should stop completely or the
intervals between objects are highly irregular.
Timeout Duration
Timeout Duration is the time span of the read cycle and is represented in 10 mS increments. It is used in conjunction with External
Edge or Serial Trigger.
Usage:
It is useful in many tightly controlled applications which require a read
cycle to end before the next object appears and therefore need the
flexibility of a timeout adjustment.
Serial Cmd:
<Khend of read cycle status,timeout>
Default:
100 (Corresponds to one second or 1000 ms.)
Options:
0 to 65535. (Divide any positive number entered by 100 to determine
the time in seconds.)
Note: A minimum setting of 2 is recommended.
Note: Timeout or Timeout or New Trigger under End of Read Cycle must be
enabled for Timeout Duration to take effect.
MS-820 Industrial Bar Code Scanner User’s Manual
4-13
4–Read Cycle/Trig-
Definition:
Multilabel
Multilabel
Definition:
Multilabel allows the user to define up to 12 bar code labels that can
be read in a single read cycle.
Usage:
Multilabel is commonly used in shipping applications where a shipping
label contains individual bar codes for part number, quantity, etc. This
feature allows one trigger to pick up all the labels. AIAG and UCC/EAN128 are two application standards that address this need.
Conditions
Allows you to choose the number of different labels that can be read in
a single trigger event. The following conditions apply:
1. All noread messages are posted at the end of the data string.
2. If more than one label is within the scan beam at the same time,
label data may not be displayed in the order of appearance.
3. If Matchcode Type is set to Sequential or if Trigger is set to
Continuous Read 1 Output, Number of Labels will default to 1
(if set to any number greater than 1).
4. The maximum number of characters in any one bar code (other
than PDF417) is 64. For PDF417 it’s 2710.
5. The maximum number of characters in a single scan line is 102
(Code 39).
6. The maximum number of characters for all labels is 788, including
preamble, separators, and LRC.
4–Read Cycle/Trig-
Table 4-1 Maximum Number of Characters per Numbers of Labels
4-14
Number
of labels
Non-PDF Labels
Cumulative
Maximum
1-5
6
7
8
9
10
11
12
333
398
463
528
593
658
723
788
PDF Labels
Maximum
Cumulative
per label
Maximum
2710
13563
2320
13961
2030
14225
1804
14448
1622
14615
1474
14758
1350
14869
1246
14972
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 4 Read Cycle/Trigger
Number of Labels
Definition:
Number of Labels is the number of different labels that can be read in
a single read cycle.
Serial Cmd:
<KLnumber of labels,multilabel separator>
Default:
1
Options:
1 to 12
4–Read Cycle/Trig-
MS-820 Industrial Bar Code Scanner User’s Manual
4-15
Multilabel
4–Read Cycle/Trig-
Multilabel Separator
Definition:
The character that’s inserted between each label scanned when Multilabel is set to any number greater than 1.
Usage:
Used to delimit or separate data fields with a user defined character.
ESP:
Double-click on Separator and select a character in the popup window.
Serial Cmd:
<KLnumber of labels,multilabel separator>
Note: If Multilabel Separator has been changed to any other character than the default comma and you wish to re-define the separator as
a comma, use ESP (as shown below) or the embedded menu.
Default:
, (comma)
Options:
Any available ASCII character, except < > NUL.
4-16
MS-820 Industrial Bar Code Scanner User’s Manual
Codes
Chapter
5
Chapter Contents
Narrow Margins .......................................................................................5-5
Symbology ID ..........................................................................................5-6
Background Color ....................................................................................5-7
Code 39 ...................................................................................................5-8
Codabar .................................................................................................5-11
Interleaved 2 of 5 ...................................................................................5-14
UPC/EAN ...............................................................................................5-16
PDF417..................................................................................................5-19
Code 128 ...............................................................................................5-21
UCC/EAN-128 .......................................................................................5-22
Code 93 .................................................................................................5-25
AIAG ......................................................................................................5-26
Autodiscriminate ....................................................................................5-29
This section describes the various bar code symbol types that can be read and
decoded by the scanner.
Code 39 is enabled by default. To enable all codes, right-click Autodiscrimination
under Code Type in the Utilities menu and select Enable, or send a <P> serial command to the scanner from the Terminal window.1
Note: The characters NULL <> and , can only be entered through embedded menus,
not through ESP or serial commands.
See www.aimusa.org/standards for additional information about codes.
5–Codes
1. If using an I 2/5 label, verify that the number of characters in the label being scanned
matches the code length enabled for the I 2/5 code type (default is 10 and 6).
MS-820 Industrial Bar Code Scanner User’s Manual
5-1
Code Types by ESP
Click this button to bring
up the Code Types
menu.
5–Codes
To change a setting,
double-click the
setting and use your
curser to scroll
through the options.
5-2
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 5 Codes
Code Types by Serial Command
Command Title
cmds
Narrow Margins/Symbology ID
Background Color
Ko
<Konarrow margins status,symbology ID status>
Kx
<Kxbackground color>
<Kpstatus,check digit status,check digit output status,large
intercharacter gap,fixed code length status,fixed code
length,full ASCII>
<Kqstatus,start & stop match status,start & stop output status,large intercharacter gap,fixed code length status,fixed code
length,check digit type,check digit output>
<Krstatus,check digit,check digit output,length 1,length 2>
<Ksstatus,EAN status,supplementals
status,separator char.>
<K[status,[usused],fixed code length status,fixed code length>
<Ktstatus,fixed length,length>
<Kt,,,EAN-128 status,output format,separator status,separator character,application identifier parentheses,record padding>
<Kt,,,UCC/EAN-128 status,output format,application record
separator status,application record separator character,application record brackets,application record padding
<K!status,fixed code length status,fixed code length>
<KZAIAG status, ID1, status1, ID2, status2, ID3, status3, ID4,
status4, *ID5a,ID5b,ID5c, status5, ID6, status6, ID7, status7, ID8,
status8, ID9, status9, ID9, status10, ID11, status11, ID12,
status12>
Code 39
Kp
Codabar
Kq
Interleaved 2 of 5
Kr
UPC/EAN
Ks
PDF417
Code 128
K[
Kt
EAN-128
Kt
UCC/EAN-128
(subset of Code 128)
Kt
Code 93
K!
AIAG
KZ
Code Type Status
Request
Format
KW?
<KW?>
5–Codes
MS-820 Industrial Bar Code Scanner User’s Manual
5-3
Code Types by Embedded Menu
5–Codes
For information on accessing the embedded menus, see “Embedded Menus” on page
A-19.
From the Main menu, scroll down through the options until you reach the following
screens:
5-4
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 5 Codes
Narrow Margins
Definition:
Usage:
Serial Cmd:
Default:
Options:
Allows the scanner to read symbols with quiet zones less than 8 times
the width of the narrow bar element. “Quiet zone” is the space at the
leading and trailing ends of a symbol. Each quiet zone can be as narrow
as only five times the width of the narrow bar element when Narrow
Margins is enabled.
Used when the leading and trailing edges of the symbols are smaller
than the standard margin or other objects encroach into the margins.
<Konarrow margins status,symbology identifier>
Disabled
0 = Disabled
1 = Enabled
Note: Do not use Narrow Margins with Large Intercharacter Gap enabled in Code
39 or Codabar.
5–Codes
MS-820 Industrial Bar Code Scanner User’s Manual
5-5
Symbology ID
Symbology ID
Definition:
Symbology ID is an AIM standard prefix character that identifies the bar
code type.
When enabled, the scanner analyzes and identifies the bar code symbology and adds a three character identifying prefix to the data:
1. ] (close bracket character) indicating the presence of a symbology ID
2. A, C, E, F, G, I, L, Q
A = Code 39; C = Code 128 or UCC/EAN-128; E = UPC/EAN; F =
Codabar; G = Code 93; I = I–2 of 5; L = PDF417; Q = Pharma Code
3. Modifier, a single number indicating the status of the check digit
character:
Usage:
Serial Cmd:
Default:
Options:
If Check Digit is not enabled, the output is 0 (Col. 1). If Check Digit
and Check Digit Output are enabled, the output is as shown in Column 2. If Check Digit is enabled, but Check Digit Output is disabled
(Col. 3), the output is as shown in Col. 4, which is the sum of Col. 2 and
Col. 3.
Used when host needs to know the symbology type and how it’s
decoded.
<Ko narrow margins status,symbology identifier>
Disabled
0 = Disabled
1 = Enabled
Example: For Code 39, if Check Digit and Check Digit Output are both enabled, a
1 will be sent; if Check Digit Output is disabled, a 3 (sum of column 1 and column 2)
will be sent.
Table 5-1 Symbology Identifier Option Values
Symbology
Column 1
No check
character
A
C
C
E
F
G
I
L
Q
Code 39
Code 128
UCC/EAN-128
UPC/EAN
Codabar
Code 93
I–2 of 5
PDF417
Pharma Code
0
0
0
0
0
0
0
0
0
5–Codes
Symbology
I.D.
5-6
Column 2
Check digit
Output
enabled
1
0
0
0
1
0
1
0
0
Column 3
Check digit
Output
disabled
2
0
0
0
2
0
2
0
0
MS-820 Industrial Bar Code Scanner User’s Manual
Column 4
Sum of
Column
2 and 3
3
0
0
0
3
0
3
0
0
FNC 1
Character
in first
position
1
Chapter 5 Codes
Background Color
Definition:
Usage:
Allows the user to choose which symbol background (white or black)
the scanner can read.
If the background is darker than the symbol, then enable black background.
Typically the background is white; but on PCBs for example, they can
be black.
ESP:
Serial Cmd:
Default:
Options:
<Kx background color>
White
0 = White
1 = Black
5–Codes
MS-820 Industrial Bar Code Scanner User’s Manual
5-7
Code 39
Code 39
Definition:
Usage:
An alphanumeric code with unique start/stop code patterns, composed
of 9 black and white elements per character, of which 3 are wide.
Code 39 is considered the standard for non-retail symbology.
Code 39 Status
Serial Cmd:
Default:
<Kp status,check digit status,check digit output status,large intercharacter gap,fixed code length status,fixed code length,full ASCII set>
Enabled
Options:
Note: This is the only code type enabled by default.
0 = Disabled
1 = Enabled
Check Digit Status (Code 39)
Serial Cmd:
Default:
Options:
<Kp status,check digit status,check digit output,large intercharacter
gap,fixed code length status,fixed code length,full ASCII set>
Disabled
0 = Disabled
1 = Enabled
Check Digit Output (Code 39)
Definition:
Usage:
Serial Cmd:
5–Codes
Default:
Options:
When enabled, the check digit character is read and compared along
with the label data. When disabled, label data is sent without the check
digit.
Note: With Check Digit Output and an External or Serial trigger
option enabled, an invalid check digit calculation will cause a noread
message to be transmitted at the end of the read cycle.
Check digit Output, added to the bar code symbol, provides additional security.
<Kp status,check digit status,check digit output,large intercharacter
gap,fixed code length status,fixed code length,full ASCII set>
Disabled
0 = Disabled
1 = Enabled
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MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 5 Codes
Large Intercharacter Gap (Code 39)
Definition:
Usage:
Serial Cmd:
Default:
Options:
When enabled, the scanner can read symbols with gaps between bar
code characters that exceed three times (3x) the narrow element
width.
Large Intercharacter Gap is helpful for reading symbols that are
printed out of specification.
Caution: Do not use Large Intercharacter Gap with Narrow Margins enabled since a large intercharacter gap (over 3x) could cause a
narrow margins (5x) to be interpreted as an intercharacter gap.
<Kp status,check digit status,check digit output,large intercharacter
gap,fixed code length status,fixed code length,full ASCII set>
Disabled
0 = Disabled
1 = Enabled
Fixed Code Length Status (Code 39)
Definition:
Serial Cmd:
Default:
Options:
When enabled the scanner will check the label length against the code
length field. If disabled any length would be considered a valid label.
<Kp status,check digit status,check digit output,large intercharacter
gap,fixed code length status,fixed code length,full ASCII set>
Disabled
0 = Disabled
1 = Enabled
Fixed Code Length (Code 39)
Definition:
Usage:
Serial Cmd:
Default:
Options:
Specifies the exact number of characters that the scanner will recognize
(this does not include start and stop and check digit characters). The
scanner ignores any code not having the specified length.
Fixed Code Length helps prevent truncations and increases data
integrity by ensuring that only one label length will be accepted.
<Kp status,check digit status,check digit output,large intercharacter
gap,fixed code length status,fixed code length,full ASCII set>
10
1 to 128
5–Codes
MS-820 Industrial Bar Code Scanner User’s Manual
5-9
Code 39
Full ASCII Set (Code 39
Definition:
Usage:
Serial Cmd:
5–Codes
Default:
Options:
Standard Code 39 encodes 43 characters; zero through nine, capital “A”
through capital “Z”, minus symbol, plus symbol, forward slash, space,
decimal point, dollar sign and percent symbol. When Full ASCII Set is
enabled, the scanner can read the full ASCII character set, from 0 to
255.
Must be enabled when reading characters outside the standard character set (0-9, A-Z, etc.)
User must know in advance whether or not to use Full ASCII Set
option. Since Full ASCII Set requires two code words to encode one
character, it is less efficient.
<Kp status,check digit status,check digit output,large intercharacter
gap,fixed code length status,fixed code length,full ASCII set>
Disabled
0 = Disabled
1 = Enabled
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MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 5 Codes
Codabar
Definition:
Usage:
Codabar is a 16-character set (0 through 9, and the characters $, :, /, .,
+, and –) with start/stop codes and at least two distinctly different bar
widths.
Used in photo-finishing and library applications. Formerly used in some
medical applications but not typically used in newer applications.
Codabar Status
Serial Cmd:
Default:
Options:
<Kqstatus,start & stop match,start & stop match output,large intercharacter gap,fixed code length status,fixed code length,check digit
type,check digit output>
Disabled
0 = Disable
1 = Enabled
Start & Stop Match (Codabar)
Definition:
Usage:
Serial Cmd:
Default:
Options:
Requires the Codabar start and stop characters (a, b, c, or d) to match
before a valid read can occur.
Used to increase security of symbology.
<Kqstatus,start & stop match,start & stop match output,large intercharacter gap,fixed code length status,fixed code length,check digit
type,check digit output>
Enabled
0 = Disabled
1 = Enabled
Start & Stop Output (Codabar)
Definition:
Usage:
Serial Cmd:
Default:
Options:
Causes the start and stop characters to be transmitted with bar code
data.
Used to verify matching.
<Kq status,start & stop match,start & stop match output,large intercharacter gap,fixed code length status,fixed code length,check digit
type,check digit output>
Enabled
0 = Disabled
1 = Enabled
5–Codes
MS-820 Industrial Bar Code Scanner User’s Manual
5-11
Codabar
Large Intercharacter Gap (Codabar)
Definition:
Usage:
Serial Cmd:
Default:
Options:
Instructs the scanner to read symbols with gaps between characters
exceeding three times the narrow element width.
It is helpful for reading symbols that are printed out of specification.
Caution: Do not use Large Intercharacter Gap with Narrow Margins enabled since enabling Large Intercharacter Gap (over 3x)
could cause a narrow margins (5x) to be interpreted as an intercharacter gap.
<Kqstatus,start & stop match,start & stop output match,large intercharacter gap,fixed code length status,fixed fixed code length,check
digit type,check digit output>
Disabled
0 = Disabled
1 = Enabled
Fixed Code Length Status (Codabar)
Definition:
Serial Cmd:
Default:
Options:
When enabled, the scanner will check the label length against the fixed
code length field. If disabled any length would be considered a valid
label.
<Kq status,start & stop match,start & stop match output,large intercharacter gap,fixed code length status,fixed code length,check digit
type,check digit output>
Disabled
0 = Disabled
1 = Enabled
Fixed Code Length (Codabar)
Definition:
Usage:
Serial Cmd:
5–Codes
Default:
Options:
Specifies the exact number of characters that the scanner will recognize
(this does not include start and stop and check digit characters). The
scanner ignores any code not having the specified length.
Fixed Code Length helps prevent truncations and increases data
integrity by ensuring that only one symbol length will be accepted.
<Kq status,start & stop match,start & stop match output,large intercharacter gap,fixed code length status,fixed code length,check digit
type,check digit output>
10
1 to 128
Note: Fixed Code Length Status must be enabled for Fixed Code Length to take
effect.
Note: Because of symbology limitations, setting Code Length to any number less
than four will produce undetermined results.
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MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 5 Codes
Check Digit Type (Codabar)
Definition:
Serial Cmd:
Default:
Options:
Modulus 16:
NW 7:
Allows the user to select the check digit type Codabar will use.
<Kqstatus,start & stop match,start & stop match output,large intercharacter gap,fixed code length status,fixed code length,check digit
type,check digit output>
Disabled
0 = Disabled
1 = Modulus 16
2 = NW 7
3 = Both
Used in the photo-finishing market.
Used in Japanese markets.
Check Digit Output (Codabar)
Definition:
Usage:
Serial Cmd:
Default:
Options:
When enabled, the check digit character is sent along with the bar code
data. When disabled, bar code data is sent without the check digit.
For additional security a check digit can be added to the bar code symbol.
<Kq status,start & stop match,start & stop match output,large intercharacter gap,fixed code length status,fixed code length,check digit
type,check digit output>
Disabled
0 = Disabled
1 = Enabled
5–Codes
MS-820 Industrial Bar Code Scanner User’s Manual
5-13
Interleaved 2 of 5
Interleaved 2 of 5
Definition:
Usage:
A dense, continuous, self-checking, numeric symbology. Characters are
paired together so that each character has five elements, two wide and
three narrow, representing numbers 0 through 9, with the bars representing the first character and the interleaved spaces representing the
second character. (A check digit is highly recommended.)
Important: You must set Code Length in order to decode I 2/5 symbols.
It is has been has been popular because it is the most dense code for
printing numeric characters less than 10 characters in length; however
Microscan does not recommend this symbology for any new applications because of inherent problems such as truncation.
Interleaved 2 of 5 Status
Serial Cmd:
Default:
Options:
<Krstatus,check digit status,check digit output status,code length
#1,code length #2,guard bar>
Disabled
0 = Disabled
1 = Enabled
Check Digit Status (Interleaved 2 of 5)
Definition:
Usage:
Serial Cmd:
Default:
Options:
An error correcting routine in which the check digit character is added.
It is typically not used but can be enabled for additional security in
applications where the host requires redundant check digit verification.
<Krstatus,check digit status,check digit output status,code length
#1,code length #2>
Disabled
0 = Disabled
1 = Enabled
Check Digit Output (Interleaved 2 of 5)
Definition:
5–Codes
Serial Cmd:
Default:
Options:
5-14
When enabled, a check digit character is sent along with the bar code
data for added data security.
<Krstatus,check digit status,check digit output,code length #1,code
length #2,guard bar>
Disabled
0 = Disabled
1 = Enabled
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 5 Codes
Code Length #1 (Interleaved 2 of 5)
Definition:
Usage:
Serial Cmd:
Default:
Options:
Allows user to define the symbol length. Because I 2/5 is a continuous
code, it is prone to substitution errors. Hence, a code length must be
defined and a bar code symbol must contain an even number of digits.
Note: If a start, stop or check digits are used, they are not included in
the code length count.
With I 2/5, two code lengths can be defined. When using only one symbol length in an application, setting Code Length #2 to 0 (zero) to
ensure data integrity is recommended.
<Kr status,check digit status,check digit output status,code length
#1,code length #2,guard bar>
10
2 to 128, even.
Since I 2/5 characters are paired, code length must be set to an even
number. If Check Digit is enabled, add 2 to your code length. For
example, if your symbol is 10 characters plus a check digit, then enable
Code Length for 12.
Note: Typically, when printing an I 2/5 label with an odd number of digits, a 0 will be added as the first character.
Code Length #2 (Interleaved 2 of 5)
Definition:
Usage:
Serial Cmd:
Default:
Options:
Allows user to define a second code length for I–2 of 5.
If using a second symbol, a zero or any even code length from 2 to 64
may be specified. If not using a second symbol, set Code Length #2 to
0 to ensure data integrity.
<Kr status,check digit status,check digit output status,code length
#1,code length #2,guard bar>
6
2 to 128, even.
Since I 2/5 characters are paired, code length must be set to an even
number. If Check Digit is enabled, add 2 to your code length. For
example, if your symbol is 10 characters plus a check digit, then enable
Code Length for 12.
Note: Typically, when printing an I 2/5 label with an odd number of digits, a 0 will be added as the first character.
5–Codes
MS-820 Industrial Bar Code Scanner User’s Manual
5-15
UPC/EAN
UPC/EAN
Definition:
Usage:
UPC (Universal Product Code) is a fixed length numeric, continuous
symbology. UPC can have two or five digit supplemental bar code data
following the normal code. The U.P.C., Version A (U.P.C., A) symbol is
used to encode a 12 digit number. The first digit is the number system
character, the next five are the manufacturer number, the next five are
the product number, and the last digit is the checksum character.
When enabled, the scanner will read UPC version A and UPC version E
only.
Used primarily in POS application in the retail industry. It is commonly
used with Microscan scanners in applications in combination with
Matchcode when there is a need to verify that the right product is
being placed in the right packaging.
UPC Status
Serial Cmd:
Default:
Options:
<KsUPC status,EAN status,supplementals status,separator status,separator character>
Disabled
0 = Disabled
1 = Enabled
EAN Status
Definition:
Usage:
Serial Cmd:
5–Codes
Default:
Options:
EAN is a subset of UPC. When enabled, the scanner will read UPC version A, UPC version E, EAN 13, and EAN 8. It also appends a leading
zero to UPC version A symbol information and transmits 13 digits. If
transmitting 13 digits when reading UPC version A symbols is not
desired, disable EAN.
Note: The extra character identifies the country of origin.
EAN is the European version of the UPC symbology and is used in European market applications.
Note: UPC must be enabled for EAN to take effect.
<KsUPC status,EAN status,supplementals status, separator status,
separator character>
Disabled
0 = Disabled
1 = Enabled
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MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 5 Codes
Supplementals Status (UPC/EAN)
Definition:
Usage:
Serial Cmd:
Default:
Options:
Disabled:
Enabled:
Required:
A supplemental is a 2 or 5 digit symbol appended to the main label.
When set to Enabled or Required, the scanner reads supplemental
bar code data that has been appended to the standard UPC or EAN
codes.
Reads Supplementals typically used in publications and documentation.
<Ks UPC status,EAN status,supplementals status,separator status,
separator character,>
Disabled
0 = Disabled
1 = Enabled
2 = Required
UPC Supplementals will not be decoded.
When enabled, the scanner will try to decode a main and a supplemental. However, if a supplemental is not decoded, at the end of the read
cycle, the main will be sent by itself. The UPC main and supplemental
symbols are considered to be one symbol and will be treated as such.
When set to Required and either the main or supplemental symbol is
not read, a single noread condition results. The UPC main and supplemental symbols are treated as one symbol.
For example, if Supplementals is set to Required, Separator is
enabled, and an asterisk is defined as the UPC separator character, then
the data will be displayed as: MAIN * SUPPLEMENTAL.
Note: Under no circumstances will supplemental symbol data be sent without a main
symbol.
Note: If additional symbols—other than the main or supplemental—will be read in the
same read cycle, Number of Labels should be set accordingly.
Separator Status (UPC/EAN)
Definition:
Usage:
Serial Cmd:
Default:
Options:
Allows the user to insert a character between the standard UPC or EAN
code and the supplemental code when Supplementals is set to
Enabled or Required.
Allows user to distinguish between the main and Supplemental symbols.
<Ks UPC status,EAN status,supplementals status,separator status,separator character>
Disabled
0 = Disabled
1 = Enabled
5–Codes
MS-820 Industrial Bar Code Scanner User’s Manual
5-17
UPC/EAN
Separator Character (UPC/EAN)
Definition:
Usage:
Serial Cmd:
Default:
Options:
Allows the user to change the separator character from a comma to a
new character.
As required by the application.
<KsUPC status,EAN status,supplementals status,separator status,separator character>
, (comma)
Any ASCII character
Note: If Separator Character has been changed to any other character and you
wish to re-define the separator as a comma, you will need to use ESP or the embedded menu.
Note: Whenever Separator Character is defined as a comma (,) sending a <Ks ?>
command will return the current definitions including the separator character comma
which will appear between two serial separator commas.
Supplementals Type (UPC/EAN)
Definition:
Usage:
Serial Cmd:
Default:
Options:
Both:
5–Codes
2 Char Only:
5 Char Only:
Allows the user to select 2 character or 5 character supplements, or
both.
As required by symbology used in application.
<Ks UPC status,EAN status,supplementals status,separator status,separator character,supplemental type>
Both
0 = Both
1 = 2 char only
2 = 5 char only
Either 2 character or 5 character supplementals will be considered
valid.
Only two character supplementals will be considered valid.
Only five character supplementals will be considered valid.
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MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 5 Codes
PDF417
Definition:
Usage:
Serial Cmd:
A two-dimensional, multi-row (3 to 90), continuous, variable length
symbology that has high data capacity for storing up to 2700 numeric
characters, 1800 printable ASCII characters, or 1100 binary character
per symbol. Each symbol character consists of 4 bars and 4 spaces in a
17-module structure.
Used in applications where a large amount of information (over 32
characters) needs to be encoded within a symbol, typically where the
symbol is transported from one facility to another. For example, an
automobile assembly line might use a single label with multiple fields of
information that will be read at several stations along the way, without
reference to a database.
<K[ status,[usused],fixed code length status,fixed code length>
PDF417 Status
Serial Cmd:
Default:
Options:
<K[ status,[usused],fixed code length status,fixed code length>
Disabled
0 = Disabled
1 = Enabled
Fixed Code Length (PDF417)
Definition:
Usage:
When enabled, the PDF label must contain the same number of characters as the code length setting before it can be considered a good
decode. The scanner will ignore any code not having the specified
length.
Used to increase data integrity by ensuring that only one label length
will be accepted.
5–Codes
MS-820 Industrial Bar Code Scanner User’s Manual
5-19
PDF417
Fixed Code Length Status (PDF417)
Serial Cmd:
Default:
Options:
<K[ status,[usused][usused],fixed code length status,fixed code
length>
Disabled
0 = Disabled
1 = Enabled
Fixed Code Length (PDF417)
Definition:
Serial Cmd:
Default:
Options:
Specifies the exact number of characters the scanner will recognize.
<K[ status,[usused][usused],fixed code length status,fixed code
length>
10
1 to 2710
5–Codes
Note: Fixed Code Length Status must be enabled for Fixed Code Length to take
effect.
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MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 5 Codes
Code 128
Definition:
Usage:
A very dense alphanumeric symbology. It encodes all 128 ASCII characters, it is continuous, has variable length, and uses multiple element
widths measured edge to edge.
Code 128 is a smaller code useful in applications with tight spots and
high security needs.
Code 128 Status
Serial Cmd:
Default:
Options:
<Kt status,fixed code length status,fixed code length>
Disabled
0 = Disabled
1 = Enabled
Fixed Code Length Status (Code 128)
Definition:
Serial Cmd:
Default:
Options:
When enabled the scanner will check the label length against the code
length field. If disabled any length would be considered a valid label.
<Kt status,fixed code length status,fixed code length>
Disabled
0 = Disabled
1 = Enabled
Fixed Code Length (Code 128)
Definition:
Usage:
Serial Cmd:
Default:
Options:
It specifies the exact number of characters that the scanner will recognize (this does not include start and stop and check digit characters).
The scanner ignores any code not having the specified length.
Fixed Code Length helps prevent truncations and increases data
integrity by ensuring that only one symbol length will be accepted.
<Kt status,fixed code length status,fixed code length>
10
1 to 128
Note: Fixed Code Length Status must be enabled for Fixed Code Length to take
effect.
5–Codes
MS-820 Industrial Bar Code Scanner User’s Manual
5-21
UCC/EAN-128
UCC/EAN-128
Definition:
Usage:
A subset of Code 128, with extended features.
See the Uniform Code Council, Inc. at www.uc-council.org.
Used as a standard for shipping labels.
Note: Code 128 must be Enabled for UCC/EAN-128 to function.
UCC/EAN-128 Status
Serial Cmd:
Default:
Options:
Enabled:
Required:
<Kt,,,UCC/EAN-128 status,output format,application record separator status,application record separator character,application record
brackets,application record padding>
Note: Code 128 serial command fields for K precede UCC/EAN-128.
Disabled
0 = Disabled
1 = Enabled
2 = Required
If Enabled, the scanner can read labels with or without a function 1
character in the first position.
If set to Required, the label must have a function 1 in the first position
and conform to EAN format in order to decode the bar code symbol.
Output Data Format (UCC/EAN-128)
Definition:
Usage:
Serial Cmd:
Default:
Options:
Standard:
5–Codes
Application
Record:
Offers an option between Standard UCC/EAN-128 and Application
Record format.
Application Record is useful in applications in which the software can
utilize application record formatting to help automate the processing of
its UCC/EAN-128 data.
<Kt,,,UCC/EAN-128 status,output format,application record separator status,application record separator character,application record
brackets,application record padding>
Standard
0 = Standard
1 = Application Record
In Standard UCC/EAN-128 application identifiers and data fields are
sent, but none of the formatting (separators, parentheses, padding)
will be included.
Application Record is a variation of UCC/EAN-128 that allows the user
to define separators between data fields, enclose application identifiers
in parentheses, and enable padding (zeros) for variable length fields.
Note: If an illegal Application Record format is detected, the scanner will process it
as a noread and output a noread message (if enabled).
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MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 5 Codes
Application Record Separator Status (UCC/EAN-128)
Definition:
Serial Cmd:
Default:
Options:
When enabled, a separator character is inserted between application
records.
<Kt,,,UCC/EAN-128 status,output format,application record separator status,application record separator character,application record
brackets,application record padding>
Disabled
0 = Disabled
1 = Enable
Note: Output Format must be set to Application Record before this parameter can
take effect.
Application Record Separator Character (UCC/EAN-128)
Definition:
Serial Cmd:
Default:
Options:
Allows the user to define an ASCII character as an application record
separator.
<Kt,,,UCC/EAN-128 status,output format,application record separator
status,application record separator character,application record
brackets,application record padding>
, (comma)
User Defined ASCII character
Note: Output Format must be set to Application Record before this parameter can
take effect.
Application Record Brackets (UCC/EAN-128)
Definition:
Serial Cmd:
Default:
Options:
When enabled, parentheses ( ) are added to enclose application identifiers.
<Kt,,,UCC/EAN-128 status,output format,application record separator
status,application record separator character,application record
brackets,application record padding>
Disabled
0 = Disabled
1 = Enabled
Note: Output Format must be set to Application Record before this parameter can
take effect.
5–Codes
MS-820 Industrial Bar Code Scanner User’s Manual
5-23
UCC/EAN-128
Application Record Padding (UCC/EAN-128)
Definition:
Serial Cmd:
Default:
Options:
Padding is the insertion of zeros to make up the maximum length of a
variable application record data field, except for the last field which
does not require padding.
When enabled, padding is included. When disabled, padding is omitted.
Note: Padding is never added to fixed length fields or to the last data
field of a label. Enabling or disabling Record Padding will have no
effect on these.
<Kt,,,UCC/EAN-128 status,output format,application record separator
status,application record separator character,application record brackets,application record padding>
Disabled
0 = Disabled
1 = Enabled
5–Codes
Note: Output Format must be set to Application Record before this parameter can
take effect.
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MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 5 Codes
Code 93
Definition:
Usage:
Code 93 is a variable length, continuous symbology employing four element widths. Each Code 93 character has nine modules that may be
either black or white. Each character contains three bars and three
spaces.
Used occasionally in clinical industry.
Code 93 Status
Serial Cmd:
Default:
Options:
<K!status,fixed code length status,fixed code length>
Disabled
0 = Disabled
1 = Enabled
Fixed Code Length Status (Code 93)
Definition:
Serial Cmd:
Default:
Options:
When enabled the scanner will check the label length against the code
length field. If disabled any length would be considered a valid label.
<K! status,fixed code length status,fixed code length>
Disabled
0 = Disabled
1 = Enabled
Fixed Code Length (Code 93)
Definition:
Usage:
Serial Cmd:
Default:
Options:
Specifies the exact number of characters that the scanner will recognize
(this does not include start and stop and check digit characters). The
scanner ignores any code not having the specified length.
Fixed Code Length helps prevent truncations and increases data
integrity by ensuring that only one symbol length will be accepted.
<K! status,fixed code length status,fixed code length>
10
1 to 128
5–Codes
MS-820 Industrial Bar Code Scanner User’s Manual
5-25
AIAG
AIAG
Definition:
Usage:
5–Codes
ESP:
AIAG is not a bar code symbology, but rather a standard that enables a
user to add information to symbols and to filter data according to userdefined identifiers (up to 12).
AIAG is the Automotive Industry Action Group standard and is applicable to all symbologies. If when AIAG is enabled a decoded symbol
has an AIAG ID, it will be counted. Otherwise, the symbol will be
rejected.
Originally created for identifying and sorting automotive parts and processes, AIAG is now used in a wide variety of industries for everything
from quality control to data processing.
From the Code Type menu, scroll to AIAG.
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MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 5 Codes
AIAG Status
Serial Cmd:
Default:
Options:
<KZAIAG status, ID1, status1, ID2, status2, ID3, status3, ID4,
status4, *ID5a,ID5b,ID5c, status5, ID6, status6, ID7, status7, ID8,
status8, ID9, status9, ID9, status10, ID11, status11, ID12, status12>
Disabled
0 = Disabled
1 = Enabled
AIAG Identifiers
Definition:
AIAG has 12 Identifiers, each of which allows you to enter up to 4 ASCII
characters with the exception of ID #5 which allows you enter 3 subidentifiers of 4 characters each.
Serial Cmd:
<KZAIAG status, ID1, status1, ID2, status2, ID3, status3, ID4,
status4, *ID5a,ID5b,ID5c, status5, ID6, status6, ID7, status7, ID8,
status8, ID9, status9, ID9, status10, ID11, status11, ID12, status12>
ESP:
Each Identifier can be individually changed.
1. Double-click on the individual identifier to bring up the
screen shown on the right.
2. Select a character and click
anywhere in the Code Type
ESP window.
Default:
Status1 is Enabled by default. Status 2 through 12 are Disabled.
Options:
1 to 12 status settings; 1 to 12 user-defined identifiers.
Default identifiers for ID1 through ID12 are as follows:
ID1
ID2
ID3
ID4
ID5a
ID5b
ID5c
ID6
ID7
ID8
ID9
ID10
ID11
ID12
N
P
Q
V
S
M
G
H
EZ
EB
ED
EC
EL
EX
The following rules apply:
1. Number of Labels <KZnumber> must be set to the number of AIAG symbols
required per read cycle. (The number of AIAG IDs enabled has no effect.)
2. Any noread messages will be added to the end of the output with no ID prefix. For
example, the following symbols—S123, N456, P678, and Q987—are scanned in
order but the third symbol P678 fails to be decoded. The noread output will
appear at the end of the data array, as follows: S123,N456,Q987,NOREAD.
5–Codes
3. Symbol output is not sorted.
4. Allows any number of symbols with same ID if the data field is different.
MS-820 Industrial Bar Code Scanner User’s Manual
5-27
Autodiscriminate
Autodiscriminate
Although Autodiscriminate is not a configuration command, but it is included here
as a convenient tool for enabling most code types.
Definition:
Usage:
ESP:
Serial Cmd:
Default:
Options:
Enables all available symbology types except PDF417, and UCC/EAN
128. The user may also individually disable/enable each symbology
type.
Commonly used for quick setup mode to detect bar code type. This is
particularly useful for users who might be unfamiliar with their application’s symbology.
Note: It does not alter individual fields such as Start/Stop, Fixed
Length, etc. These need to be setup individually.
In the Utilities menu, right-click on Autodiscriminate and select
Enable.
Note: There will be a few seconds delay while the scanner values are
retrieved.
<P>
Code 39 (only)
<P> Enables all codes except noted above.
<Q> Enable Code 36 only
<R> Enable Codabar only
5–Codes
<S> Enable I 2/5 only
Note: If using an I 2/5 label, verify that the number of characters in the label being
scanned matches the code length enabled for the I 2/5 code type (default is 10 and 6).
5-28
MS-820 Industrial Bar Code Scanner User’s Manual
Scanner Setup
6
Chapter Contents
Scanner Type ..........................................................................................6-4
Scan Speed .............................................................................................6-5
Gain Adjustment ......................................................................................6-6
AGC Sampling .........................................................................................6-7
Transition Sample Counter ......................................................................6-9
This section includes AGC and factory settings such as Focus, Gain, Tracking, and
Scan Speed.
Note: The characters NULL <> and , can only be entered through embedded menus,
not through ESP or serial commands.
MS-820 Industrial Bar Code Scanner User’s Manual
6-1
6–Scanner Setup
Chapter
6–Scanner Setup
Scanner Setup by ESP
Click on this button to
bring up the Scanner
Setup menu.
To change a setting,
double-click on the
setting and use your
curser to scroll
through the options.
6-2
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 6 Scanner Setup
6–Scanner Setup
Scanner Setup by Serial Command
Command Title
comds
Scanner Type (factory)
Scan Speed (factory)
Gain
Transition Counter
Scanner Setup Status
Request
Format
KP
KE
KD
KH
<KPdensity>
<KEscan speed>
<KD gain,AGC mode,AGC min,AGC max>
<KH transition counter status,transition counter threshold>
KU?
<KU?>
Note: To save Factory Settings changes to NOVRAM, send <Zp>, or if in ESP, select
Save to Scanner/Advanced/Send and Save, Including Factory. (See “Save
Active Settings including Factory for Power-on” on page -22.)
MS-820 Industrial Bar Code Scanner User’s Manual
6-3
6–Scanner Setup
Scanner Setup by Embedded Menu
For information on accessing the embedded menus, see “Embedded Menus” on page 19.
From the Main menu, scroll down through the options and select the following screen:
6-4
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 6 Scanner Setup
(factory setting)
Definition:
This field displays the current factory-set zero focus position.
Usage:
This field is READ ONLY, and is set by a qualified technician during factory setup.
Serial Cmd:
<KPdensity>
Default:
The default depends on the type of scanner.
Options:
0 = Low/Medium Density
1 = High Density
MS-820 Industrial Bar Code Scanner User’s Manual
6-5
6–Scanner Setup
Scanner Type
6–Scanner Setup
Scan Speed
Scan Speed
(factory setting)
Definition:
Allows the user to set the number of scans per second by controlling
the spinning mirror motor speed.
Usage:
Typically, to ensure a minimum number of scans, faster scan speeds are
used for fast moving labels and/or longer labels with larger bar widths.
See “Formulas for Number of Decodes” on page A-27.
Note: Scan beams will be moving faster across labels further out in the
scan range since the moving beam is being projected from a spinning
mirror.
Serial Cmd:
<KEscan speed>
Default:
80 (x 10 scans per second)
Options:
35 to 110 (x 10 scans per second)
6-6
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 6 Scanner Setup
(factory setting)
Definition:
Sets a voltage amplitude value for the analog circuitry.
Usage:
Can be useful for fine-tuning gain or when portions of analog signals
spike as in the case of specular reflection or extraneous noise.
Caution: Changes to Gain are typically done by qualified technicians i.
Serial Cmd:
<KD gain,AGC sampling,AGC min,AGC max>
Default:
Default is 45 (nominal). Gain is optimized at the factory before shipment; the default value may not be 45.
Options:
10 to 255
MS-820 Industrial Bar Code Scanner User’s Manual
6-7
6–Scanner Setup
Gain Adjustment
6–Scanner Setup
AGC Sampling
AGC Sampling
Definition:
AGC is the acronym for Automatic Gain Control. AGC increases the
depth of field by attempting to maintain signal strength at a constant
level regardless of the range of the bar code label.
AGC Sampling allows you to specify how automatic gain control sampling will be done.
Serial Cmd:
<KD gain,AGC sampling,AGC min,AGC max>
Default:
Continuous
Options:
0 = Disabled
1 = Leading Edge
2 = Continuous
Disabled
Definition:
When AGC Sampling is set to Disabled, gain levels can only be manually controlled by the Gain command.
Usage:
Disabled is not recommended, but can be useful in certain applications
in which labels do not require a large depth of field.
Leading Edge
Definition:
Finds the leading edge of a symbol by looking for a 40 µs quiet zone followed by the number of transitions, stores the highest value of the
samples, and adjusts the AGC accordingly at the end of the scan.
Usage:
Leading Edge is rarely used, but in some cases can improve scan rates
when labels are skewed and the leading edge of a label is difficult to
locate.
Continuous
Definition:
Samples AGC throughout the scan at the rate averages the sample values, and adjusts the AGC value at the end of the scan.
Usage:
Continuous is the default and the preferred mode for sampling analog
signal amplitude.
6-8
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 6 Scanner Setup
(Read Only)
Definition:
Limits the hardware gain available to the software for the usable range.
Serial Cmd:
<KD gain,AGC sampling,AGC min,AGC max>
AGC Maximum
(Read Only)
Definition:
Limits the hardware gain available to the software for the usable range.
Serial Cmd:
<KD gain,AGC sampling,AGC min,AGC max>
MS-820 Industrial Bar Code Scanner User’s Manual
6-9
6–Scanner Setup
AGC Minimum
6–Scanner Setup
Transition Counter
Transition Counter
Used for both AGC and label detection routines (see Chapter 8, “Outputs”).
Definition:
During the read cycle, the scanner counts the number of bar and space
transitions defined in the Transition Counter. If the count matches or
exceeds the threshold, the scanner will perform AGC routines. The
results of this test are also made known in output messages.See “Bar
Code Output,” on page 8-8 and “Bar Code Output,” on page 8-8.
Transition Counter Status
Serial Cmd:
<KH transition counter status,transition counter threshold>
Default:
Disabled
Options:
0 = Disabled
1 = Enabled
Transition Counter Threshold
Definition:
Determines the number of bar/space transitions that must be read
before a label is considered present and AGC can be resolved.
Usage:
Can be useful in certain application where extraneous objects in the
field of view might require a higher threshold.
Serial Cmd:
<KH transition counter status,transition counter threshold>
Default:
14
Options:
1 to 255
6-10
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter
Matchcode
7
7–Matchcode
Chapter Contents
Overview of Matchcode ...............................................................................7-4
Matchcode Type ..........................................................................................7-5
Master Label Database .............................................................................7-10
New Master Pin .........................................................................................7-15
This section explains the matchcode output functions and the master label database
setup.
Note: The characters NULL <> and , can only be entered through embedded menus,
not through ESP or serial commands.
MS-820 Industrial Bar Code Scanner User’s Manual
7-1
Matchcode by ESP
7–Matchcode
Click this button to bring
up the Matchcode
menu.
To change a setting, double-click the
setting and use your curser to scroll
through the options.
Matchcode by Serial Command
Command Title
Master Label Database Size
cmds
KM
Matchcode Type
Kn
New Master Pin
Store next label scanned to database.a
Enter data to database
Request Master Label information
Delete Master Label
Kz
G
M
M?
M
Format
<KMnumber of master labels>
<Kntype,sequential matching,match start
position,match length,wild card character,
sequence on noread,sequence on mismatch>
<Kzstatus>
<G>
<Mmaster label number,data>
<M?>
<Mmaster label number,>
a. If no number is included, the label will be saved to database number 1.
7-2
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 7 Matchcode
Matchcode by Embedded Menu
For information on accessing the embedded menus, see “Embedded Menus” on page
A-19.
From the Main menu, scroll down through the options and select the following screen:
7–Matchcode
MS-820 Industrial Bar Code Scanner User’s Manual
7-3
Overview of Matchcode
7–Matchcode
Overview of Matchcode
Definition:
With Matchcode you can store master label data in the scanner’s
memory, compare this data against the scanned bar codes, and define
how label data and/or discrete signal output will be directed.
A master label database can be setup for up to 10 master labels. See
“Master Label Database” on page 7-10.
Note: Matchcode will function with multiple labels (see “Multilabel” on
page 4-14); however if Matchcode Type is set to Sequential or if
Triggering Mode is set to Continuous Read 1 Output, Number of
Labels will default back to 1 (if set to any number greater than 1).
Usage:
Matchcode is used in applications to sort, route, or verify data based
on matching the specific bar code label in a variety of ways as defined
in this section. For example, a manufacturer might sort a product based
on dates that are embedded in the bar code.
Steps for entering and using master labels
1. Set Triggering Mode to External or Serial (“Trigger Mode” on page 4-4).
2. Chose the method of label comparison that fits your application (“Matchcode
Type” on page 7-5).
3. Define the output you want to achieve with your matchcode setup:
a. Barcode output (“Bar Code Output” on page 8-8).
b. Discrete output (“Output 1” on page 9-4, “Output 2” on page 9-6, and “Output 3”
on page 9-6).
3. Select the number of master labels you want to create (“Master Label Database
Size” on page 7-10).
4. Decide which of 4 ways you want enter your master label(s):
a. Use ESP to type in master label data directly (“Enter Master Label Data” on page
7-11).
b. Send a serial command with label data in the form of <Mmaster label#,data>.
c. Send a <G> (Scan Next Label as Master Label) command.
d. Enable the New Master Pin command (“New Master Pin” on page 7-15) and
activate a discrete input to store the in the next label scanned as master label.
5. Enter master label data using the method determined in step 4.
7-4
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 7 Matchcode
Matchcode Type
Definition:
Allows the user to choose the way that master labels will be compared
with subsequently scanned labels.
Note: First set Triggering Mode to External or Serial.
ESP:
7–Matchcode
Serial Cmd:
<Kn matchcode type,sequential matching,match start position,
match length,wild card character,sequence on noread,sequence on
mismatch>
Default:
Disabled
Options:
0
1
2
3
Disabled:
Has no effect on operations.
Enabled:
Instructs the scanner to compare labels or portions of labels with the
master label.
Wild Card:
Allows the user to enter user defined wild card characters in the master
label.
Sequential
Matching:
Instructs the scanner to sequence after each match (numeric only) and
compare labels or portions of labels for sequential numbers.
Note: If Matchcode Type is set to Sequential, Number of Labels
will default back to 1 (if set to any number greater than 1).
=
=
=
=
Disabled
Enabled
Sequential
Wild Card
MS-820 Industrial Bar Code Scanner User’s Manual
7-5
Matchcode Type
7–Matchcode
Sequential Matching
Definition:
With Sequential enabled, Sequential Matching determines if a count
is in ascending (incremental) or descending (decremental) order.
Usage:
Useful in tracking product serial numbers that increment or decrement
sequentially.
Serial Cmd:
<Knmatchcode type,sequential matching,match start position,
match length,wild card character,sequence on noread,sequence on
mismatch>
Default:
Increment
Options:
0 = Increment
1 = Decrement
Match Start Position
Definition:
Match Start Position determines the portions of labels that will be
matched by defining the first character in the label (from left to right)
that will be compared with those of the master label, when Matchcode
Type is set to Enabled or Sequential.
Function:
For example, if Match Start Position is set to 3, the first 2 characters
read in the symbol will be ignored and only the 3rd and subsequent
characters to the right will be compared, up to the number of characters specified by Match Length.
Usage:
Match Start Position is useful in defining specific portions of a symbol
for comparisons. For example, if a symbol contains a part number, manufacturing date, and lot code info but the user is only interested in the part
number information. With Match Start Position the scanner can be set
to only sort on the part number and ignore the rest of the characters.
Serial Cmd:
<Knmatchcode type,sequential matching,match start position,
match length,wild card character,sequence on noread,sequence on
mismatch>
Default:
0
Options:
0 to 50
Note: Match Start Position must be set to 1 or greater to enable this feature. A 0
setting will disable this feature.
7-6
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 7 Matchcode
Match Length
Defines the length of the character string that will be compared with
that of the master label when Match Start Position is set to 1 or
greater. when Match Start Position is set to 0, no comparison will
occur.
Usage:
For example, if Match Length is set to 6 in a 10 character symbol, and
Match Start Position is set for 2, only the 2nd through 7th characters
(from left to right) will be compared.
Serial Cmd:
<Knmatchcode type,sequential matching,match start position,
match length,wild card character,sequence on noread,sequence on
mismatch>
Default:
1
Options:
1 to 5050
Wild Card Character
Definition:
Wild Card Character allows a user to define a wild card character as
part of the master label.
Usage:
For example, with Wild Card Character defined as the default asterisk, defining CR*34 as the master label will result in matches for
CR134, CR234, but not CR2345. Entering the wild card at the end of
the master label as in CR* will result in matches for variable label
lengths such as CR1, CR23, CR358, etc.
Serial Cmd:
<Kn matchcode type,sequential matching,match start position,
match length,wild card character,sequence on noread,sequence on
mismatch>
Default:
* (asterisk)
Options:
Any valid ASCII character
MS-820 Industrial Bar Code Scanner User’s Manual
7-7
7–Matchcode
Definition:
Matchcode Type
7–Matchcode
Sequence On Noread
Definition:
When Sequence On Noread is Enabled and Matchcode is set to
Sequential, the scanner sequences the master label on every match or
noread. When disabled, it does not sequence on a noread.
Usage:
Sequence On Noread is useful when the scanner needs to stay in
sequence even if no decode occurs.
Serial Cmd:
<Knmatchcode type,sequential matching,match start position,
match length,wild card character,sequence on noread,sequence on
mismatch>
Default:
Enabled
Options:
0 = Disabled
1 = Enabled
As an example of Sequence on Noread Enabled, consider the following series of
decodes:
Master label
Decoded label
Master label after decode
001
002
003
004
005
006
007
001
002
noread
004
noread
noread
007
002
003
004 (sequenced on noread)
005
006 (sequenced on noread)
007 (sequenced on noread)
008
As an example of Sequence on Noread Disabled, consider the following series of
decodes:
7-8
Master label
Decoded label
Master label after decode
001
002
003
003
004
004
004
001
002
noread
003
noread
noread
004
002
003
003 (not sequenced)
004
004 (not sequenced)
004 (not sequenced)
005
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 7 Matchcode
Sequence On Mismatch
Note: Matchcode must be set to Sequential for this command to function.
When set to Enabled, the master label sequences on every decode,
match or mismatch.
When set to Disabled, the master label will not sequence whenever
consecutive mismatches occur.
Usage:
Enable this parameter if every trigger event should have a decode and
more than one consecutive mismatch may occur.
Disable this parameter if every trigger event should have a decode but
no more than one consecutive mismatch may occur.
Serial Cmd:
<Kn matchcode type,sequential matching,match start position,
match length,wild card character,sequence on noread,sequence on
mismatch>
Default:
Disabled
Options:
0 = Disabled,
1 = Enabled
The scanner will sequence the master to one more/less than the decoded symbol. As
an example of Sequence On Mismatch Enabled, consider the following decodes:
Master label
Decoded label
001
002
003
004
005
006
007
001
002
abc
004
def
ghi
007
Master label after decode
002
003
004 (sequenced on mismatch)
005
006 (sequenced on mismatch)
007 (sequenced on mismatch)
008
As an example of Sequence On Mismatch Disabled, consider the following
decodes:
Master label
Decoded label
001
002
003
004
005
006
006
001
002
abc
004
def
ghi
006
Master label after decode
002
003
004 (sequenced because of previous match)
005
006 (sequenced because of previous match)
006 (not sequenced because of previous mismatch)
007
MS-820 Industrial Bar Code Scanner User’s Manual
7-9
7–Matchcode
Definition:
Master Label Database
Master Label Database
Important: Master Label Database is used only for comparing entire bar codes,
when Sequential and Wild Card are NOT enabled, and Start Position is equal to 0.
7–Matchcode
Master Label Database Overview
Definition:
Allows you to define up to 10 master labels as the master label database, which can be entered by keyboard, scanned-in, displayed, or
deleted by serial or ESP commands.
Usage:
Useful where more than one master label is required, as in a Multilabel
setup, for matching and other matchcode operations.
Master Label Database Size
Definition:
Master Label Data Base Size allows you to select 1 to 10 master
labels for the master label database.
ESP:
Click the Utilities button
to access the master label:
First set the number of master labels you want to include by doubleclicking Database Size and entering the number.
Double-click here and set the
master label database size.
Serial Cmd:
<Mmaster label data base size>
Note: You must follow this command with a save command <A> or
<Z>.
Default:
1
Options:
1 to 10
7-10
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 7 Matchcode
Enter Master Label Data
Definition:
ESP:
Allows you to enter master label data for a specific master label index
number (1 to 10), provided the index number is not larger than the
number of labels enabled by the Master Label Database Size (see
page 7-10). For example, if Master Label Database Size is set to 2,
you will not be able to enter data for labels 3 through 10.
1. Open the Utilities menu.
7–Matchcode
2. Set the number of
master labels you want
to create in Database
Size.
3. Double-click on each
label number you want
to setup and copy or
type in your data.
4. With your cursor in the
label row you have
just edited, right-click
and choose Send or
Send Save.
Serial Cmd:
<Mmaster label number,master label data>
Default:
1, blank
Options:
1 to 10, data (any combination of ASCII text up to the maximum indicated
in “Maximum Characters for Master Label Database” on page 7-12).
For example, to enter data for master label 9, after making certain that
master label database size is enabled for 9 or more labels (see “Master
Label Database Size” on page 7-10), send <M9,data>.
Caution: Since the total number of characters available for the master label data
base is2045, changes to the Master Label Data Base Size will re-allocate the number of characters available for each master label and could cause existing master
labels to be deleted (except master label #1 unless it also exceeds the size limitation).
The table below specifies the maximum number of characters available to each label
according to the number of master labels defined, from 1 through 10. See “Master
Label Database Size” on page 7-10.
MS-820 Industrial Bar Code Scanner User’s Manual
7-11
Master Label Database
7–Matchcode
Table 7-1 Maximum Characters for Master Label Database
Master Label
Number
#1
#2
#3
#4
#5
#6
#7
#8
#9
#10
Maximum
Characters
2045
1022
681
510
408
340
291
254
226
203
Request Master Label DataRequest All Master Label Data
Serial Cmd:
<Mmaster label number?>
This will display data in the master label number you indicated. For
example, to request master label #5, enter <M5?>. The scanner transmits master label #5 data in brackets in the following format: <KM5/
.....>. If no master label data available, the output will be: <KM5,>.
Serial Cmd:
<M?>
This command will return master label data for all labels enabled (up to 10).
ESP:
Access the same as “Enter Master Label Data” on page 7-11.
7-12
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 7 Matchcode
Delete Master Label Data
Definition:
ESP:
You can directly delete the master label data by serial command or ESP.
1. Open the Utilities menu.
2. Select a label # under Edit Labels in Master Label Database.
3. Double-click on each label number you want to delete.
4. Delete text in the text block.
5. Change Database Size accordingly.
<Mmaster label number,>
To delete a master label, enter the database number and a comma,
but leave the data field empty. For example, to delete master label
#5, send the following <M5,>. The command is entered with a blank
master label data field which tells the scanner to delete the selected
master label from the database.
Default:
(no data)
Options:
Any combination of ASCII text up to the maximum indicated in
“Maximum Characters for Master Label Database” on page 7-12.
MS-820 Industrial Bar Code Scanner User’s Manual
7-13
7–Matchcode
Serial Cmd:
Master Label Database
7–Matchcode
Store Next Label Scanned as Master Label1
Definition:
After you’ve set the size in the database (“Master Label Database Size”
on page 7-10), you can order the scanner to scan-in the next label as
the master label for any given master label number.
Serial Cmd:
<G master label number>
To store the next label scanned as master label #1, send: <G> or
<G1>.
To store next label scanned as the master label for any other master
label database number, send: <G master label number [1-10]>.
For example, <G5> will cause the next label scanned to be entered as
master label #5.
Default:
(no data)
1. While not strictly a configuration command, <G> is included here because it is so closely
related to other master label commands.
7-14
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 7 Matchcode
New Master Pin
After New Master Pin is enabled, a pulse can be received on the new
master pin which will cause the scanner to record the next decoded bar
code label(s) as the new master label(s).
It is important to note that the enabling New Master Pin does not in
itself cause a master label to be recorded. The master pin must then be
activated momentarily (for a minimum of 10 ms) before a master label
can be scanned into memory. (See .)
Usage:
Some applications require the line worker to change the master label.
This can be done by installing a switch at the location of the scanner. It
is very common to have a keyed switch so that accidental switching
does not occur.
ESP:
In the Matchcode menu, select New Master Pin, double-click on Disabled and select Enabled.
Serial Cmd:
<Kzstatus>
Default:
Disabled
Options:
0 = Disabled
1 = Enabled
After New Master Pin has been enabled and the pin activated, decodes will be saved
in the master database beginning with master label #1. If the scanner is configured for
a multilabel read cycle (Number of Labels is greater than 1), the remaining decodes
will be saved in each consecutive master label location. For example, if Number of
Labels is set to 3 and New Master Pin is then activated, at the end of the next read
cycle, the decoded bar code labels will be saved as master labels 1, 2, and 3.
MS-820 Industrial Bar Code Scanner User’s Manual
7-15
7–Matchcode
Definition:
7–Matchcode
New Master Pin
7-16
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter
Outputs
8
Chapter Contents
This section explains the commands for controlling data and beeper outputs.
Note: The characters NULL <> and , can only be entered through embedded menus,
not through ESP or serial commands.
MS-820 Industrial Bar Code Scanner User’s Manual
8-1
8–Outputs
Output Data by Embedded Menu ............................................................8-3
Bar Code Output ......................................................................................8-5
Partial Output ...........................................................................................8-8
Noread Message .....................................................................................8-9
Bad Bar Code Message.........................................................................8-10
No Bar Code Message ..........................................................................8-11
Beeper Status ........................................................................................8-12
Serial Verification ...................................................................................8-13
Operation Command Output..................................................................8-15
Outputs by Serial Command
Command Title
Noread Message
Bar Code Output
Laser
Serial Verification
Beeper
Partial Output
No Bar Code
Bad Bar Code
Operation Command Output
cmds
Format
Kk <Kkstatus,message>
Kla <Klstatus,when to output>
<KClaser on/off status,laser framing status,laser off
KC
percentage,laser on percentage>
<KSserial command echo status,serial command beep
KS
status,control/hex output>
Ku <Kustatus>
KY <KYstatus,start postion,length>
KN <KNstatus,message>
K’
<K’status,message>
K/ <K/status>
a. Lower case L
8–Outputs
Outputs by Embedded Menu
For information on accessing the embedded menus, see “Embedded Menus” on page
A-19.
From the Main menu, scroll down through the options and select the following screen:
8-2
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 8 Outputs
Output Data by ESP Menu
Click this button to bring
up the Outputs menu.
MS-820 Industrial Bar Code Scanner User’s Manual
8–Outputs
To change a setting,
double-click the setting and use your
curser to scroll through
the options.
8-3
Message Output
The following flow chart explains the logic paths taken for Noread, Bad Bar Code
and No Bar Code outputs.
Note: When Transition Counter Status is
enabled, the scanner will test for a minimum
number of bar and space transitions. If that
minimum threshold is met, a Bad Bar Code
message is sent; otherwise a No Bar Code
message is sent.
Start of
read cycle
Scans until end
of read cycle
Does the
scanner decode
the symbol?
Yes
No
8–Outputs
Is
Transition
Sample Status
enabled?
No
Scanner
send Noread
message
(if enabled)
Yes
Scanner
sends the
Bad Bar Code
message
(if enabled)
Yes
Is
Transition Sample
Threshold
met?
No
Scanner
Scanner
outputs
sendsthe
the
No
NoBar
Label
Code
message
message
(if(ifenabled)
enabled)
End of
read cycle
Figure 8-1 Output Message Flow
8-4
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 8 Outputs
Noread Message
Definition:
Usage:
When enabled, and if no bar code label has been decoded before timeout or the end of the read cycle, the noread message will be transmitted to the host.
Used in applications where the host needs serial verification that a label
has not been read and especially useful in new print verification.
Noread Status
Serial Cmd:
Default:
Options:
<Kkstatus,message>
Enabled
0 = Disabled
1 = Enabled
Noread Message
Definition:
8–Outputs
Serial Cmd:
Default:
Options:
Any combination of ASCII characters can be defined as the noread
message.
<Kkstatus,message>
NOREAD
0 to 7 ASCII characters.
Note: Noread Message will only be transmitted if Bar Code Output is set to
Match, Mismatch or Good Read.
Noread Message can be set to any ASCII characters except NULL <> and ,
(comma).
MS-820 Industrial Bar Code Scanner User’s Manual
8-5
Bad Bar Code Message
Bad Bar Code Message
Definition:
Usage:
When enabled, a message is sent to the host when a label is detected
but not decoded. See “Transition Counter Threshold” on page 6-10.
The Bad Bar Code output is tied to the transition counter. If during a
read cycle no symbol is decoded and the required setting for the Transition Sample Threshold is met, a Bad Bar Code message will be
sent to the host. See “Output Message Flow” on page 8-4.
Useful in verifying the presence of a bar code label that has not been
decoded.
Bad Bar Code Status
Serial Cmd:
Default:
Options:
<K’status,message>
Disabled
0 = Disabled
1 = Enabled
8–Outputs
Bad Bar Code Message
Serial Cmd:
Default:
Options:
<K’status,message>
BADCODE
Up to seven ASCII characters (except NUL)
The Bad Bar Code output is tied to the transition counter. If during a
read cycle no symbol is decoded and the required setting for the Transition Sample Threshold is met, a Bad Bar Code message will be
sent to the host.
8-6
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 8 Outputs
No Bar Code Message
Definition:
Usage:
When enabled, sends a message to the host whenever an object is
detected but no bar code label is detected. See “Transition Counter
Threshold” on page 6-10.
The No Bar Code output is tied to the transition counter. If during a
read cycle no symbol is decoded and the required setting for the Transition Sample Threshold is NOT met, a No Bar Code message will be
sent to the host. See “Output Message Flow” on page 8-4.
Useful in determining if an object has an attached bar code label.
No Bar Code Status
Serial Cmd:
Default:
Options:
<KNstatus,message>
Disabled
0 = Disabled
1 = Enabled
No Bar Code Message
<KNstatus,message>
NOLABLE
Up to seven ASCII characters (except NUL)
MS-820 Industrial Bar Code Scanner User’s Manual
8–Outputs
Serial Cmd:
Default:
Options:
8-7
Bar Code Output
Bar Code Output
Note: Bar Code Output relates to data and should not to be confused with
Outputs 1, 2, and 3 listed in the Outputs Parameters which describe output states
and functions.
Bar Code Output Status
Definition:
8–Outputs
Usage:
Serial Cmd:
Default:
Options:
Defines the conditions under which decoded bar code labels are transmitted to the host.
Useful when the host needs bar code data only under certain conditions.
<Kloutput status,when to output>
Good Read
0 = Disabled
1 = Match
2 = Mismatch
3 = Good Read
Note: Bar Code Output Status if set to Match or Mismatch will not take effect
unless Matchcode Type is enabled and a master label is loaded into memory.
Disabled
Definition:
Usage:
When set to Disabled, the scanner will not transmit any data that is
generated during a read cycle (bar codes, noreads, etc.).
It is useful when an application only needs to use the discrete outputs
and can allow the scanner to do the decision-making. When Disabled,
the host does not need the bar code data and the communication lines
are used only for setup and status checks.
Match
Definition:
Usage:
8-8
When set to Match, the scanner transmits bar code data whenever a
bar code matches a master label. However, if Matchcode Type is Disabled, it transmits on any good read.
Note: A noread can still be transmitted if Enabled.
Match is used in an application that requires specific bar code information and needs to sort, route or verify based on matching the specific
bar code data.
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 8 Outputs
Mismatch
Definition:
Usage:
With Mismatch enabled, the scanner transmits bar code data whenever the bar code data information does NOT match the master label.
Note: A noread can still be transmitted if enabled.
Mismatch is typically used as a flag within the host system to prevent
an item from being routed in the wrong container.
Good Read
Definition:
Usage:
With Good Read enabled, the scanner transmits bar code data on any
good read regardless of Matchcode Type setting.
Note: A noread can still be transmitted if enabled.
Good Read is used when an application requires all bar code data to
be transmitted. It’s typically used in tracking applications in which
each object is uniquely identified.
When to Output Bar Code Data
Serial Cmd:
Default:
Options:
This command allows the user to choose when bar code data can be
sent to the host.
<Kloutput status,when to output>
As Soon As Possible
0 = As Soon As Possible
1 = End of Read Cycle
8–Outputs
Definition:
As Soon As Possible
Definition:
Usage:
Enabling As Soon As Possible causes bar code data to be sent to the
host immediately after a bar code has been successfully decoded.
Note: More than one decode might in fact be required to qualify as a
good decode, depending on how Decodes Before Output is set.
As Soon As Possible is useful in applications in which bar code data
needs to be moved quickly to the host, typically when the host is making decisions based on bar code data.
MS-820 Industrial Bar Code Scanner User’s Manual
8-9
Bar Code Output
End of Read Cycle
Definition:
Enabling End of Read Cycle means that bar code data does not get
sent to the host until the read cycle ends with a timeout or new trigger.
End of read cycle
Start of read cycle
Read cycle Duration
Host
activates trigger
This is when host
expects output
Figure 8-2 Read Cycle
End of Read Cycle is useful in timing-based systems in which the host
is not ready to accept data at the time it is decoded.
8–Outputs
Usage:
8-10
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 8 Outputs
Laser Control
Laser On/Off Status
Definition:
Usage:
Serial Cmd:
Default:
Options:
When enabled, the laser is ON only during the read cycle. When disabled, the laser operates continuously.
Laser On/Off extends the life of the laser. It is useful where there are
significant time gaps between symbols. It also provides visual confirmation of a read cycle duration and minimizes laser exposure to people.
<KC laser on/off status,laser framing status,laser off percentage,laser on percentage>
Disabled
0 = Disabled,
1 = Enabled
Laser Framing Status
Definition:
Usage:
To adjust laser framing, click the Laser Control button, and Laser On/Off arrows up
or down as shown here.
Scan beam direction
Laser Off
Time
Laser On
Time
ESP Laser
Framing Control
Figure 8-3 Laser
Framing Pattern
MS-820 Industrial Bar Code Scanner User’s Manual
8-11
8–Outputs
Serial Cmd:
Default:
Options:
Sets the percentage of time the laser is ON during each scan so that
only a selected portion of the scan width is effectively scanned.
This is useful to avoid highly reflective objects, for filtering out
unwanted signals and avoiding the wrong symbols.
<KC laser on/off status,laser framing status,laser off percentage>
Disabled
0 = Disabled, 1 = Enabled
Laser Control
Note: Because scan widths are not always perfectly symmetrical, the most effective
way to setup laser framing is to experiment with the Laser On Percentage and
Laser Off Percentage commands until you get the best results.
Laser Off Percentage
Definition:
Serial Cmd:
Default:
Options:
Percentage of time that the laser is OFF during the scan width sweep.
When Laser Framing is disabled, the laser is ON during the full scan.
When Laser Framing is enabled, the laser remains OFF from the start
of the scan and remains OFF for the specified percentage of the scan.
Important: The combined values of Laser Off Percentage and Laser
On Percentage cannot exceed 100 which is the duration of one scan.
<KC laser on/off status,laser framing status,laser off percentage,laser on percentage>
20
1 to 80
8–Outputs
When setting up Laser Framing in ESP-MP, use the Laser Off Percentage and
Laser Framing On Percentage arrows to constrain or expand the laser framing
area.
Laser On PercentageWhen setting up Laser Framing in ESP-MP, use the
Definition:
Serial Cmd:
Default:
Options:
Percentage of time that the laser is ON during the scan width sweep.
Whenever the Laser Off Percentage of the laser beam has expired,
the Laser On Percentage begins and remains ON for the specified
percentage of the scan.
Duration of laser on time, in increments of 1/100th of the total scan
width sweep.
Important: The combined values of Laser Off Percentage and Laser
On Percentage cannot exceed 100 which is the duration of one scan.
<KC laser on/off status,laser framing status,laser off percentage,laser
on percentage>
80
20 to 100
Laser Off Percentage and Laser Framing On Percentage arrows to constrain or
expand the laser framing area.
8-12
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 8 Outputs
Serial Verification
Allows the user to verify configuration command status.
Serial Command Echo Status
Definition:
Function:
Usage:
Default:
Options:
Serial Command Beep Status
Definition:
Function:
Usage:
Serial Cmd:
Default:
Options:
Causes the scanner to beep once whenever a K command is entered to
indicate that the command was accepted and processed.
If an invalid command is entered, the scanner beeps 5 times to indicate
an invalid entry. However, this does not necessarily mean that all data
fields have been entered incorrectly. Only one bad field needs to be
found in order to activate the 5 beep response.
Used to audibly verify the acceptance and validity of a command.
<KSserial command echo status,serial command beep status,control/hex output>
Disabled
0 = Disabled
1 = Enabled
MS-820 Industrial Bar Code Scanner User’s Manual
8-13
8–Outputs
Serial Cmd:
When enabled, a configuration command received from the host is echoed back to the host with the resultant settings.
If a command with multiple fields is processed, some of the fields may
have been processed properly while others were not. The changes will
appear in the string echoed back so that the user will know which fields
did or did not change.
This command is useful in removing any doubt about the scanner’s
interpretation of any configuration command.
For example, if the current preamble is “SOM” and <Kd1, START> is
entered, the scanner will echo back <Kd1, SOM> since the attempted
entry “START” exceeds the four character limit for that command.
Therefore it is rejected and the existing “SOM” message is echoed back
and remains the preamble message.
<KSserial command echo status,serial command beep status,control/hex output>
Disabled
0 = Disabled
1 = Enabled
Serial Verification
Control/Hex Output
Definition:
Usage:
Serial Cmd:
8–Outputs
Default:
Options:
Determines the response to an Serial Command Echo or status
request command.
When set to Control, two characters are transmitted to represent a
non-displayable character. For example, a carriage return will be shown
as the two characters: ^M.
When set to Hex, the output is the hex character.
Useful for viewing settings with binary characters when using serial
command on a terminal.
<KSserial command echo status,serial command beep status,control/
hex output>
Control
0 = Control
1 = Hex
8-14
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 8 Outputs
Beeper Status
Definition:
A beep is emitted either after each good read of a bar code label or
after each noread.
Note: Beeper will also sound if any of the following occur:
• the scanner is defaulted
• a send/save command from ESP or an Exit command from any
embedded menu
Usage:
• a <Z>, <Zp>, <Zd>, or <KS,1> command is sent
Can be used as an audible verification that either a good read or a
noread has occurred.
Status
Serial Cmd:
Default:
Options:
<Kustatus,volume>
On Good
0 = Disabled
1 = On Good
2 = On Noread
8–Outputs
Volume
Serial Cmd:
Default:
Options:
<Kstatus,volume>
Level 4
0 = Off
1 = Level 1
2 = Level 2
3 = Level 3
4 = Level 4
5 = Level 5
MS-820 Industrial Bar Code Scanner User’s Manual
8-15
Partial Output
Partial Output
Definition:
Usage:
When enabled, allows you to pre-select portions of labels to be transmitted by the scanner.
In Multilabel mode, partial output is performed on each separate
label. For example, if Start Position is set to 3 and Partial Length is
set to 5, the following labels are transmitted as follows:
1234567890 as 34567
1234 as 34
123456789,abcde as “34567,cde” (two labels with separator)
12 as [blank]
Status
8–Outputs
Serial Cmd:
Default:
Options:
<KY status,start postion,length>
Disabled
0 = Disabled
1 = Enabled
Start Position
Definition:
Serial Cmd:
Default:
Options:
Allows you to determine the first character from the beginning of a label
to transmit.
<KYstatus,start postion,length>
1
1 to 2710
Partial Length
Definition:
Serial Cmd:
Default:
Options:
8-16
Allows you to determine the number of characters to be transmitted.
<KYstatus,start postion,length>
63
1 to 2710
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 8 Outputs
Operation Command Output
Definition:
Usage:
Serial Cmd:
Default:
Options:
Directs the scanner to bracket non-bar code scanner data outputs such
as counters with command start and stop characters and echo the command to the screen.
Useful when brackets are required to delineate certain scanner outputs
such as counters.
<K/ status>
Enabled
0 = Disabled
1 = Enabled
8–Outputs
MS-820 Industrial Bar Code Scanner User’s Manual
8-17
8–Outputs
Operation Command Output
8-18
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter
Discrete I/0
9
Chapter Contents
Output 1 .................................................................................................14-4
Output 2 .................................................................................................14-6
Output 3 .................................................................................................14-6
Note: The characters NULL <> and , can only be entered through embedded menus,
not through ESP or serial commands.
MS-820 Industrial Bar Code Scanner User’s Manual
9-1
9–Discrete I/0
This section includes instructions for setting up conditions for changing input/output
electrical transitions for control of internal and external devices. A discrete I/O (in/
out) signal is an electrical transition from one voltage level to another so that digital
switching can occur.
Discrete I/O by ESP Menu
Click this button to
bring up the Outputs
menu.
To change a setting,
double-click the
setting and use your
curser to scroll
through the options.
Discrete I/O by Serial Command
9–Discrete I/0
Command Title
Output 1
Output 2
Output 3
Scanner I/O Status
Request
9-2
cmds
Format
Kv
Kw
K‘
<Kvoutput on,active state,pulse width,number before output>
<Kwoutput on,active state,pulse width,number before output>
<K‘output on,active state,pulse width,number before output>
KX?
<KX?>
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 9 Discrete I/0
Discrete I/O by Embedded Menus
For information on accessing the embedded menus, see “Embedded Menus” on page
A-19.
From the Main menu, scroll down through the options and select the following screen:
9–Discrete I/0
MS-820 Industrial Bar Code Scanner User’s Manual
9-3
Output 1
Output 1
Definition:
Usage:
Sets the discrete output functions for specific user-selected conditions.
This option provides switching to host software to control external
devices such as PLCs and relays. It is useful for routing and sorting and
to prevent mis-packaging and mis-routing.
Output On
Definition:
Serial Cmd:
Default:
Options:
Allows the user to set the conditions under which an output (or outputs) will be activated.
<Kvoutput on,active state,pulse width,number before output>
Noread
0 = Mismatch Or Noread
1 = Match (or good read)
2 = Mismatch
3 = Noread
Note: If Output On is set to Mismatch Or Noread, Match, or Mismatch, a transition (switching) will not occur unless Matchcode Type is enabled and a master label
is loaded into memory.
Mismatch or Noread
9–Discrete I/0
Definition:
Activates discrete output when the bar code data does not match that
of the master label or the bar code has not been decoded before the
end of the read cycle.
Match
Definition:
Activates a discrete output when the bar code data matches the master
label.
Note: If you want to output for a good read and Matchcode is not
enabled, you can enable any output for Match.
Mismatch
Definition:
Activates a discrete output whenever the bar code data does not match
that of the master label.
Noread
Definition:
9-4
Activates a discrete output whenever the bar code data is not decoded
before the end of the read cycle.
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 9 Discrete I/0
Active State
Definition:
Serial Cmd:
Default:
Options:
Sets the active state of the discrete output.
<Kvoutput on,active state,pulse width,number before output>
Normally Open
0 = Normally Closed
1 = Normally Open
Pulse Width
Definition:
Serial Cmd:
Default:
Options:
Sets the time in 10 mS increments that the discrete output remains
active.
<Kvoutput on,active state,pulse width,number before output>
5 (.05 seconds). Corresponds to 50 mS displayed in the menu.
1 to 255 (0.01 to 2.55 seconds). Divide the number entered on the
command line by 100 for time in seconds.
Number Before Output
Definition:
Usage:
Serial Cmd:
Default:
Options:
Sets the number of events (matches, mismatches, or noreads as configured by Output On) that must occur before activating the associated
output.
For example, if Number to Output On is set to 3 and Output 1 is set to
Noread, then Output 1 will not be activated until 3 noreads have occurred.
<Kvoutput on,active state,pulse width,number before output>
0
0 to 255
9–Discrete I/0
MS-820 Industrial Bar Code Scanner User’s Manual
9-5
Output 2
Output 2
Serial Cmd:
<Kwoutput on,active state,pulse width,number before output>
Output 2 has the same parameters and default settings as Output 1.
Output 3
Serial Cmd:
<K‘output on,active state,pulse width,number before output>
9–Discrete I/0
Output 3 has the same parameters and default settings as Output 1.
9-6
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter
Diagnostics
10
Chapter Contents
Warning Messages ................................................................................10-4
Warning Message Status.......................................................................10-5
Laser High Warning ...............................................................................10-6
Laser Low Warning ................................................................................10-7
NOVRAM Reset Warning Status ...........................................................10-8
High Temperature Threshold .................................................................10-9
Low Temperature Threshold................................................................10-10
Lifetime Hours......................................................................................10-11
Important: Since Warning Messages and NOVRAM Messages are not enabled by
default, these messages will not be displayed. However, if you suspect that erroneous
defaults are occurring, enable Warning Messages and NOVRAM Messages by
sending <K”1,,,1>.
Note: The characters NULL <> and , can only be entered through embedded menus,
not through ESP or serial commands.
10–Diagnostics
MS-820 Industrial Bar Code Scanner User’s Manual
10-1
Diagnostics by ESP Menu
Click this button to
bring up the
Diagnostic
menu.
To change a setting,
double-click the
setting and use your
curser to scroll
through the options.
Diagnostics by Serial Command
10–Diagnostics
Command Title
Warning Message Status
K”
Lifetime Hours
Over-temperature
Under-temperature
Laser Overcurrent
Laser Undercurrent
Power On/Resets Counts
Time Since Last Reset
Present Operating
Temperature
K$
K+
KK;
K:
K_
K@?
Format
<K”warning message status,laser high status,laser low
status,novram/reset warning status>
<K$hours10,message>
<K+degrees,message>
<K-degrees,message>
<K;message>
<K:message>
<K_powerups,resets>
<K@?hours,minutes> (read only)
K%?
<K%?deg> (read only)
10-2
Cmds
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 10 Diagnostics
Diagnostics by Embedded Menu
For information on accessing the embedded menus, see “Embedded Menus” on page
A-19.
From the Main menu, scroll down through the options and select the following screen:
10–Diagnostics
MS-820 Industrial Bar Code Scanner User’s Manual
10-3
Warning Messages
Warning Messages
Important Note: Warning Message Status must be enabled before any warnings
in this menu can be displayed.
Definition:
Usage:
Serial Cmd:
Warning messages that relate to the environment and condition of the
scanner can be defined and set to activate specific outputs.
Note: When enabled, the error condition will override all other operational modes configured for the output.
When enabled, laser current and NOVRAM warning messages will be
transmitted to the host or any active port whenever the pre-defined
conditions are met.
These messages serve as a flag to service a scanner or as an early
warning that potential problems could arise. They are particularly useful in factories that run 24/7 and can’t afford down time.
<K ”warning message status,laser high status,laser low status,
novram/reset warning status>
Warning Message Status
Function:
Usage:
Serial Cmd:
10–Diagnostics
Default:
Options:
When enabled, warning messages will be transmitted to the host or any
active port.
Note: This option must be enabled before any other warning messages
can be transmitted.
Alerts the user to impending failures or conditions that may soon cause
failures.
<K”warning message status,laser high status,laser low status,
novram/reset warning status>
Disabled
0 = Disabled
1 = Enabled
10-4
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 10 Diagnostics
Laser High Warning
Transmits a message whenever the laser current exceeds a factory-calibrated reference value which cannot be altered. The message repeats once every 30 minutes until
the condition is corrected.
Laser High Status
Definition:
Usage:
Serial Cmd:
Default:
Options:
Enables the Laser High message.
Alerts the user to impending laser failure. (Contact Microscan Service.)
<K”warning message status,laser high status,laser low status,
novram/reset warning status>
Enabled
0 = Disabled
1 = Enabled
Laser High Message
Definition:
Serial Cmd:
Default:
Options:
Defines the Laser High message.
<K;laser high message>
HI-LASER
Any 1 to 10 character ASCII string except NUL, <, or >.
10–Diagnostics
MS-820 Industrial Bar Code Scanner User’s Manual
10-5
Warning Messages
Laser Low Warning
When enabled a message up to 10-characters is transmitted whenever the laser current falls below a factory-calibrated reference value which cannot be altered. The
message repeats once every 30 minutes until the condition is corrected.
Laser Low Status
Definition:
Usage:
Serial Cmd:
Default:
Options:
Enables the Laser Low message.
Alerts the user to impending laser failure. (Contact Microscan Service.)
<K” warning message status,laser high status,laser low status,
novram/reset warning status>
Enabled
0 = Disabled
1 = Enabled
Laser Low Message
Definition:
10–Diagnostics
Serial Cmd:
Default:
Options:
When enabled a message up to 10-characters is transmitted whenever
the laser current falls below a factory-calibrated reference value which
cannot be altered. The message repeats once every 30 minutes until
the condition is corrected.
Defines the Laser Low message.
<K:laser low message>
LO-LASER
Any 1 to 10 character ASCII string except NUL, <, or >.
10-6
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 10 Diagnostics
NOVRAM Corrupt Warning Status
When enabled, a 7 character message is sent whenever the system detects a warning
condition.
Important Note: Warning Corrupt Message Status must be enabled before the
NOVRAM message in this menu can be transmitted.
Function:
Usage:
Serial Cmd:
Default:
Options:
When enabled, a 7 character message is sent whenever the system
detects a warning condition.
However, if you suspect that erroneous defaults are occurring, enable
NOVRAM Messages by sending <K1,,,1>. This will allow the
NOVRAM messages, if present, to be viewed.
Alerts the user to NOVRAM failure. (Contact Microscan Service.)
<Kwarning message status,laser high status,laser low status,
novram reset warning status>
Disabled
0 = Disabled
1 = Enabled
Warning messages for NOVRAM can appear in one of five formats:
<NVRAM-C>
This message indicates an error in user settings. The message repeats once every 30
minutes. If this message is received, restore customer settings and send a <Z> command.
If the condition persists, call customer service.
<NVBAD-D>
Indicates that diagnostic lifetime hours, power-on counts, and reset counts have been
lost. The message repeats once every 30 minutes. (Contact Microscan Service.)
<NVBAD-L>
Indicates a problem with laser current factory reference. The message repeats once
every 30 minutes. (Contact Microscan Service.)
<DFALT-C>
Indicates that the customer NOVRAM settings have been defaulted either by a customer initiated default or by a problem with the scanner. This message is sent ONLY
ONCE.
Indicates that the factory NOVRAM settings have been defaulted. This message is sent
ONLY ONCE upon reset. (Contact Microscan Service.)
MS-820 Industrial Bar Code Scanner User’s Manual
10-7
10–Diagnostics
<DFALT-F>
High Temperature Threshold
High Temperature Threshold
A message can be defined that will display when a user-set High Temperature
Threshold has been reached. The message repeats once every 30 minutes until the
condition is corrected. This value is a reference to the external ambient temperature
in the environment around the scanner.
High Temperature Degrees
Definition:
Usage:
Serial Cmd:
Default:
Options:
A user can set a temperature value that when exceeded will cause a
high temperature message to be displayed. If High Temperature
Threshold is set to zero, then the warning message will be disabled
Helps ensure that the scanner is being used within its temperature
specification. Also, since hotter environments tend to shorten the life of
electronics components, a user may want to set the temperature
threshold closer to the nominal temperature of 25°.
<K+degrees,message>
50° Celsius
0° to 50°, zero disables.
High Temperature Message
Definition:
10–Diagnostics
Serial Cmd:
Default:
Options:
The user can enter a 10-character message that will be displayed
whenever High Temperature Threshold is exceeded.
<K+degrees,message>
HI_TEMP
Any 1 to 10 character ASCII string except NUL, <, or >.
10-8
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 10 Diagnostics
Low Temperature Threshold
A message can be defined that will display when a user-set Low Temperature
Threshold has been reached. The message repeats once every 30 minutes until the
condition is corrected. This value is a reference to the external ambient temperature
in the environment around the scanner.
Low Temperature Degrees
Definition:
Usage:
Serial Cmd:
Default:
Options:
The user can set a low temperature value that whenever the ambient
temperature falls below it causes a low temperature message to be displayed. If Low Temperature Threshold is set to zero, the warning
message will be disabled.
Helps ensure that the scanner is being used within its temperature
specification.
<K – degrees,message>
1° Celsius
0° to 50°, zero disables.
Low Temperature Message
Definition:
Serial Cmd:
Default:
Options:
The user can enter a 10-character message that will be displayed
whenever the ambient temperature falls below the Low Temperature
Threshold.
<K– degrees,message>
LO_TEMP
Any 1 to 10 character ASCII string except NUL, <, or >.
10–Diagnostics
MS-820 Industrial Bar Code Scanner User’s Manual
10-9
Lifetime Hours
Lifetime Hours
A message can be defined that will be transmitted whenever the scanner’s elapsed
time clock exceeds the set hours threshold. The message repeats one time every 30
minutes.
Hours Threshold
Definition:
Usage:
Serial Cmd:
Default:
Options:
A user can set a time in hours that will cause a message to be sent
whenever the scanner’s run time exceeds this value.
The elapsed time is the time the scanner is powered up.
Useful for setting up a preventive maintenance program.
<K$ hours10,message>
2500 (actually 25,000 hours)
0 to 65534
Note: Hours entered are 1/10 of the actual hours.
Message
Definition:
10–Diagnostics
Serial Cmd:
Default:
Options:
A user can define message up to 10-characters that will be displayed
whenever the hours threshold is reached or exceeded.
<K$hours10,message>
SERVICE
Any 1 to 10 character ASCII string except NUL, <, or >.
10-10
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 10 Diagnostics
Present Ambient Temperature (deg. C)
(This command is READ ONLY.)
Definition:
Usage:
Serial Cmd:
Close estimation of external temperature.
A thermal sensor on the main PCB measures the internal temperature
of the scanner. From this a case-differential constant is subtracted to
yield an estimated external temperature.
Indicates temperature of the environment immediately outside of the
scanner. Useful for setting Over Temperature Threshold and Under
Temperature Threshold.
Send: <K%?>
Returns <K% degrees Celsius>.
Note: When viewing the Present Operating Temperature, allow at least 20 minutes after startup for the scanner’s inside and outside temperatures to stabilize.
10–Diagnostics
MS-820 Industrial Bar Code Scanner User’s Manual
10-11
Counts
Counts
(These commands are READ ONLY.)
Powerups
Definition
Usage:
Serial Cmd:
Read Only
Ranges:
Returns the number of times the scanner has been re-powered or a
watchdog reset occurs.
Useful for detecting unwanted resets caused by power supply problems
or ESD transients.
Send <K_>
Returns <K_ powerups,resets>
0 to 65,535 powerups, 0 to 65,535 resets.
Resets
Definition
Usage:
Serial Cmd:
Resets include watchdog reset, <A>, <Z>, <Zd>, and hardware
defaults. A watchdog reset is a reset that is forced whenever the software locks-up.
Useful for detecting unwanted resets caused by power supply problems
or ESD transients.
Send <K_>
Returns <K_ powerups,resets>
0 to 65,535 powerups, 0 to 65,535 resets.
10–Diagnostics
Read Only
Ranges:
10-12
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 10 Diagnostics
Time Since Last Reset
(This command is READ ONLY.)
Definition:
Usage:
Serial Cmd:
Records the number of hours and minutes of operation since the last
system reset.
Useful as a troubleshooting tool that can help pinpoint the cause of a
reset.
Send <K@?>
Returns <K@ hours,minutes>
Read Only
Ranges:
0 to 23 hours, 0 to 59 minutes.
10–Diagnostics
MS-820 Industrial Bar Code Scanner User’s Manual
10-13
10–Diagnostics
Time Since Last Reset
10-14
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter
Utilities
11
File Transfer...........................................................................................11-5
Counters ................................................................................................11-6
Part Number ..........................................................................................11-8
Checksum ..............................................................................................11-9
Read Rate............................................................................................11-10
Device Control .....................................................................................11-12
Code Types .........................................................................................11-13
Defaulting/Saving/Initializing ................................................................11-13
Master Label ........................................................................................11-13
Utility commands are generally commands that are performed during scanner operations to check read rates, determine read rates or perform miscellaneous operations
on scanner hardware. Serial utility commands are not prefaced with a “K”. Nor do
they require an initialization command (<A> and <Z>). They can be entered from
within any terminal program or from within ESP-MP in the Terminal window or the
window adjacent to the Utilities menu.
Note: The characters NULL <> and , can only be entered through embedded menus,
not through ESP or serial commands.
MS-820 Industrial Bar Code Scanner User’s Manual
11-1
11–Utilities
Chapter Contents
Utilities by ESP Menu
11–Utilities
Click this button to
bring up the Utilities
menu
To change a setting,
right-click the setting and use your
curser to scroll
through the options.
Note: Utility commands are not accessible by embedded menus.
11-2
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 11 Utilities
Utilities by Serial Command
Table 11-1 Summary of Utility Serial Commands
Command Type
Counter Request
and Clear
Read Rate
Device
Control
Code Types
Commands
Trigger
Default/Reset/
Save
Name
Noread Counter
Noread Counter Reset
Trigger Counter
Trigger Counter Reset
Good Read/Match Counter
Good Read/Match Counter Reset
Mismatch Counter
Mismatch Counter Reset
Display all three Checksums of Flash memory
Display Checksum for Boot Code
Display Checksum for Application Code
Display both Part Numbers
Display Boot Code Part Number
Display Application Code Part Number
Enter Single Label Percent Rate Test
Enter Single Label Decode Rate Test
Enter Multilabel Percentage Rate Test
Enter Multilabel Decode Rate Test
PDF Information
Exit Decode Rate and Percent Rate Test
Enable Laser Scanning
Disable Laser Scanning
Motor On
Motor Off
Programmable Output 1
Programmable Output 2
Programmable Output 3
Autodiscriminate All Codes
Enable Code 39 Only
Enable Codabar Only
Enable I 2/5 Only
Serial Trigger Character
Reset (does not save for power-on)
Default
Restore Saved Settings
Reset/Save (for power-on)
Save Factory Settings
Save/Restore Factory Defaults
MS-820 Industrial Bar Code Scanner User’s Manual
11–Utilities
Part Number
Checksum/
Command
<N>
<O>
<T>
<U>
<V>
<W>
<X>
<Y>
<!>
<!b>
<!a>
<#>
<#b>
<#a>
<Cp>
<C>
<Cm>
<Cs>
<a1>
<J>
<H>
<I>
<KE>
<KF>
<L1>
<L2>
<L3>
<P>
<Q>
<R>
<S>
<char>
<A>
<Ad>
<An>
<Z>
<Zp>
<Zd>
11-3
<E>
<F>
11–Utilities
Master
Label
Status
Commands
<G>
<Mmaster label
number,data>
<M?>
<Mmaster label
number,>
<->
<?>
<?1>
<K?>
Enable Master Label *
Disable Master Label*
Store next label scanned to database.a
Enter data to database for specified label*
Request master label information*
Delete Master Label*
Input Status
Scanner Status
Extended Scanner Status
Configuration Status
a. If no number is included, the label will be saved to database number 1.
*Can also be set in the configuration menu or with a serial configuration command. (See Chapter 7,
“Matchcode.”)
11-4
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 11 Utilities
File Transfer
File transfer is used to download application code to the scanner.
Application code versions are specific to your scanner. Consult with your sales representative before downloading application code. If needed, an application code will be
sent to you in the form of a *.mot file.
To download application code:
1. First make sure the host is connected to your scanner.
3. In the Utilities window, right-click on File Transfer and select Download/App
Code.
This will open a file dialog box.
4. Navigate to the appropriate file (a *.mot file) and open the file.
As application code begins to download to the scanner, the scanner will go silent, the
scanner’s RDY and GD/RD LEDs will flash intermittently, and a progress indicator at
the bottom of the ESP window will let you know when the download is complete.
Caution: Do not interrupt power or disconnect the host cable while download is in
progress.
MS-820 Industrial Bar Code Scanner User’s Manual
11-5
11–Utilities
2. Apply power to the scanner.
Counters
Counters
11–Utilities
Counter commands can be a numeric value from 00000 to 65,535. After reaching the
maximum numeric limit of 65,535, an error message will be displayed and the counter
will automatically roll-over and start counting again at 00000. To obtain the cumulative total of counts after the roll-over has occurred, add 65,536 per each roll-over
(the scanner does not keep track of the number of roll-overs) to the current count.
Note: All counter values will be lost if power is recycled to the scanner or the scanner
receives a reset or save command.
By ESP
You can access Counters from the Utilities menu.
Right-click the appropriate counter option and select Request to display count or
Clear to set counter to zero.
By Serial Command
Noread Counter
Sending <N> displays the total number of noreads that have occurred since the last
reset.
Noread Counter Reset
Sending <O> sets Noread Counter to 00000.
Trigger Counter
Sending <T> displays the total number of triggers since the last reset.
Trigger Counter Reset
Sending <U> sets the trigger counter to 00000.
Good Read/Match Counter (or Good Read Counter)
Sending <V> displays the total number of good reads matching the master label or, if
Master Label is not enabled, the number of good reads since the last reset. This
counter is always enabled, but will only work as a match count when Master Label is
enabled. If Master Label is not enabled, this counter records the number of good
reads. This count can be requested at any time.
11-6
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 11 Utilities
Good Read/Match Counter Reset
Sending <W> sets the Match Counter to 00000.
Mismatch Counter
Sending <X> displays the number of decoded labels since the last reset that do not
match the master label.
Mismatch Counter Reset
Sending <Y> sets the Mismatch Counter to zero.
11–Utilities
MS-820 Industrial Bar Code Scanner User’s Manual
11-7
Part Number
Part Number
You can send a request to the scanner for part numbers, checksums, boot codeand
application code.
11–Utilities
By ESP
You can access Part Number from the Utilities menu.
Right-click the appropriate option and select Request to see the associated part
number or check sum number.
By Serial Command
Upon sending <#> the scanner returns software part numbers for application code
<#a/__________> and boot code <#b/_________>.
Individual part numbers for Application Code and Boot Code are returned when
their respective commands <#a> and <#b> are sent.
11-8
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 11 Utilities
Checksum
You can send a request to the scanner for part numbers, checksums, boot codeand
application code.
By ESP
By Serial Command
Upon sending <!> the scanner returns three 4-digit hex numbers that are displayed
under Check Sum. Checksums verify a scanner’s flash memory.
Individual checksums for Boot Code and Application Code are returned when their
respective commands <!b> and <!a> are sent.
MS-820 Industrial Bar Code Scanner User’s Manual
11-9
11–Utilities
You can access Checksum from the Utilities menu.
Right-click the appropriate option and select Request to see the associated part
number or check sum number.
Read Rate
Read Rate
You can do a read rate test for decode rate or percent by ESP or serial command.
By ESP
You can access Read Rate from the Utilities menu.
11–Utilities
To start or end a read rate test, right-click Read Rate and select Start or Stop.
To change from percent read rate to decodes per second, right-click Read Rate and
make the selection.
By Serial Command
Enter Single Label Decodes/Second Test
Sending <C> instructs the scanner to transmit the decodes per second and label data
(if any). The decode rate can vary dramatically due to the angle and location of the
label in relation to the scan line. This test is very useful in aligning and positioning the
scanning device during installation.
Enter Single Label Percent Test
Sending <Cp> instructs the scanner to transmit the percentage of decodes and any
scanned label data.
Enter Multilabel Percent Test
Sending <Cm> instructs the scanner to transmit the percentage of scans decoded and
label data (if any) for multiple labels.
Enter Multilabel Decode Rate Test
Sending <Cs> instructs the scanner to transmit the decode rate and label data (if
any) for multiple labels.
11-10
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 11 Utilities
Enter Percent PDF Read Rate Test
Sending <CPDF> instructs the scanner to transmit the number of decodes per second on the full PDF label. This test includes both capture and decode and translation
time. Note that the output format of the data is done as a running average of
750 mS windows. This means that you can remove the label from the view of the
scanner and it will continue to transmit some history of the label for a few outputs.
End Read Rate Test
Sending <J> ends both the Percent test and the Decodes/Second test for both
single and multi-label.
Sending the <a1> check box will cause PDF417 symbology data to be prefaced with
information consisting of error correction level, number of rows, number of columns,
number of informative code words and the number of data characters.
Explanation of above PDF Info sample of a PDF417:
Level = 5 tells you that the error correction level is level 5. There are 13 rows and 6
columns. There are 14 info code words, and 16 characters in the data.
This feature can be disabled by using the exit read rate command <J>.
MS-820 Industrial Bar Code Scanner User’s Manual
11-11
11–Utilities
Enable PDF Information
Device Control
Device Control
You can control laser scanning by ESP or serial command.
By ESP
You can access Device Control from the Utilities menu.
11–Utilities
For any of the Device Control commands, right-click on the command and make
your selection.
By Serial Command
Enable Laser Scanning
Sending <H> will turn the laser on continuously.
Note: Enable Laser Scanning does not relate to Laser On/Off command.
Disable Laser Scanning
Sending <I> will turn the laser off. This feature is useful during extended periods of
time when no bar code labels are being scanned or the scanner is being configured.
Disabling laser scanning will not affect any downloaded commands to the scanner.
Note: Disable Laser Scanning does not relate to Laser On/Off, which when
enabled also turns off the laser but only between read cycles.
Motor On
Sending <KE> turns the spinning mirror on (if not already running).
Note: the spinning mirror reaches full speed after a short time delay.
Motor Off
Sending <KF> turns the spinning mirror motor off. This command is useful for long
idle periods.
Note: Laser turns off whenever motor is off.
11-12
MS-820 Industrial Bar Code Scanner User’s Manual
Chapter 11 Utilities
Output #1
Sending <L1> activates the link between Output 1(+) and Output 1 (–) of the 25-pin
host connector (regardless of Master Label or Output 1 status).
Output #2
Sending <L2> activates the link between Output 2(+) and Output 2 (–) of the 25-pin
host connector (regardless of Master Label or Output 2 status).
Output #3
Sending <L3> activates the link between Output 3(+) and Output 3 (–) of the 25-pin
host connector (regardless of Master Label or Output 3 status).
11–Utilities
Code Type
See also “Autodiscriminate” on page 5-28 for a discussion of Utility commands for
Code Types and Autodiscrimination.
Default:
Options:
Code 39 (only)
<P> Enables most code types.
<Q> Enable Code 39 only
<R> Enable Codabar only
<S> Enable I 2/5 only
Master Label Database
See “Master Label Database” on page 7-10.
Defaulting/Saving/Initializing
See Appendix H — “Defaulting/Saving/Initializing” on page A-20.
MS-820 Industrial Bar Code Scanner User’s Manual
11-13
11–Utilities
Defaulting/Saving/Initializing
11-14
MS-820 Industrial Bar Code Scanner User’s Manual
Appendices
Chapter Contents
MS-820 Industrial Bar Code Scanner User’s Manual
A-1
Appendices
Appendix A General Specifications ............................................................ A-2
Appendix B Electrical Specifications .......................................................... A-5
Appendix C Serial Configuration Commands........................................... A-11
Appendix D Serial Command Format....................................................... A-14
Appendix E ASCII Table........................................................................... A-16
Appendix F Embedded Menus ................................................................. A-18
Appendix G Defaulting/Saving/Initializing................................................. A-19
Appendix H Position Scanner and Bar Code ........................................... A-23
Appendix I Test Decode Rate .................................................................. A-24
Appendix J Formulas for Number of Decodes ............................................ A-25
Appendix K Operational Tips.................................................................... A-29
Appendix L Interface Standards ............................................................... A-30
Appendix M Multidrop Communications................................................... A-31
Appendix N Glossary of Terms ................................................................ A-36
Appendix A
Appendix A — General Specifications
Key Features
• Multiple label and symbology reading
• Industrial IP65 rated enclosures
Back
.93"
(2.36 cm)
Mechanical
Depth: 2.59” (65.8mm)
Width: 3.47” (88.1mm)
Height: 1.38” (35.0mm)
Weight: 7.5 oz. (212g)
.54"
(1.37 cm)
2 x M4 x .7 .18 deep
1,10"
(2.79 cm)
Top
Appendices
Environmental
Ambient Light Immunity:
450 foot candles (indoor: fluorescent, incandescent, mercury vapor, sodium vapor); 1800
foot candles (soft outdoors)
Enclosure rating: IP65
Operating temperature: 0° to 50°C
Storage Temperature: –29° to 70°COperating
temperature:
Humidity: Up to 90% (non-condensing)
Emissions and Immunity
.53"
(1.35 cm)
3.47"
(8.81 cm)
Side
1.10"
(2.7 cm)
.62"
(1.57 cm)
Laser Light
1.40"
(3.56 cm)
A-2
Front
1.38"
(3.50 cm)
General immunity for ITE equipment:
EN 55024:98
General immunity for heavy industry:
EN 61000-6-2:98
Radiated and conducted emissions
of ITE equipment: EN 55022:98, Class A
Semiconductor visible laser diode: 650nm nominal; 780nM nominal (optional)
Safety class:
Visible laser: CDRH Class II, 650nm
Infrared laser: CDRH Class 1, 780nm
Operating Life: 50,000 hours @25°C
2.40"
(6.10 cm)
2.59"
(6.58 cm)
.54"
(0.37cm)
2.59"
(6.58 cm)
2 pl, M4.0 x 0.7
3.8 mm deep
2.59"
(6.58 cm)
Bottom
Figure A-1 MS-820 Dimensions
MS-820 Industrial Bar Code Scanner User’s Manual
General Specifications
Scanning Parameters
Scanning mirror type:
Rotating, 10-faceted
Options: Single line/raster
Scan width angle: Typically 60°; Pitch: ±50° max.; Skew: ±40° max.
Label contrast: 25% min. absolute dark to light differential at 650nm wavelength
Communication
RS-232, RS-422/485, Daisy Chain , DeviceNet and Ethernet (Modicon) can be used with an
accessory IB-131 Interface.
Code Types
Standard offering: Code 128, Code 39, Code 93, Codabar, Interleaved 2 of 5, UPC/EAN,
PDF417
Application standards: AIAG, UCC/EAN-128
FIS Options
Light
Density
Line
001
Visible
Low Density
Single Line
002
Visible
High Density
Single Line
003
Visible
Low Density
Raster
004
Visible
High Density
Raster
Appendices
FIS #
Read Ranges
Table A-1 MS-820 Read Rangesa
Narrow-bar-width
.0033" (.084mm)
.005" (.127mm)
.0075" (.190mm)
.010" (.254mm)
.015" (.381mm)
.020" (.508mm)
.040" (1.020mm)
High Density
Call Microscan
4" to 5.5" (102 to 140mm)
3.5" to 6.75" (89 to 171mm)
3.25" to 8" (82 to 203mm)
3" to 9" (76 to 229mm)
-
Low Density
10" to 12" (254 to 305mm)
7" to 16" (178 to 406mm)
6" to 19" (152 to 483mm)
5" to 22" (127 to 558mm)
4" to 30" (102 to 762mm)
a. Range data is based on a grade A Code 39 label.
MS-820 Industrial Bar Code Scanner User’s Manual
A-3
Appendix A
Beeper
Beeps on output (good read, noread, on/off.
LED Indicators
Table A-2 MS-820 Status Lights
LED
PWR
RDY
GD/RD
State
Red-On
Green-On
Green-On
Status
Scanner has power
Scanner is ready to read
Label is qualified as good
Safety Certifications
Appendices
FCC, CDRH, CE, UL/cUL, TüV, BSMI
Product specifications are given for typical performance at 25°C (77°F) using grade A labels.
Some performance characteristics may vary at high temperatures or other environmental
extremes.
© Microscan Systems, Inc., Specifications subject to change
Note: Specifications subject to change.
A-4
MS-820 Industrial Bar Code Scanner User’s Manual
Electrical Specifications
Appendix B — Electrical Specifications
Maximum Operating Power: 3.6 Watts
Power Input: 10 to 28VDC, 200mV p-p max. ripple, 120 mA @ 24VDC (typical)
Trigger, New Master: 4.5 to 28 VDC (optoisolated)
Outputs (1,2,3): 1 to 28VDC (optoisolated) rated
(ICE <100mA @24VDC, curren7t limited by user)
Pin Assignments
Table A-3 MS-820 Host Connector, 15-pin
Pin
In/
Out
In
Out
In
6
1
5
In
Out
Appendices
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Host
Host & Aux
Host
RS232
RS232
RS422/485
Power +10 to 28 VDC
Host TxD
Host TxD
TxD (–)
Host RxD
Host RxD
RxD (–)
Power/Signal ground
Trigger (–)
RTS
Aux TxD
TxD (+)
Output 1 (+)
Default configurationa
Trigger (+)
CTS
Aux RxD
RxD (+)
Output 3 (+)
New master pin
Chassis groundb
Output 2 (+)
Outputs 1, 2, 3 (–)
Out
In
In
In
Out
In
11
15
10
Out
Out
a. The default is activated by connecting pin 8 to ground pin 4. See “By Hardware Default” on page A-21.
b. Chassis ground: Used to connect chassis body to earth ground only. Not to be used as power or signal
return.
Caution: If using your own power supply, verify correct connection of power and
ground lines. Incorrect connections or use of “Chassis ground,” “Power ground,” and
“Signal ground” lines could cause equipment and/or software failure.
MS-820 Industrial Bar Code Scanner User’s Manual
A-5
Appendix B
Optoisolator Outputs
Optoisolator circuits can transfer pulses between the scanner and peripherals with no
direct connection with the scanner’s internal circuitry. However, not every optoisolator
configuration provides complete isolation. The following diagrams show both fully
optoisolated and non-optoisolated circuits. They are only examples and do not represent all the possible wiring configurations.
Generic Output Waveform Characteristics
Iload =5mA Iload =50mA
Iload =100mA
V Out-On
0.5V
0.5V
1.0V
t On-Typ
5mS
0.7mS
0.8mS
t Off-Typ
5µS
5µS
5µS
Outputs (+)
Scanner
Output
ILoad
Outputs (–)
Output Circuit Examples
Appendices
Fully Optoisolated
Host
Isolated Scanner
This circuit is fully optoisolated and the
recommended configuration. It allows
the user to apply 1 to 28 VDC to the
circuit.
Caution: The maximum current that
can pass through the optoisolator is
100 mA.
Power (+)
1 to 28 V
Scanner
Outputs (+)
Output
Input
Outputs (–)
Power ground
Not Optoisolated, Scanner Grounded
In this diagram, power is applied
externally, but the scanner’s power
ground is used to complete the circuit.
This setup involves some risk to the
optoisolator if excessive voltages are
applied.
Caution: The maximum current that
can pass through the optoisolator is
100 mA.
A-6
Non-isolated Scanner
Host
Power (+)
1 to 28 V
Scanner
Outputs (+)
Output
Input
Outputs (–)
Power ground
MS-820 Industrial Bar Code Scanner User’s Manual
Electrical Specifications
Additional Isolated Output Circuit Examples
Secondary Relay
1 to 28 V
Power +
Scanner
Output
Outputs (+)
V
PLC
Input
Outputs (+)
Outputs (–)
Output
PLC
Power +
RELAY
Isolated Scanner
Scanner
Isolated Scanner
PLC
GND
Power ground
Outputs (–)
Power ground
Appendices
MS-820 Industrial Bar Code Scanner User’s Manual
A-7
Appendix B
Optoisolator Inputs
All discrete inputs can be fully isolated pulses as PNP or NPN circuits.
Inputs include trigger and new master.
Generic Waveform Characteristicsa
Minimum
VIN-HIGH/IIN-HIGH 4.5 V/3.0mA
VIN-LOW/IIN-LOW
0 V/0mA
Pulse Widthmin
48 µS
Input (+)
Maximum
I load
28 V/23mA
Input (–)
2.0V/1mA
a. New Master is activated by applying a voltage of 5
to 28 VDC between New Master (+) and internal
ground.
New master pin input (–) is internally grounded.
Input Examples
Fully Optoisolated
Appendices
PNP Source
+V
Isolated Scanner
V
CC
NPN Source
(trigger only)
Isolated Scanner
V
CC
+V
Input (+)
Signal
Input (+)
Input (–)
Input (–)
Signal
New master pin input (–) is internally grounded.
Not Optoisolated
Non-isolated Scanner
V
CC
PNP Source
Power (+)
Input (+)
+V
NPN Source
(trigger only)
Non-isolated Scanner
V
CC
Signal
Power (+)
+V
Input (+)
Input (–)
Input (–)
Power ground
Power ground
New master pin input (–) is internally grounded.
A-8
MS-820 Industrial Bar Code Scanner User’s Manual
Signal
IB-131 Interface Module
Appendix C — IB-131 Interface Module
The IB-131 interface module simplifies connecting to the scanner by providing separate ports for the host, power supply, trigger and network. The network port is used
for multidrop or daisy chain configurations. See the following pages for configuration
diagrams and a list of cables offered by Microscan for ease of connectivity when
using the IB-131.
Table A-4 Host 25-pin Connector
Pin
Function
Table A-7 Scanner 15-pin Connector
Pin
Function
External ground
1
Power + 10 to 28 VDC (out)
2
Transmit data (RS-232)
2
Transmit RS-232/RS-422 (–)
3
Receive data (RS-232)
3
Receive RS-232/RS-422 (–)
4
RTS
4
Power/Signal Ground
5
CTS
5
Trigger (–) (out)
6
Output 2 (+)
6
RTS/Aux Transmit/RS-232/RS-422 (+)
7
Signal ground
7
Output 1 (+)
8
Output 1 (+)
8
Default configuration
9
Trigger (–)
9
Trigger (+) (out)
10
Trigger (+)
10
CTS/Aux Receive RS-232/RS-422 (+)
11
Default configuration
11
Output 3 (+)
13
Receive data RS-422 (+)
12
New master/OMR (out)
14
Transmit data RS-422 (–)
13
External ground
15
Output 3 (+)
14
Output 2 (+)
16
Receive data RS-422 (–)
15
Output 1/2/3 (–)
17
Output 1/2/3 (–)
19
Transmit data RS-422 (+)
25
New master/OMR (in)
Table A-5 Trigger 4-pin Connector
Pin
Function
Table A-8 Network 25-pin Connector
Pin
Function
1
Ground
2
Aux Receive RS-232
3
Aux Transmit RS-232
1
Power + 10 to 28VDC (out)
6
Output 2 (+)
2
Trigger (–) (in)
7
Signal ground
3
Power Ground
8
4
Trigger (+) (in)
13
Table A-6 Power 3-pin Connector
Pin
Function
Appendices
1
Output 3 (+)
Receive data/RS-422 (+)
14
Transmit data/RS-422 (–)
15
Output 3 (+)
16
Receive data/RS-422 (–)
1
Power Ground
17
Output 1/2/3 (–)
3
Power + 10 to 28VDC (in)
19
Transmit data (RS-422+)
MS-820 Industrial Bar Code Scanner User’s Manual
A-9
Appendix C
Mounting holes
3 places
1.25" (3.18 cm)
3.2"
(8.13 cm)
Trigger
Network
Power
Supply
Scanner
Electrical:
Voltage Input: Regulated +10 to 28VDC
Cabling:
RS-232 Cable: 61-300026
Multidrop Cable: 61-100030
Daisy Chain Cable: 61-100029
Mechanical:
Length: 3.2 in. (8.13 cm)
Width: 3.15 in. (8 cm)
Height: 0.75 in. (1.9 cm)
Host
0.17: (0.43 cm) dia.
3. places
.75"
(1.9 cm)
Figure A-2 IB-131 Mechanical
Scanner to IB-131
MS-820
61-100011
(6 feet)
U
Scanner
Host
Host
With this configuration the scanner communicates directly with the host through the IB131.
IB-131: 99-400005-02
(1 per MS-820)
Host RS-232 Serial Cable:
61-300026 (for PC)
Power Supply: 97-10004-05 (for each scanner)
Trigger: 99-440001-10
(for each scanner)
Power
Power supply
97-10004-05
Network
Appendices
3.15" (8 cm)
Trigger
Trigger
99-440001-10
Figure A-3 Scanner/IB-131 Typical Setup
A-10
MS-820 Industrial Bar Code Scanner User’s Manual
IB-131 Interface Module
Multidrop
MS-911
MS-820
61-100031
(6 Feet)
Scanner Cable
(3 Feet)
Network
Scanner
Host
Power
U
61-100030
(10 Feet)
Network
U
Scanner
Host
This setup allows the user to
link multiple scanners
together, using only one
host.
IB-131: 99-400005-02
(1 per MS-820)
Multidrop Cable: 61-100030
(connects multiple IB-131s)
Power Supply: 97-10004-05
(for each scanner)
Trigger: 99-440001-10 (for
each scanner)
Trigger
Power
Trigger
99-440001-10
Power Supply
97-10004-05
Trigger
Power Supply
97-10004-05
Trigger
99-440001-10
Figure A-4 IB-131 Multidrop Setup
Daisy Chain
Slave Scanner
Master Scanner
Appendices
Power
Power Supply
97-10004-05
Daisy Chain Cable
61-100029
(1 Foot)
U
Scanner
Trigger
Power
Trigger
99-440001-10
Power Supply
97-10004-05
Network
U
Scanner
Network
To Host
61-3000026
Host
Trigger: 99-440001-10
(for each scanner)
61-100031 (6 Feet)
Host
This setup allows the user to
link multiple scanners
together, using only one
host.
IB-131: 99-400005-02
(1 per MS-820)
Daisy Chain Cable: 61100029 (connects multiple
IB-131s)
Power Supply: 97-10004-05
(for each scanner)
Trigger
To Next Slave
Scanner
Trigger
99-440001-10
Figure A-5 Scanner/IB-131 Daisy Chain Setup
MS-820 Industrial Bar Code Scanner User’s Manual
A-11
Appendix D
Appendix D — Serial Configuration Commands
The following table is a list of all the available serial configuration commandsalphabetical. These commands are also listed at the beginning of each applicable chapter. For
utility (operational) commands see Table 11-1, “Summary of Utility Serial Commands,” on page 11-3.
Table A-9 Complete List of Serial Configuration Commands
Appendices
Command Title
Cmd
Format
Host Port Parameters
Ka
<Kabaud,parity,stop bits,data bits>
Auxiliary Port Parameters
Ky
<Kyaux port mode,baud,parity,stop bits,data bits,daisy chain status,daisy chain ID>
Host Protocol
Kf
<Kfprotocol>
LRC
Kc
<Kcstatus>
Response Timeout
KA
<KAresponse timeout>
Intercharacter Delay
KB
<KBintercharacter delay>
Preamble
Kd
<Kdstatus,preamble>
Postamble
Ke
<Kestatus,postamble>
Comm. Status Request
KT?
<KT?>
Triggering Mode
Kg
<Kgtrigger mode,filter time>
End of Read Cycle
Kh
<Khmode,timeout>
Serial Trigger Character
Ki
<Kicharacter>
Kj
<Kjexternal trigger state>
External Trigger State
Decodes Before Output
Km
<Kmdecodes before output>
Multilabel
KL
<KLnumber of labels,multilabel separator>
Narrow Margins/Symbology ID
Ko
<Konarrow margins status,symbology ID status>
Background Color
Kx
<Kxbackground color>
Code 39
Kp
<Kpstatus,check digit status,check digit output status,large intercharacter gap,fixed code length status,fixed code length,full ASCII>
Interleaved 2 of 5
Kr
<Krstatus,check digit,check digit output,length 1,length 2>
UPC/EAN
Ks
<Ksstatus,EAN status,supplementals status,separator char>
PDF417
K[
<K[status,,fixed code length status,fixed code length>
Code 128
Kt
<Ktstatus,fixed length,length,,,,,,>
UCC/EAN-128
(subset of Code 128)
Kt
<Kt,,,UCC/EAN-128 status,output format,application record separator status,application record separator character,application
record brackets,application record padding
Codabar
Kq
<Kqstatus,start & stop match status,start & stop output status,large intercharacter gap,fixed code length status,fixed code
length,check digit type,check digit output>
Code 93
K!
<K!status,fixed code length status,fixed code length>
A-12
MS-820 Industrial Bar Code Scanner User’s Manual
Serial Configuration Commands
Command Title
AIAG
Cmd
Format
KZ
<KZAIAG status, ID1, status1, ID2, status2, ID3, status3, ID4,
status4, *ID5a,ID5b,ID5c, status5, ID6, status6, ID7, status7, ID8,
status8, ID9, status9, ID9, status10, ID11, status11, ID12, status12>
Code Type Status
Request
KW?
Match Code Type
Kn
<Kntype,sequential matching,match start position,match
length,wild card character,sequence on noread,sequence on every
mismatch>
Master Label Data Base
Size
KM
<KMnumber of master labels>
New Master Pin
Kz
<Kzstatus>
<KW?>
Operations Status
Request
KV?
Background Color
Kx
Code Type Status
Request
KW?
Noread Message
Kk
<Kkstatus,output>
Laser On/Off
KC
<KCstatus,laser on/off status,laser framing status,laser off time,laser on
time>
Serial Verification
KS
<KSserial command status,serial command beep status,control/hex
output>
<KV?>
<Kxbackground color
<KW?>
Ku
<Kustatus,volume>
Kw
<Kwoutput on,active state,pulse width,number before output>
Output 3
K‘
<K‘output on,active state,pulse width,number before output>
Output 1
Kv
<Kvoutput on,active state,pulse width,number before output>
Output 2
Kw
<Kwoutput on,polarity,pulse width,# before output>
Output 3
K‘
<K‘output on,polarity,pulse width,# before output>
Bar Code Output
Kl
<Klstatus,when to output>
Partial Output
KY
<KYstatus,start position,length>
Operational Command
Output Format
K/
<K/status>
Scanner Output Status
Request
KX?
Scanner Type (factory)
KP
<KPdensity>
Scan Speed (factory)
KE
<KEscan speed>
Gain/Tracking (factory)
KD
<KDgain,tracking>
Transition Trigger
Sampling Rate
KH
<KHtransition sample status,transition sample rate threshold>
No Barcode Output
KN
<KNstatus,message>
<KX?>
MS-820 Industrial Bar Code Scanner User’s Manual
A-13
Appendices
Beeper
Output 2
Appendix D
Command Title
Bad Barcode Output
Scanner Setup Status
Request
Cmd
K’
KU?
Format
<K’status,message>
<KU?>
Raster Setup
KR
<KRstatus,top offset,bottom offset,sweep rate,read cycle on/off>
Warning Message Status
K"
<K"status1,laserhi,laserlo,novram corrupt>
Laser Overcurrent
K;
<K;message>
Laser Undercurrent
K:
<K:message>
Over-temperature
K+
<K+deg,message>
Under-temperature
K-
<K-deg,message>
Lifetime Hours
K$
<K$hours10,message>
<K%deg> (read only)
Counts
K_
<K_powerups,resets> (read only)
Time Since Last Reset
K@
<K@hours,minutes> (read only)
All Status Request
K?
<K?>
Appendices
Present Operating TemK%
perature
A-14
MS-820 Industrial Bar Code Scanner User’s Manual
Serial Command Format
Appendix E — Serial Command Format
Serial commands are of two types: utility and configuration.
Rules that apply to both utility and configuration commands
• A less than < and greater than > characters enclose the commands.
• Commands and data are “case sensitive.” That is, characters must be entered as
upper or lower case, as specified.
Serial Utility Commands
These are sent during operations and are not followed by a <A> or <Z>. See Table
11-1, “Summary of Utility Serial Commands,” on page 11-3.
Serial Configuration “K” Commands
See Appendix E — “Serial Command Format” on page A-15.
Serial Configuration Command Conventions
• All data fields (except the last) must be followed by a comma (without a space).
• The following characters cannot be used: , < > NUL.
• All fields preceding a modified field must be included.
• If there is no change in preceding fields, then commas alone can be entered in
these fields. For example, if only the last field in the following command is changing, <Ka4,1,0,0> can be entered as <Ka,,,0>.
• All fields following a modified field can be omitted. For example, to change Baud
Rate, send <Ka3>.
MS-820 Industrial Bar Code Scanner User’s Manual
A-15
Appendices
These begin with a single K character followed by a single character, data fields, and
an initializing command, as follows:
<Kparameterdata,data,...etc.><initializing command>
An initializing command <A> or <Z> always follows the command. A <Z> initializes
the scanner’s memory and saves for power-on; an <A> initializes the scanner’s memory but does not save for power-on.
For example, to enable UPC and save the change for power-on, send <K1><Z>.
To change Baud Rate and reset without saving changes for power-on, send
<Ka3><A>.
Appendix E
Concatenating Configuration Commands
Commands can be concatenated (added together) in a single string or data block.
Serial Command Status Request
To ensure that any command was received and accepted, you can send the Show
Scanner Status command: <?>.
The status of a specific serial command can be requested by entering the command
followed by a question mark.
Entering Special Characters in Serial Commands
To enter control characters within a serial command, hold down the control key while
typing the desired character.
Entering Special Characters in Embedded Menus
Appendices
Control Characters
Control characters entered on the command line are displayed in the menu as mnemonic characters, such as: <CR><LF><NUL><NUL>.
Press SP (the space bar) once, then enter the control character by holding down the
control key and simultaneously pressing the desired character. For example to define
a line feed, press SP, then Control and J simultaneously. It is displayed as ^J on the
command line and as <LF> in the menu when the screen is refreshed.
To Define a Carriage Return as a Character
Press SP, then CR. It is displayed as ^M on the command line and as <CR> in the
menu when the screen is refreshed.
To Define a Space as a Character
Press SP twice. It is displayed as a blank space in the menu when the screen is
refreshed. While it appears that nothing has been assigned, the hex value 20 will be
sent during data transmission.
To Select NUL as the Character
Press SP, then a 0 (zero). It is displayed as <NUL> in the menu when the screen is
refreshed.
A-16
MS-820 Industrial Bar Code Scanner User’s Manual
ASCII Table
Appendix F — ASCII Table
Table A-10 ASCII Table with Control Characters
Hex
00
01
02
03
04
05
06
07
08
09
0A
0B
0C
0D
0E
0F
10
11
12
13
14
15
16
17
18
19
1A
1B
1C
1D
1E
1F
Mne
NUL
SOH
STX
ETX
EOT
ENQ
ACK
BEL
BS
HT
LF
VT
FF
CR
SO
SI
DLE
DC1
DC2
DC3
DC4
NAK
SYN
ETB
CAN
EM
SUB
ESC
FS
GS
RS
US
Ctrl
^
^A
^B
^C
^D
^E
^F
^G
^H
^I
^J
^K
^L
^M
^N
^O
^P
^Q
^R
^S
^T
^U
^V
^W
^X
^Y
^Z
^[
^\
^]
^^
^_
Dec
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
Hex
20
21
22
23
24
25
26
27
28
29
2A
2B
2C
2D
2E
2F
30
31
32
33
34
35
36
37
38
39
3A
3B
3C
3D
3E
3F
Ch
SP
!
“
#
$
%
&
'
(
)
*
+
,
.
/
0
1
2
3
4
5
6
7
8
9
:
;
<
=
>
?
Dec
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
Hex
40
41
42
43
44
45
46
47
48
49
4A
4B
4C
4D
4E
4F
50
51
52
53
54
55
56
57
58
59
5A
5B
5C
5D
5E
5F
Ch
@
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
[
\
]
^
_
MS-820 Industrial Bar Code Scanner User’s Manual
Dec
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
Hex
60
61
62
63
64
65
66
67
68
69
6A
6B
6C
6D
6E
6F
70
71
72
73
74
75
76
77
78
79
7A
7B
7C
7D
7E
7F
Ch
`
a
b
c
d
e
f
g
h
i
j
k
l
m
n
o
p
q
r
s
t
u
v
w
x
y
z
{
|
}
~
D
A-17
Appendices
Dec
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Appendix F
Table A-11 Communication Protocol Commands
Protocol Command
Control Characters
Hex
(Mnemonic displayed (Entered in menu or
Code
on Microscan menu)
serial command)
Effect of Command
^D
04
Reset
REQ
^E
05
Request
EOT
^D
04
Reset
STX
^B
02
Start of Text
ETX
^C
03
End of Text
ACK
^F
06
Acknowledge
NAK
^U
15
Negative Acknowledge
XON
^Q
11
Begin Transmission
XOFF
^S
13
Stop Transmission
Appendices
RES
A-18
MS-820 Industrial Bar Code Scanner User’s Manual
Embedded Menus
Appendix G — Embedded Menus
In addition to ESP-MP, you can also use a communications menu such as Microsoft’s
HyperTerminal to establish communication with Microscan’s embedded menus.1
1. With your host connected to the configuration port, set your host communications
settings as follows: 9600, 7, 1, and Even.
2. Set Flow Control to None.
3. Make the communications port selection. (Usually COM 1 or COM 2 for desktops
and COM 1 for laptops.)
4. Upon connection, send a <D> command to bring up the main menu.
Appendices
Menu navigation commands are case sensitive. Use the space bar or N to advance to
the next item, CR (return key) to select a highlighted item, B to return to the previous item, M to return to the previous menu, and ESC to return to the Main menu or to
exit the program. When exiting the program, you will be prompted to save your active
settings for power up (Y or N). Typing Y will be equivalent to saving with a <Z> command.
1. If you are using Microsoft’s HyperTerminal program, you may find that the initial screen is
unviewable when you call up the program with the <D> command. If this occurs, simply exit
the embedded menu with a ESC, E, and N sequence and repeat the <D> command.
MS-820 Industrial Bar Code Scanner User’s Manual
A-19
Appendix H
Appendix H — Defaulting/Saving/Initializing
Defaults are original or saved settings. Defaulting occurs when default settings (from
flash or user-saved NOVRAM) are restored. Defaulting might be necessary if you have
make temporary changes, communications between the scanner and another device are
lost or interrupted, or you are using incompatible equipment (for example, a terminal
that is set at 9600 baud communicating with a scanner that is set at 38.4K baud).
Initializing occurs whenever any command or set of commands is implemented.
Active Memory (SRAM) is where the scanner’s active settings are stored during use.
These are not available on power-up.
User-saved NOVRAM (non-volatile random access memory) is where the scanner’s
operating parameters are stored for power-on. It can be changed by user command.
Flash Defaults is where the scanner’s default download/boot programs are stored. It
can only be changed by downloading application/boot codes.1
Appendices
Defaulting
Restore NOVRAM Defaults to Active Memory
• Restores user-defined NOVRAM settings to active
memory.
<An>
• Initializes serial configuration commands in
active memory and resets counters to zero.
Initialize
Active
Memory
By Serial Command
Send <An> command to the scanner.
By ESP (There is no equivalent ESP command.)
Restore Flash Defaults to Active Memory
• Restores flash defaults to memory.
• Initializes serial configuration commands in
active memory and resets counters to zero.
User-Saved
NOVRAM
<Ad>
Send <Ad> command to the scanner.
Initialize
Active
Memory
• Does not save settings to NOVRAM for power-on.
By Serial Command
Flash
Defaults
User-Saved
NOVRAM
By ESP
1. Right-click in the configuration window and
select Default All ESP Settings.
2. Right-click and select Save to Scanner, Send and Save.
1. See your Microscan sales representative to access the latest application codes.
A-20
MS-820 Industrial Bar Code Scanner User’s Manual
Flash
Defaults
Defaulting/Saving/Initializing
Restore Flash Defaults to Active Memory and for Power-on
Caution: Defaulting the scanner to flash default settings will overwrite user-saved NOVRAM settings.
• Restores flash defaults to memory.
<Zd>
Active
Memory
• Restores flash defaults to user-saved NOVRAM
for power-on.
• Initializes serial configuration commands in
active memory and resets counters to zero.
Initialize
User-Saved
NOVRAM
Flash
Defaults
By Serial Command
Send <Zd> command to the scanner.
By ESP
1. Right-click in the configuration window and select Default All ESP Settings.
2. Right-click and select Save to Scanner, Send and Save.
By Hardware Default
2. Locate pins or wires that have continuity to pins4 and8 on the back of the scanner
(see figure A-8 on page A-27). If using an IB-131, locate pins 7 and 11 on the
host connector (see Table A-3 on page A-5).
Caution: Be certain that the correct pins are located. Connecting the wrong
pins could cause serious damage to the unit.
3. Momentarily connect these wires (or pins) and listen for a series of short beeps.
4. Within 3 seconds, connect them again. A longer beep should be heard. If not,
repeat the process.
MS-820 Industrial Bar Code Scanner User’s Manual
A-21
Appendices
If a software default reset is not possible, it may be necessary to reset the scanner by
shorting (connecting) specific pins. This procedure has the same effect as the <Zd>
software command.
1. Apply power to the scanner.
Appendix H
Saving
Save Active Settings except Factory for Power-on
• Initializes serial configuration commands in
active memory and resets counters to zero.
Initialize
<Z >
• Saves all active settings except factory settings
to NOVRAM for power-on.
By Software Command
Send <Z> command to the scanner.
By ESP
Active
Memory
User-Saved
NOVRAM
Flash
Defaults
Right-click in the configuration window and select
Save to Scanner, Send and Save.
Save Active Settings including Factory for Power-on
Appendices
• Initializes serial configuration commands in
active memory and resets counters to zero.
• Saves all active settings including factory settings to
NOVRAM for power-on (factory settings include but
are not limited to Focus, Gain, Tracking, and
Scan Speed).
By Serial Command
Initialize
<Zp>
Active Memory
and Factory Settings
User-Saved
NOVRAM
Flash
Defaults
Send <Zp> command to the scanner.
By ESP
Right-click in the configuration window and select Advanced, Send and Save,
Including Factory.
A-22
MS-820 Industrial Bar Code Scanner User’s Manual
Defaulting/Saving/Initializing
Initializing
Initializing is a part of all save and default functions. It is also used as a follow-on to
implement serial configuration commands into active memory.
• Initializes serial configuration commands in
<A >
Initialize
active memory and resets counters to zero.
• Does not save settings to NOVRAM.
Active
Memory
By Serial Command
Send <A> after a serial configuration command or
a string of serial configuration commands, for
example, <Kd1><A>.
User-Saved
NOVRAM
Flash
Defaults
By ESP
Right-click in the configuration window and select Save to Scanner, Send No Save.
This will initialize all serial configuration changes that have been made in the current
ESP session.
Loss of Communications
MS-820 Industrial Bar Code Scanner User’s Manual
A-23
Appendices
Making changes to communications with the host such as Baud Rate, Parity, Stop
Bits, LRC, etc. without corresponding changes in linked device(s) can result in the
loss of menu access through If this should occur, you should restore the scanner’s
defaults.
Appendix I
Appendix I — Position Scanner and Bar Code
In positioning the scanner in relation to the bar codes being scanner, consider the following:
• Position the scanner in a place devoid of sunlight, bright lights, or laser light from
other sources.
• Avoid excessive tilt, skew, or pitch. Maximum tilt is determined by label characteristics and the number of decodes required. Maximum skew is ±40°; maximum pitch
is ±50°.1
• Pitch or skew label or scanner a minimum of ±15° to avoid specular reflection, the
return of direct, non-diffused light.2
Skew
axis
Direction
of travel
Appendices
Tilt
axis
Pitch
axis
Scanner
Figure A-6 Scanner/Symbol Position
1. Maximum tilt is determined by label characteristics and number of decodes required.
2. The specular reflection zone is a narrow zone straight out from the scanner in which direct
reflected light from a label can distort the scanner’s ability to distinguish bars from spaces.
A-24
MS-820 Industrial Bar Code Scanner User’s Manual
Position Object Detector
Appendix J — Position Object Detector
In a typical operation, a scanner will wait for bar code data only during a triggered
read cycle. A read cycle is initiated by a “trigger” and can be in the form of a serial
command from the host (internal trigger) or a signal from an object detector (external trigger).
When an object detector (also called a sensor, package detector, etc.) is used, it is set
up so that its beam will bounce off the approaching object and the resulting pulse will
be sent to the scanner to begin the read cycle. Typically, a detector is positioned so
that it will detect the presence of an object before its label can be scanned.
An object detector is mounted in almost any position relative to the object as long as
(1) the object passes within range of the detector and (2) direct or reflected light from
the detector does not interfere with the scanner’s reception.
As the item continues to move down the line, its label moves into the scanner beam
and is read by the scanner.
The drawing below shows a label in the picket fence direction with the object detector
positioned so as not to cause interference.
Appendices
Bar-coded Object
Bar-coded Object
Object
Detector
Scanner
Figure A-7 Object Detector
MS-820 Industrial Bar Code Scanner User’s Manual
A-25
Appendix K
Appendix K — Test Decode Rate
With a Static Label
1. Position a stationary bar code in front of a functioning scanner at the scan distance used in your application.
2. Enter a <C> command to see the decodes per second.
The decode rate is the number of decoded scans per total number of scan. It will
appear at the beginning of the data strings.
Note: You can also enter a <Cp> command to see the percentage of decodes
per scans.
3. Make a note of the decode rate. You will need this when calculating the number of
decodes (see Appendix L — “Formulas for Number of Decodes” on page A-27).
4. End the test by sending the <J> command.
Appendices
Number of Decodes
To ensure reliable scanning, you need to apply a minimum of five decodes to each bar
code. This means that all variables, label speed, read range, etc. are significant.
Note: Variations between labels are common. For this reason, the greater number of
sample bar codes tested, the more likely you are to achieve optimum decode rates.
In general, the number of decodes of a given bar code can be increased by:
• Increasing label height
• Decreasing label length
• Increasing scan rate (spinning mirror speed)
• Slowing label speed
With a Moving Label
Before testing with a moving label, it is highly recommended that you calculate the
expected number of decodes by using the formulas in Appendix L — “Formulas for
Number of Decodes” on page A-27.
Once you’ve mounted the scanner, established a good read rate with a stationary
label, and calculated the number of decodes for your label speed, you can begin
decoding with moving labels.
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MS-820 Industrial Bar Code Scanner User’s Manual
Formulas for Number of Decodes
Appendix L — Formulas for Number of Decodes
To ensure reliable scanning, apply a minimum of five decodes to each bar code. Use
the formulas below to calculate the number of decodes that your label will receive.
If the number of decodes you derive from one of these calculations is less than the
minimum for your application, plug in the minimum number of decodes (5) and solve
for another parameter that might be changed, such as label speed or scans per second.
Note: While the formulas given here solve for the predicted number of decodes, you
may also use the formulas to solve for other parameters that might be changed, such
as label speed, label length, etc.
Single Line Ladder Calculation
Direction of label travel
For single scan line ladder scanning, use the following formula:
Scan Line
LH (Label Height) (ladder formula only) is a measurement of
the height of individual bars.
LS (Label Speed) is the distance per second that a bar code
Figure A-8 Ladder
moves through the scan.
DR (Decode Rate) is the number of decodes per second that
a given bar code receives (as derived from a stationary scan test in Appendix K —
“Test Decode Rate” on page A-26).
Example 1:
LH = 1 inch
LS = 100 inches per second
DR = 900 scans per second
1
ND =  --------- × 900 – 3 = 6 complete decodes
100
1. The -3 component in the formula is included to allow for AGC acquisition, an incomplete first
scan, and an incomplete last scan. This applies only if the number inside the parentheses equals
4 or more. If the number equals 3, then only subtract 2 to derive 1 good scan.
MS-820 Industrial Bar Code Scanner User’s Manual
A-27
Appendices
 LH
-------- × DR – 3 = NS (number of decodes) 1
 LS

Appendix L
Single Scan Line Picket Fence Calculation
For single scan line picket fence scanning use the following formula:
SW – LL )
 (--------------------------× DR – 3 = number of complete decodes 1

LS
Direction of label travel
Example:
LL = 2 inches (including quiet zones)
LS = 100 inches per second
Scan Line
SW = 4 inches
DR = 1000 decodes per second
4 – 2)
 (---------------× 1000 – 3 = 17 complete decodes
 100

Figure A-9 Picket Fence
Appendices
Angled Picket Fence Calculation
The number of complete scans for angled picket fence is
calculated the same as that for picket fence, with the
exception that the scan width is shortened in proportion
to scan tilt.
Direction of label travel
Scan Line
Improving the Number of Decodes
Figure A-10 Angled
Picket Fence
After changing any of the parameters described in this section, recalculate the number
of decodes.
Scan Rate
Scan rate is a function of motor speed and is adjustable. A slower scan rate may allow
greater label range and/or higher decode rates, but at the cost of fewer scans per
label.
Range
Adjusting the label’s range, if possible, is one of the quickest and most effective ways
to improve decode rates. However, in some applications you may need to select a less
than optimum range, or one that is beyond the fringes of the ranges.
Scan Width
Increasing scan width will increase the number of scans in a picket fence oriented
application. Scan width is linked with scan range and changing one will usually require
a change in the other.
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MS-820 Industrial Bar Code Scanner User’s Manual
Formulas for Number of Decodes
Label Speed
Applies to both picket fence and ladder oriented labels. If your application allows it,
slowing label speed (the time in seconds that a label is fully within the scan width of
the scanner) is an effective way to increase the number of decodes.
Label Dimensions, Label Density, and Label Ratio
Not usually an option in most applications, but changes to label parameters can affect
number of decodes calculations and possibly decode rates.
If your application allows it, shortening the length of a picket fence label means the
label will be in the scan range longer and hence receive a greater number of scans.
Increasing the height of a ladder label means it will receive more scans. Changing
label density and/or bar code ratio is another way ranges, decode rates, etc. can be
altered.
Gain and Tracking
These adjustments, typically made by qualified technicians, are referenced in the
Scanner Setup menu (see “Save Active Settings including Factory for Power-on” on
page A-22). Changes to tracking will generally have a limited affect on decode rates.
Appendices
MS-820 Industrial Bar Code Scanner User’s Manual
A-29
Appendix M
Appendix M — Operational Tips
Do:
• Check inputs (label speed, length, height, etc.) to ensure the desired number of
decodes per label.
• For optimum decodes, mount scanner so that your labels pass through the center of
the depth-of-field (minimum/maximum range). You find the center by moving your
label in and out during a read rate test.
• Avoid excessive tilt, pitch, and skew of the bar code label.
• Check the bar code label for readability by doing a decode rate test. If there is any
question about the label's readability, contact your Microscan representative at
helpdesk@microscan.com.
• After changing any parameter that might affect decode rate, repeat decode rate
test.
Appendices
• Clean the scanner window with a clean, dry Q-tip or cotton cloth on a regular basis.
Do Not:
• Aim the scanner into direct light or sunlight.
• Aim the scanner into an external object detector or other light-emitting device.
• Obstruct the scanner window with mounting hardware or other objects.
• Connect chassis of scanner and host to different ground potentials.
• Operate the scanner in excessive temperature environments.
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MS-820 Industrial Bar Code Scanner User’s Manual
Interface Standards
Appendix N — Interface Standards
Interface Standards, established by the Electronic Industries Association (EIA), specify such things as the signaling voltage levels, maximum cable lengths, and number of
drivers. With Microscan devices, selection of interface is made by pin assignment and,
in the case of the host communications, by software switching between RS-232 and
RS-422. Microscan devices use RS-232, RS-422, and RS-485 multidrop.
RS-232
RS-232 defines an interface between two devices such as, for example, the scanner
and host. It differs from the other interfaces by dedicating individual pins to specific
functions and by requiring both devices to share a common ground line. Since both
device chassis are connected to a common ground, a ground loop potential and the
possibility of noise interference exists. Therefore cable lengths are limited to a maximum of 50 feet (19.7m). Despite being the most limited, this interface is used frequently because of the large installed base of RS-232 equipment.
RS-422
RS-485
RS-485, like RS-422, can transmit up to 4000 feet (1219 m) using differential voltages but unlike RS-422, its transmitters are turned off until a request for data is
received from the host. RS-485 is used exclusively in multidrop protocol.
MS-820 Industrial Bar Code Scanner User’s Manual
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Appendices
RS-422, unlike RS-232, measures signals deferentially; that is, the receiver looks at
the potentials between the two receive (or transmit) wires rather than the potential
between signal and ground. As a result, cables, if shielded, can be up to 4000 feet
(1219m) in length. Like RS-232, RS-422 communication is designed for only two
devices on a single line and must have a common ground. It can be used wherever
RS-232 is used.
Appendix O
Appendix O — Multidrop Communications
This appendix describes the rules for setting
up a concentrator or controller to communicate with a scanner in standard Multidrop
protocol.
The diagram to the right shows a typical Multidrop network in which 1 to 50 scanners can
communicate with a host via an intermediary
device, a concentrator or a controller.
Host
Concentrator
Polled Protocol
Multidrop ONLY
RS-485 Interface
Scanner 01
Scanner 02
Scanner 03
Appendices
Configure Your Scanner for Multidrop
1. With the scanner connected to the host, do Retrieve Scanner Settings as in
Step 5 —“Retrieve Scanner Settings” on page 2-6.
2. Select Multidrop in the Protocol configuration menu.
You will see the following message:
Warning. You must change your preamble and postamble characters so that they are not CR or NULL.
This allows data to move through the concentrator without interference.
3. Click OK.
4. Next, go to Preamble Characters (still in the Protocol menu) and double-click
on Characters.
5. This will open up an ASCII character table. Select any character other than CR.
For example, select LF.
6. Repeat the above for Postamble.
7. Check the multidrop address. Enter a number from 01 to 50.
8. Right-click in the window and select Save to Scanner and Send and Save.
9. Your scanner is now in multidrop. From here on, you will need to use the concentrator to relay commands and data between the scanner or scanners and the host.
10. Next, go to “Connect to Scanner via the Concentrator” on page A-33.
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MS-820 Industrial Bar Code Scanner User’s Manual
Multidrop Communications
Connect to Scanner via the Concentrator
You will need a multidrop concentrator and the required power supplies and cabling to
communicate with your scanner(s).
1. From the Communications drop down menu,
select Configure Multidrop to bring up the Multidrop Settings dialog.
2. If necessary, change the default address to match
the address of your multidropped scanner and
click OK.
If the host serial port is not connected in ESP, you
will see the following popup message:
ESP is not currently connected to the multidrop concentrator. Do you wish to establish a connection now?
3. Click Yes.
You will see a Serial Communication Parameters dialog as shown on the
next page.
Notice that the Force Connection option is checked. Do not change this.
Appendices
4. Select the concentrator’s host port communications
settings.
When you click Connect, you will be connecting to
your concentrator, which can then relay commands to
the scanner whose address was set in the Multidrop
Settings dialog.
5. Click Connect.
6. You should see the CONNECTED message in green at
the bottom of the window along with the scanner’s
Multidrop address.
7. Do Retrieve Scanner Settings to upload scanner’s
configuration (Step 5). If upload fails, return to the
Serial Communication Parameters
dialog and make the corrections.
8. Follow the same procedure for connecting other scanners to your
multidrop network.
Note: For more information, see your scanner user’s manual or Microscan’s MS-5000
Multidrop Concentrator User’s Manual, 83-005000.
MS-820 Industrial Bar Code Scanner User’s Manual
A-33
Appendix O
Polling Sequence
Data that is transmitted to the host (bar code data, noread messages, counters, etc.)
via concentrators is solicited by poll requests from the host.
The polling sequence example by poll address 1E (ASCII hex value for Scanner 02)
and a REQ (request). The scanner responds by first transmitting its own address, 1E,
followed by a STX (start of text) character, and then the data. Next it transmits an
ETX (end of text) character and an LRC (longitudinal redundancy check) character.
If the concentrator (or controller) receives the data from the scanner and is able to validate it with an LRC calculation, it responds with an ACK (acknowledgment). If the scanner in turn receives the ACK, the scanner ends this exchange with a RES (reset).
Start of Sequence
Concentrator
Appendices
Scanner 02
End of Sequence
RES 1E REQ
ACK
1E STX DATA ETX LRC
RES
Figure A-11 Polling Sequence
Polling Reset
• If the scanner has no information, it responds to a poll request by transmitting a
RES (reset).
• If the scanner receives a NAK instead of the ACK after transmitting its data string, it
will re-attempt to send the data string up to three times. If the scanner still does
not receive an ACK, it will send a RES (reset) and discard the data in its buffers.
• If the scanner transmits data to the concentrator and the concentrator responds
with an ACK or NAK, but the scanner doesn’t receive the concentrator’s response,
the scanner will timeout and send a REQ to the concentrator and request another
response. If after three retries (the number of times it transmits a REQ to the concentrator) the scanner receives no response, it ends the transmission with a RES
(reset).
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MS-820 Industrial Bar Code Scanner User’s Manual
Multidrop Communications
Select Sequence
Unlike poll requests, select commands always originate from the host and consist of
serial configuration or operation commands to devices that are configured in Multidrop. The scanner complies with the command when it is polled during the cycle.
Start of Sequence
Concentrator RES 1F REQ
Scanner 02
End of Sequence
STX <T>ETX LRC
1F ACK
RES
1F ACK
Figure A-12 Polling Sequence
Select Reset
If the scanner receives bad data from the concentrator, it transmits a SEL (its select
address) and a NAK to the concentrator. The concentrator re-transmits the data up to
three times. The concentrator will end the sequence with a RES (reset) if no ACK is
received.
MS-820 Industrial Bar Code Scanner User’s Manual
A-35
Appendices
A RES (reset) is the first command in the select sequence. The 1F hex is the select
address associated with Scanner 02 address. It is followed by a REQ (request). The
scanner responds with its own select address, 1F hex, and an ACK (acknowledge).
The concentrator then transmits an STX (start of text), the data (in this case a <T>),
an ETX (end of text), and an LRC character.
The scanner replies by transmitting its own address, followed by an ACK, acknowledging receipt of the command. Upon receipt of an ACK, the concentrator concludes the
successful exchange with a RES.
In the example above, the scanner only acknowledges a trigger counter request from
the concentrator. It does not respond to the trigger counter request until a subsequent poll. For example, if the scanner’s trigger count was 12 at the time the trigger
counter request was received, on a subsequent poll it would send 02T/00012. (The 02
at the beginning of the string is the scanner’s address.)
Appendix O
Table A-12 Multidrop Addresses
Multidrop
Address
Appendices
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
A-36
Poll
Character
ASCII
HEX
^\
1C
^^
1E
SP
20
"
22
$
24
&
26
(
28
*
2A
,
2C
.
2E
0
30
2
32
4
34
6
36
8
38
:
3A
<
3C
>
3E
@
40
B
42
D
44
F
46
H
48
J
4A
L
4C
Select
Character
ASCII
HEX
^]
1D
^1F
!
21
#
23
%
25
'
27
)
29
+
2B
2D
/
2F
1
31
3
33
5
35
7
37
9
39
;
3B
=
3D
?
3F
A
41
C
43
E
45
G
47
I
49
K
4B
M
4D
Multidrop
Address
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
Poll
Character
ASCII
HEX
N
4E
P
50
R
52
T
54
V
56
X
58
Z
5A
\
5C
^
5E
`
60
b
62
d
64
f
66
h
68
j
6A
l
6C
n
6E
p
70
r
72
t
74
v
76
x
78
z
7A
|
7C
~
7E
MS-820 Industrial Bar Code Scanner User’s Manual
Select
Character
ASCII
HEX
O
4F
Q
51
S
53
U
55
W
57
Y
59
[
5B
]
5D
_
5F
a
61
c
63
e
65
g
67
i
69
k
6B
m
6D
o
6F
q
71
s
73
u
75
w
77
y
79
{
7B
}
7D
D
7F
Glossary of Terms
Appendix P — Glossary of Terms
Bar Code Density. Number of characters per inch or other unit of measure.
Baud Rate. The number of discrete signal events per second. Bits per second.
Capture. The act of grabbing or recording a frame by an sensor. A frame or succession
of frames that are captured.
Channel. A high-speed pathway between the computer and the control units of the
peripheral devices.
Check Digit. A Modulus 43 or Modulus 10 digit that is added to the bar code message
for additional data integrity.
Command Processing. Allows the user to enter the ESP program from the auxiliary
port or send serial string commands from the auxiliary port.
Configuration. A setup or process of changing a scanner’s settings to conform to a
specific application.
Concentrator. Intermediary device that relays data from scanners to a host and
commands from the host to the scanner or other devices.
MS-820 Industrial Bar Code Scanner User’s Manual
A-37
Appendices
Active On (ION). An optoisolated input that’s logically “on” when current flows through
the connection points.
Active Off (IOFF). An optoisolated input that’s logically “on” when no current flows
through the connection points.
Analog Gain Adjustment (AGC). Adjustment to signal strength that seeks to maintain a constant level regardless of the range of the bar code label.
Application Record. A variation of UCC/EAN-128 which adds an application identifier
to label data, including user-definable separators, brackets, and padding.
Autocalibration. A routine that cycles through various optical settings and selects the
combination that produce the best read rate.
Autodiscriminate. The ability to decode several different bar code symbologies without changing configuration.
Auto Range. Outward focus of the scanner until an object is sensed by signal strength.
The scanner then begins searching for a decodable label.
Auxiliary Port. RS-232 connections to an auxiliary terminal or device for remote
viewing. the transfer of data to and from the host, and under certain conditions a configuration port.
Bar Code. The symbol used for recognition by a bar code scanner. An array of parallel
bars and spaces of varying widths that conform to recognized standards and can be
decoded and displayed as serial data.
Bar Code Data. The information that is transmitted from a decoded bar code symbol.
Bar Code Label. The physical media on which a bar code symbol is presented.
Appendix P
Connector. Physical device (plug or socket) on a device or cable to provide in/out
connectivity for various circuits and pins.
Counter. Memory space provided to keep track of scanner events.
Daisy Chain. Linkage of master and slave scanners to allow data to be relayed up to
the host via auxiliary port connections.
Decode. A good read. The successful scanning and decoding of the information
encoded in a bar code label.
Default. Restores ROM or Flash settings, initializes serial commands and resets all
counters.
Delimited. A command or field that is bracketed by pre-defined characters.
Appendices
Decode Rate. The number of good reads per second decoded by the scanner.
Depth of Field. The distance between the minimum and maximum range in which a
scanner can read bar code labels.
Discrete I/O. Inputs and outputs characterized by discrete signal transitions from one
voltage level to another so that digital switching can occur.
EPROM. Erasable, programmable, read only memory.
Embedded Memory. Onboard memory device such as EPROM or flash.
End of Read Cycle. The time or condition at which the scanner stops expecting label
information to decode.
External Edge. Allows a read cycle to be initiated by a trigger signal from an object
detector when it detects the appearance of an object (rising edge). The read cycle
ends with a good read, a timeout, or a new trigger.
External Level. Allows a read cycle to be initiated by a trigger signal from an object
detector. The read cycle ends when the object moves out of the detector’s range.
Falling Edge. A change of state (to inactive) associated with a level trigger in which
the scanner stops searching for bar code symbols. (See Rising Edge.)
Fixed Code Length. Increases data integrity by ensuring that only one label length
will be accepted.
Flash Memory. Memory that can be changed by downloading new code.
Focal Length. The distance measured from the scanner to the center of the depth of
field, or focal point.
Focus. The point at which the tip of the scan beam is at its narrowest.
Frame. The total area scanned in an image sensor.
Full Duplex. Auxiliary port data is sent directly to the host but not displayed on the
auxiliary port screen.
Gain. Optimal signal strength.
Good Read. A decode. The successful scanning and decoding of the information
encoded in a bar code label.
Half Duplex. Auxiliary port data is sent directly to the host and displayed on the auxiliary port screen.
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MS-820 Industrial Bar Code Scanner User’s Manual
Glossary of Terms
Host. A computer, PLC, or other device that is used to execute commands and process data and discrete signals.
Host Port. The pins or connections on a scanner or other device that physically connect with a host and—using the RS-232, RS-422, or RS-485 standards—pass data and
serial commands from one device to another.
Initialize. Implement serial configuration commands into the scanner’s active memory.
MS-820 Industrial Bar Code Scanner User’s Manual
A-39
Appendices
Input. A channel or communications line. Decoded data or a discrete signal that is
received by a device. See Output.
Intercharacter Delay. The time interval in milliseconds between individual characters transmitted from the scanner to the host.
Intercharacter Gap. The extra space between the last element of one character and
the first element of the adjacent character of a specific bar code symbol.
IrDA. Infrared Data Association which promotes interoperable, infrared data interconnection standards.
Label Height. Regardless of orientation, the measurement taken along the length of
a label’s individual bars.
Label Length. Regardless of orientation, the measurement taken across the label's
bars from one end to the other, including the quiet zone.
Label Speed (LS) is the distance per second that a label moves as it travels through
the scan lines.
Label Transitions. The transition of bars and spaces on a label, used to detect the
presence of a label on an object.
Ladder Label Orientation. A bar code label in which the bars are parallel to the
label’s direction of travel.
Large Intercharacter Gap. Allows the scanner to read symbols with gaps between
bar code characters that exceed three times (3x) the narrow element width.
Laser Framing. Setting scan width size by adjusting the on/off duration of the laser
beam.
Laser On/Off. When enabled, the laser is ON only during the read cycle, provided
the scanner is enabled for a Serial or External trigger.
LED. Light emitting diode.
Longitudinal Redundancy Check (LRC). An error-checking routine that verifies the
accuracy of transmissions.
Master Scanner. First scanner in a daisy chain mode and linked directly to the host
and in tandem to slave scanners.
Matchcode. The ability to compare bar code labels being scanned against a master
label that is stored in the memory of the scanner.
Embedded Menu. Configuration options embedded in the scanner’s erasable memory.
ESP-MP Menu. Easy Setup Program—Multiple Platform. Configuration program that
runs in Windows-based operating systems 95 and above.
Appendix P
Appendices
Mil. One thousandths of an inch or 0.0254 mm. In bar-coding, a measurement standard that identifies a bar code label by the width of its narrowest element.
Mismatch. An event that occurs when the scanned bar code label does not match the
master label that is stored in the memory of the scanner.
Multilabel. A scanner mode which allows a scanner to read more than one bar code
label in a single read cycle.
Multidrop. A communications protocol for networking two or more scanners or other
devices with a concentrator (or controller) and characterized by the use of individual
device addresses and the RS-485 standard.
Narrow-bar-width. The width of the narrowest bar of a given label, expressed in
thousands of an inch (or mils).
Narrow Margins. Allows the scanner to read symbols with quiet zones less than 8
times the width of the narrow bar element.
Non-delimited. A command that is not bracketed by pre-defined characters.
Non-volatile RAM (NOVRAM). Random Access Memory that is available on poweron; that is, after power to the unit has been recycled.
Noread. A non-read. A condition that occurs when the scanner is set up to decode
labels but no label is scanned during the read cycle.
Normally Closed. A discrete output state that is only active when open.
Normally Open. A discrete output state that is only active when closed.
NOVRAM. Non-volatile random access memory. Data that is saved for “power-on” is
saved to NOVRAM.
Number of Decodes. The number of times a bar code label is scanned by the scanner during one pass through the laser beam.
Object Detector. A photo electric device used to sense the presence or absence of an
object (also referred to as a package detector).
Output. A channel or communications line. Data or discrete signals that are transmitted or displayed by a device.
Output Format. The modification of data output according to a user-defined index
of Extraction and Insertion commands.
Parity. An error detection routine in which one data bit in each character is set to 1 or
0 (zero) so that the total number of 1 bits in the data field is even or odd.
Picket Fence Label Orientation. A bar code label in which the bars are perpendicular to the label’s direction of travel.
Pitch. Label (or scanner) rotation around the center of a line perpendicular to the
label’s bars.
Point-to-Point. A protocol consisting of a single communications event, typically
used to connect a bar code scanner to a terminal or host computer.
Port. Logical circuit for data entry and exit. (One or more ports may be included
within a single connector.)
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MS-820 Industrial Bar Code Scanner User’s Manual
Glossary of Terms
Protocol. The rules for communication between devices, providing a means to control
the orderly flow of information between linked devices.
Quiet Zones. Specified “clear” (non printed) areas immediately before and after the
bar code symbol. The area is usually white (for black and white bar code) and at least
10 times the width of the narrowest bar, as measured in thousands of an inch. The
zones can be other than white as long as their densities remain consistent and they
have the required contrast relative to the bars.
RAM. (Random Access Memory) Memory that is lost after power is recycled to the unit.
Raster. Multiple, stacked scans produced by a separate oscillating mirror or by a
spinning mirror with varying facet angles.
Read Cycle. A programmed period of time or condition during which the scanner will
accept bar code label input.
Read Range. The distances in which a label can be reliably read, as measured from
the front of the scanner. See “Depth of Field.”
Relay. An electrical switch that allows a low power to control a higher one.
Reset. Sets all counters to zero.
Scanner. A scanning device that is comprised of a scan head and a decoder integrated in one package.
Scan Rate (SR) The number of decodes per second that a given scanner is capable of
casting.
Scan Width (SW) is the width across the scan beam at a given distance from the
scanner in which a label can be read.
Send. Transmit data from one device to another.
Separator. A character that separates data fields.
Serial Commands. Online data strings such as <D> or <P> sent from a host or auxiliary terminal to a scanner or other device.
Serial Configuration (Host Configuration). Serial command specifically for changing
configuration and distinguished from operational command by the fact that they modify the non-volatile for power up configuration.
Skew. Label (or scanner) rotation around the center of the skew axis.
Slave Scanner. Linked to the master or preceding scanner in a daisy chain and relays
bar code data to the host. See “Daisy Chain.”
Specular Reflection Zone. The narrow zone straight out from the scanner in which
direct reflected light from a label can distort the scanner’s ability to distinguish bars
from spaces.
Supplemental. A character or data string that is appended to the main bar code
symbol.
MS-820 Industrial Bar Code Scanner User’s Manual
A-41
Appendices
Rising Edge. A change of state (to active) that initiates (and in some cases ends) a
read cycle with a new trigger, an edge trigger, or the leading edge of a level trigger.
(See Falling Edge.)
ROM. (Read Only Memory) Memory that cannot be changed.
Appendix P
Symbol. A bar code. A decodable unit of information that is recognized by a bar code
scanner.
Symbology. A code type, such as Code 39 or Code 128, with special rules to define
the widths and positions of bars and spaces to represent specific numeric or alphanumeric information.
Symbology ID. An AIM standard prefix character that identifies the bar code type.
Tilt. Label (or scanner) rotation around the centerline of the scan beam.
Timeout. A user-selected period of time that ends a scanner's read cycle.
Tracking. Adjustment of the precision of analog-to-digital conversion.
Transmission. The transfer of data over a communications channel.
Appendices
Transmit. Send or convey signals or information from one device to another.
Transparent. Data is passed between the auxiliary port and the host with keyed data
echoed to the auxiliary port
Trigger. A signal, transition, or character string that initiates a read cycle.
Watchdog Timer. A security device that detects system crashes and attempts to
reset the scanner.
Watchdog Reset. A reset that is forced whenever the software locks up.
Wild Card. User-defined character entered into a master label to permit matches
with variable characters.
A-42
MS-820 Industrial Bar Code Scanner User’s Manual
Index
A
About This Manual i-ix
Active State, discrete outputs 9-5
AGC Gain Adjustment 6-7
AGC Mode 6-7
AGC Sampling 6-9
AGC Transition Sample Rate Threshold 6-9
AGC Transitions Sample Counter 6-9
Application Record Brackets, EAN-128 5-22
Application Record Padding, EAN-128 5-23
Application Record Separator, EAN-128 5-22
Application Record, EAN-128 5-21
Approvals i-xi
As Soon As Possible 8-5
ASCII Table, including control characters
A-14
Auto Connect 1-7
Autodiscrimination, Code Types 5-27
Aux Port 2-5
Auxiliary Port Parameters 2-5
B
C
Caution Summary i-xiii
CDRH i-xi
CE Compliance i-xi
Check Digit
Codabar 5-13
Code 39 5-8
I 2 of 5 5-14
Code 39 5-8
D
Daisy Chain ID 2-12
Daisy Chain Mode 2-9
Daisy Chain, IB-131 A-9
Data Bits
aux port 2-11
host port 2-4
Decode Rate A-23, A-24
Decodes/Second Test 11-10
Default Commands A-17
Default Flash Defaults to Active Memory and
for Power-on A-18
Default NOVRAM Defaults to Active Memory
A-17
MS-820 Industrial Bar Code Scanner User’s Manual
I-1
Index
Background Color 5-7
Bar Code Symbologies A-3
Baud Rate
aux port 2-11
host port 2-4
Beeper Status 8-12
BSMI i-xi
Code 93 5-24
Code Length
I 2 of 5 5-15
Code Types
by embedded menu 5-4
by ESP 5-2
by serial command 5-3
COM1 1-6
Communication Protocol Commands A-15
Communications
by Embedded Menu 2-3
by ESP 2-2
by serial command 2-2
Communications Port 1-6
Communications, loss of A-20
Communications, Specifications A-3
Continuous 6-7
Continuous Read 1-11, 4-4
Continuous Read 1 Output 4-5
Control Characters A-13
Control/Hex Output 8-14
Counters 11-6
Counts 10-13
cUL i-xi
Index
Defaulting/Saving/Initializing A-17
Device Control 11-12
DFALT-C 10-7
DFALT-F 10-7
Diagnostics
by embedded menu 10-3
by ESP Menu 10-2
by serial command 10-2
Disclaimer i-ii
Discrete I/O
by Embedded Menus 9-2
by ESP Menu 9-2
by serial command 9-2
E
Index
EAN-128 5-21
Easy Setup Program i-ix
Easy Setup Program - Multiple Platform 1-4
Electrical Specifications A-5
Electrical, IB-131 A-8
Emissions, Specifications A-2
End of Read Cycle 4-11, 8-6
End Read Rate Test 11-11
Enter Master Label Data 5-26, 7-11
Environmental, Specifications A-2
ESP (Easy Setup Program) i-ix
External Trigger 4-10
External Trigger Edge 4-7, 4-8
External Trigger Level 4-6
F
FCC i-xi
File Transfer 11-5
Fixed Code Length
Codabar 5-12
Code 128 5-20
Code 39 5-9
Code 93 5-24
PDF417 5-19
Flash memory i-ix
Focus 6-4
Formulas for Number of Decodes A-24
From Host 3-7
I-2
Full ASCII Set 5-10
Full Duplex Mode 2-8
G
Gain 6-6, A-26
General Specifications A-2
Glossary of Terms A-32
Good Decode Reads 4-9
Good Read/Match Counter 11-7
Good Read/Match Counter Reset 11-7
H
Half Duplex Mode 2-7
Hardware Required 1-2
Hex Output 8-14
High Temperature Threshold 10-8
Host Commands i-x
Host Connector (25-pin) A-7
Host Connector, 25-pin A-5
Host Port Parameters 2-4
Hours Threshold 10-10
I
IB-131 Interface Module A-7
Immunity A-2
Initializing (resetting) Commands A-20
Install ESP-MP 1-4
Intercharacter Delay 3-11
Interface A-3
Interface Standards A-28
Interleaved 2 of 5 5-14
IrDA Port 2-12
K
K Commands A-12
Keystrokes i-x
L
Label Density A-26
Label Dimensions A-26
Label Height A-24
Label Ratio A-26
MS-820 Industrial Bar Code Scanner User’s Manual
Label Speed A-24, A-26
Ladder Calculation, single line A-24
Large Intercharacter Gap 5-9
Codabar 5-12
laser beam i-xiii
Laser High Message 10-5
Laser High Warning 10-5
Laser Light, Specifications A-2
Laser Low Message 10-6
Laser Low Warning 10-6
Laser Scanning 11-12
Laser Scanning, disable 11-12
Leading Edge 6-7
Lifetime Hours 10-10
Lifetime Threshold 10-10
Longitudinal Redundancy Check 3-9
Low Temperature Threshold 10-9
LRC 3-9
M
N
Network Connector (25-pin) A-7
New Master Pin 7-15
New Trigger 4-13
Noise Interference A-28
Noread Counter 11-6
Noread Counter Reset 11-6
Noread Message 8-8
Noread, discrete outputs 9-4
NOVRAM Reset Warning Status 10-7
NOVRAM/Default Warnings 10-4
Null Modem Cable 1-2
NULs, defining A-13
Number of Decodes A-23
Number of Labels 4-15
Number to Output On 9-5
NVRAM-C 10-7
NVRAM-D 10-7
Index
Master Label
by ESP 7-10
Master Label Data
Delete 7-13
Enter 5-26, 7-11
Request 7-12
Request All 7-12
Store Next Label Scanned 7-14
Master Label Database 7-10
Master Label Database Size 7-10
Match Counter 11-7
Match Length 7-7
Match Start Position 7-6
Match, discrete outputs 9-4
Matchcode
by Embedded Menu 7-3
by ESP 7-2
by serial command 7-2
Matchcode Setup 7-5
Menu Mode 2-12
Mirror Type A-3
Mismatch Counter 11-7
Mismatch Counter Reset 11-7
Mismatch or Noread, discrete outputs 9-4
Mismatch, discrete outputs 9-4
Model Selection 1-5
Motor Off 11-12
Motor On 11-12
Multidrop 3-6
Multidrop Addresses A-31
Multidrop Communications A-29
Multidrop, IB-131 A-9
Multilabel 4-14
Multilabel Decode Rate Test 11-10
Multilabel Percent Test 11-10
Multilabel Separator 4-15
O
Object Detector A-22
Operating Life A-2
Operating Temperature 10-8
Operational Serial Commands 11-3
Operational Tips A-27
Output 1 9-4
Output 2 9-6
Output 3 9-6
Output Data
MS-820 Industrial Bar Code Scanner User’s Manual
I-3
Index
by Embedded Menu 8-3
by ESP Menu 8-2
by serial command 8-3
Output Data Format 3-12
Output Format, EAN-128 5-21
Output On, discrete outputs 9-4
Output-1 11-12
Output-2 11-13
Output-3 11-13
Index
P
Package detector A-22
Padding 5-23
Parity
aux port 2-11
host port 2-4
Part Number 11-8
Partial Length 8-10
PDF Information 11-11
PDF417 5-19
Percent PDF Read Rate Test 11-11
Percent Test 11-10
Picket Fence Calculation
Angled A-25
Single Scan Line A-25
Pitch A-21
Point-to-Point
standard 3-4
with RTS/CTS 3-5
with RTS/CTS & XON/XOFF 3-5
with XON/XOFF 3-5
Polling Mode D 3-5
Polling Sequence A-29
Position Scanner and Symbol A-21
Postamble 3-13
Power Connector (3-pin) A-7
Power Supply 1-2, 1-3
Powerups 10-13
Preamble Status 3-12
Present Operating Temperature 10-12
Program Values 1-8
Protocol 3-4
by embedded menu 3-3
I-4
by ESP 3-2
by Serial Command 3-2
Protocol Commands A-15
Pulse Width, discrete outputs 9-5
R
Range 1-11, A-25
Raster Mirror A-3
Raster Sweeps Before Decode Attempt,
PDF417 5-19
Read Cycle 4-11
by ESP 4-2
Read Cycle/Trigger
by embedded menu 4-3
by serial command 4-2
Read Rate 11-9, 11-10
Reset A-20
Reset Flash Defaults to Active Memory A-17
Resets 10-13
Response Timeout 3-10
Restore Commands A-17
Restore Flash Defaults to Active Memory
A-17
Restore Flash Defaults to Active Memory and
for Power-on A-18
Restore NOVRAM Defaults to Active Memory
A-17
Retrieve as Program 1-8
Retrieve Scanner Settings 1-8
Retrieve Settings 1-8
RS-232 A-28
RS-422 A-28
RS-485 A-28
S
Safety Certifications A-4
Safety Class A-2
Safety Labels i-xii
Save Active Settings except Factory for Power-on A-19
Save Active Settings including Factory for
Power-on A-19
Save Commands A-17
MS-820 Industrial Bar Code Scanner User’s Manual
Stop Bits
aux port 2-12
host port 2-4
Supplementals 5-17
Supplementals Type 5-18
Symbology ID 5-6
T
Test Range 1-11
Tilt A-21
Time Since Last Reset 10-11
Timeout
read cycle 4-12
Timeout Duration, Read Cycle 4-13
Timeout or New Trigger 4-13
Tracking A-26
Transition Counter 6-9
Transition Sample Counter 6-9
Transition Sample Rate Threshold 6-9
Transparent Mode 2-6
Trigger Connector (4-pin) A-7
Trigger Counter 11-6
Trigger Counter Reset 11-6
Trigger Filter Duration 4-9
Trigger Mode 4-4
TüV i-xi
U
UCC/EAN-128 5-21
UL i-xi
UPC/EAN 5-16
User Defined Multidrop 3-8
User Defined Point-to-Point 3-6
Utilities
by ESP 11-2
by serial command 11-3
Utility Commands A-12
Utility Serial Commands, summary 11-3
Index
Scan Range 1-11
Scan Rate A-3, A-25
Scan Width A-25
Scanner Connector (15-pin) A-7
Scanner Range
Range 1-10
Scanner Setup
by Embedded Menu 6-3
by ESP 6-2
by serial command 6-2
Scanner Values 1-8
Scanning Parameters A-3
Select Sequence A-30
Sensor A-22
Separator
EAN-128 5-22
UPC/EAN 5-18
Sequence On Every Mismatch 7-9
Sequence On Noread 7-8
Sequential Direction 7-6
Serial Command Beep 8-13
Serial Command Echo 8-13
Serial Command Format A-12
Serial Command Status Request A-13
Serial Commands
Code Types 5-3
Diagnostics 10-2
Matchcode 7-2
Output Data 8-3
Read Cycle-Trigger Mode 4-2
Utilities 11-3
Serial Commands, concatenating A-13
Serial Configuration Commands A-12
Serial Configuration Commands, summary
A-10
Serial Data 4-8
Serial Utility Commands A-12
Serial Verification 8-13
Skew A-21
Special Characters in Embedded Menus A-13
Special Characters in Serial Commands A-13
Specular reflection A-21
Stand Alone, IB-131 A-8
W
Warning Message Status 10-4
Warning Messages, diagnostics 10-4
Warning Summary i-xii
MS-820 Industrial Bar Code Scanner User’s Manual
I-5
Index
When to Output Bar Code Data 8-5
Wild Card Character 7-7
Windows NT i-ix
Z
Index
Zero Position 6-4
I-6
MS-820 Industrial Bar Code Scanner User’s Manual
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