Opticon LMD 1135 user manual Tips for Verifying the Presence of a Bar Code

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Manual No. 25-ULPNR102-01; Mar, 2005

LMD 1135 Laser Fixed Mount Scanner

Tips for Verifying the Presence of a Bar Code

If the scanner is operated in the “trigger enabled” mode and the trigger is activated, one of three conditions may occur:

A bar code is scanned and decoded.	Decoded data is
	transmitted
A bar code is scanned but is not decoded	No data is transmitted
(e.g., print quality was poor)
No bar code is present	No data is transmitted

In some applications, when no data is transmitted, it may be important to know why. Was there a bar code present that could not be decoded, or was no bar code present at all?

This requirement is common in applications such as automated blood analysis equipment. Test tubes containing blood samples from many different people are loaded into a rack for automatic analysis. The bar code on each tube ties that sample and the results back to a specific individual. If no bar code data is transmitted it is critical to understand the reason.

Your Opticon scanner, when operated in the Trigger Enabled mode, can be programmed to transmit an error message indicating whether or not a bar code was present. See Section 33 of Appendix C of this manual for details.

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Contents Manual No -ULPNR102-01 March OSE Command Set User’s ManualPage Contents Technical Specifications Configuring the ScannerScanner Servicing and Maintenance Introduction and Getting StartedSection Introduction and Getting Started Quick Start-Up ProcedureProduct Overview Page Physical Specifications Section Technical SpecificationsOptical Specifications Avoid specular reflection in the dead zone +/- 8 degrees Electrical Specifications JAN 13 R = 30 mm 1.2 orRS232 Communications Specifications Connector Pin-outsRS232 Signal Level RS232 Transmit / Receive Character FormatEnvironmental Specifications Pin No SignalOrdering Information ModelSection Positioning the Scanner for Optimum Performance Achieving Optimum PerformanceDistance to the Bar Code Depth-of-FieldAvoiding Specular Reflection Distance Max From Window WidthMeasuring Scanner Performance Quality Bar Code LabelsApplication Notes Tips for Achieving High Throughput Tips for Insuring Highest Data IntegrityTips for Verifying the Presence of a Bar Code Section Configuring the Scanner Programming Menus & CommandsDefault Settings Parameter Factory Default SettingSection Application Engineering Support Technical Assistance and SupportCommon Causes of Poor Performance Modified and/or Customized ScannersSection Scanner Labeling Section Scanner Servicing and MaintenanceIEC 825-1 Class 1 Laser Device Appendices ESC Computer Command CR Appendix aReset All Defaults U2 Command U2 What if you make a mistake?Global Defaults Symbology SelectionOptions for UPC Options for EAN-8 & EAN-13Options for Code Select Symbology for Prefix/SuffixPrefix/Suffix of Numeric Characters Prefix/Suffix of Alpha CharactersSetting the Trigger & Auto-Trigger Selecting the Read ModeParallel Read Mode HandshakingScanner Timeout Trigger Enabled Xmit Error Trigger Enabled Mode onlyMode Quiet Zone OptionsAppendix C Global Default & Scanner Configurations Command DescriptionComputer Including prefix/suffixSymbology Selection Description CommandSymbologies Bar CodeOnly EAN 13/8 +2 Add/Activate Specific Bar Code Symbologies START/ENDAdd/Activate Specific Bar Code Symbologies Delete/Deactivate Specific Bar Code SymbologiesDisable all symbologies Bar Code Command Description Options for UPCOptions for EAN-8 & EAN-13 Options for Code 39 & IT Pharmaceutical IT Pharmaceutical, enable Transmit of leading a Options for Codabar NW-7 Codabar NW-7 Format Options for Interleaved & Industrial 2 5 Format Standard and InterleavedOptions for Iata String formatMeaning of Acronym Number of digits 15 totalOptions for Code-128 / EAN-128 Options for Code-93Disable fixed length all Fixing the Number of DigitsCreating a Prefix and/or Suffix Setting Prefixes Identifying the Symbology UPC-E +2 or +5MSI/Plessey Setting Suffixes Identifying the Symbology Bar Code Command Description Direct Input of Numeric Characters Direct Input of Alpha Characters Direct Input of Alpha Characters Lower Case ETB Direct Input of Control CharactersSUB Direct Input Characters Misc Bar Code Command Description Code Identification & Characters/Digits Transmitted START/ENDCommunication Parameters Communication Parameters Handshaking TerminalMs intercharacter delay Disable buzzer Buzzer OperationSetting the Trigger & Auto-Trigger Functions Positive & Negative Bar CodesSelecting the Read Mode Trigger Function Enabled S8 Trigger Function Disabled S7Add-on Wait Mode Applies to UPC/EAN only Parallel Read ModeParallel labels only Scanner Timeout Trigger Enabled Mode only Multiple Read Reset Time Quiet Zone Options Redundant Decoding Transmitting Error Indications Trigger Enabled only Error Messages No decode / no labelGood Read LED Operation Appendix D Appendix E