Allen-Bradley 2755 Manuel d'utilisateur

ALLEN-BRADLEYBulletin 2755Hand-Held Scannerwith RS-232 Option(Catalog No. 2755-G3-D or -G6-D)User Manual

Using this ManualChapter 11–3This manual contains the following caution andwarning symbols.CAUTION:A laser caution symbol that appearswhere laser ligh

IndexI–1AAccessories, 2–6ACK/NAK Protocol, serial programming, 9–3Autosense Mode, 2–2disable, 5–7enable, 5–7installing autostand, C–1BBar Code Test Sy

IndexI–2FFactory Default Settings, 4–7GGeneral Setup Parameters, 2–3autosense mode, 5–7beeper operation, 5–4capture count, 5–5external trigger operati

IndexI–3PParameter Selection Guidelines, 4–5Parametersgeneral setup, 2–3, 5–1message format, 2–4, 7–1serial communication, 2–3, 6–1symbologies, 2–4, 8

IndexI–4Serial Programming, 2–3, 9–1ACK/NAK protocol, 9–3effect on manual scanning, 9–4examples, 9–2parameter changes, 9–4when using standby power, 9–

Catalog Number 2755-NU002 Series A 40062-245-01(A)Copyright 1992 Allen-Bradley Company, Inc. Printed in USA

A–B2Chapter2–1Overview of ScannerThis chapter gives an overview of the scannerincluding:• Function of Scanner• Operating Modes• Scanner Setup Paramete

Overview of ScannerChapter 22–2The scanner functions in one of two operating modes:Hand-Held mode or Autosense mode.Hand-Held Mode In hand-held mode,

Overview of ScannerChapter 22–3The built-in setup parameters of the scanner fall intofour general categories:• General Setup• Serial Communication• Me

Overview of ScannerChapter 22–4Message Format ParametersParameters that control the format of messagestransmitted to the host include:• Prefix• Suffix

Overview of ScannerChapter 22–5The following figure shows the catalog numberbreakdown for ordering a scanner.2755 - G 3 - D Bulletin NumberG = Gun3 =

Overview of ScannerChapter 22–6Table 2.A lists the RS-232 interface cables availablefor the scanners. Cables are available with differentpinouts to s

A–B3Chapter3–1Using the ScannerThis chapter covers some basic topics on theoperation and use of the scanner including:• Physical Description• LED Indi

Using the ScannerChapter 33–2Light, reflected off the bar code symbols, passes backthrough the window and is detected by light sensors.When a label is

Using the ScannerChapter 33–3The scanners use a low power visible laser diode. Aswith any bright light source, such as the sun, youshould avoid stari

Solid state equipment has operational characteristicsdiffering from those of electromechanical equipment.“Application Guidelines for Application, Inst

Using the ScannerChapter 33–4The scanners can read bar code labels at variousdistances depending on the bar code width (width ofnarrowest element in b

Using the ScannerChapter 33–5Figure 3.1Scanning Ranges Standard Range ScannerCatalog No. 2755-G3-D010 20 30505100.040 in0.055 in0.020 in0.015 in0.010

Using the ScannerChapter 33–6Follow these basic steps to operate scanner.1. Check Before using the scanner, checkall cable connections to makesure the

Using the ScannerChapter 33–7When scanning a bar code symbol, listen for oneshort, high tone. It means the bar code has beendecoded successfully. A

Using the ScannerChapter 33–8This section provides a list of things to check if youare having problems scanning.Note: Scanning problems are most ofte

A–B4Chapter4–1Setup InstructionsThis chapter provides setup instructions including:• Connecting Scanner to Host• Scanner Configuration Guidelines• Sca

Setup InstructionsChapter 44–2Installing Interface CableThe interface cable has a modular plug (resembling atelephone connector) on one end and a 25

Setup InstructionsChapter 44–3Removing Interface CableAt some point you may have to replace the interfacecable with another cable.To remove the interf

Setup InstructionsChapter 44–4Installing Power SupplyThe external power supply (Catalog No. 2755-PW1)provides power to the scanner. One end connects

Setup InstructionsChapter 44–5Configuration is the process of enabling or disablingscanner operating parameters. The host system andthe types of bar

A–BHand-Held Scanner with RS-232 OptionTable of ContentsiChapter 1Chapter Objectives 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . Contents o

Setup InstructionsChapter 44–6Note: When enabling or disabling a parameter, besure the scanner beam illuminates only one symbol ata time. The layout

Setup InstructionsChapter 44–7Table 4.A lists the factory default settings for eachgroup of scanner parameters.Table 4.AScanner Default SettingsGenera

Setup InstructionsChapter 44–8Table 4.A (continued)Scanner Default SettingsSerial Communication ParametersOptions DefaultBaud Rate 300, 600, 1200, 240

Setup InstructionsChapter 44–9Table 4.A (continued)Scanner Default SettingsSymbologiesCodeOptions DefaultUPC (A and E) Disable UPC (A and E)Enable wit

Setup InstructionsChapter 44–10To reset the scanner to the factory default settings,scan label ZA.ZAReset toFactory DefaultsNote: Scanning this label

A–B5Chapter5–1General Setup ParametersThis chapter describes parameters specific to theoperation of the scanner including: • System Status• Power Cons

General Setup ParametersChapter 55–2PowerData BitsChar DelayScanner IDPreambleCode ID CharSerial BuffrStandby800NoneNoneNoFullBeeperParityProtocolPref

General Setup ParametersChapter 55–3You can select one of two power consumption modesfor the scanner. Option @A supplies full power to thescanner at

General Setup ParametersChapter 55–4To disable or set the volume of the beeper, scan theappropriate option below.AABeeper OffABVolume LowBeeper On; AC

General Setup ParametersChapter 55–5Capture Count determines the number of successful,identical decodes that must occur for a valid read.You can use t

Hand-Held Scanner with RS-232 OptionTable of ContentsiiChapter 4Chapter Objectives 4–1. . . . . . . . . . . . . . . . . . . . . . . . . . Connecting S

General Setup ParametersChapter 55–6You can enable the scanner to use a spotter beamwhich helps when aiming the scanner. Each time thescanner is trig

General Setup ParametersChapter 55–7In Autosense mode, the scanner has an internal objectsensor allowing you to operate the scanner in anoptional Auto

General Setup ParametersChapter 55–8External trigger operation enables an external deviceto control scanning. External trigger is controlled byapplyi

A–B6Chapter6–1Serial Communication ParametersThis chapter covers parameters that control serialcommunications between the scanner and the hostdevice i

Serial Communication ParametersChapter 66–2The serial communication baud rate selections arelisted below. Your scanner and the serial hostcomputer mu

Serial Communication ParametersChapter 66–3Serial transmission data consists of three or fourdifferent elements depending on the host systemrequiremen

Serial Communication ParametersChapter 66–47 Data Bits, 1 Stop Bit, Parity CheckIf your system requires a word length of 7 Data bits, asingle Stop bit

Serial Communication ParametersChapter 66–57 Data Bits, 2 Stop Bits, Parity CheckIf your system requires a word length of 7 Data bits,2 Stop bits, and

Serial Communication ParametersChapter 66–68 Data Bits, 1 Stop Bit, Parity CheckIf your system requires a word length of 8 Data bits,1 Stop bit, and P

Serial Communication ParametersChapter 66–7Protocol controls data flow between your scanner andthe serial host computer. The protocol options are:Non

Hand-Held Scanner with RS-232 OptionTable of ContentsiiiChapter 7Chapter Objectives 7–1. . . . . . . . . . . . . . . . . . . . . . . . . . Message For

Serial Communication ParametersChapter 66–8 RTS ProtocolThe RTS output from the scanner may be pro-grammed to operate in one of three different modes.

Serial Communication ParametersChapter 66–9HGRTS always highHH RTS always lowHIRTS high indicatesto transmitscanner has dataHJRTS low indicatesscanner

Serial Communication ParametersChapter 66–10Certain terminals and computers require anintercharacter delay to simulate the effects ofkeystroke delays.

Serial Communication ParametersChapter 66–11The scanner supports three levels of serial buffering:Full Buffering, No Buffering, One Label Buffering.Fu

A–B7Chapter7–1Message Format ParametersThis chapter defines parameters that control theformat of transmitted bar code messages including:• Prefix and

Message Format ParametersChapter 77–2A prefix is a subset of the preamble normallyformatted to some industry standard. It is representedby a specific

Message Format ParametersChapter 77–3A suffix is a subset of the postamble. Like the prefix,it is normally assigned to a specific ASCII code.Examples

Message Format ParametersChapter 77–4Scanner ID characters are used to identify individualscanners when more than one scanner is interfacedwith the ho

Message Format ParametersChapter 77–5A single-character code identifier may optionally betransmitted with a message. This option allows thehost compu

Message Format ParametersChapter 77–6Preambles and postambles consist of up to fourASCII characters. Each ASCII character is encodedas two hexadecima

Hand-Held Scanner with RS-232 OptionTable of ContentsivCode 128 8–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Minimum Leng

Message Format ParametersChapter 77–7A preamble is a string of characters that prefixes amessage that is transmitted to the host. The preamblemay be

Message Format ParametersChapter 77–8Table 7.BHexadecimal Conversion Table0 1 2 30 NUL DLE SP 01 SOH DC1 ! 12 STX DC2 ” 23 ETX DC3 # 34 EOT DC4 $ 45 E

Message Format ParametersChapter 77–9Table 7.B (continued)Hexadecimal Conversion Table4 5 6 70 @ P ‘ p1 A Q a q2 B R b r3 C S c s4 D T d t5 E U e u6 F

Message Format ParametersChapter 77–10When the scanner is triggered, the scan beam isactive until:1. a label is decoded2. the trigger is released3. th

A–B8Chapter8–1SymbologiesThis chapter shows how to enable bar code symbol-ogies the scanner is capable of reading including:• Code 39• UPC-A and UPC-E

SymbologiesChapter 88–2To disable Code 39, scan label OA.OADisable Code 39To enable Code 39, scan option OB or OC. Afterenabling Code 39, make any ad

SymbologiesChapter 88–3Modulo 43 Check CharacterOptions OD and OE allow you to enable or disable theModulo 43 check character for Code 39. To enablet

SymbologiesChapter 88–4Minimum LengthThe minimum length of Code 39 is set by scanninglabel OH and then two digits (01 - 32) in Appendix B.OHMinimum Le

SymbologiesChapter 88–5To disable all UPC labels, scan label QA.QADisable UPC (A and E)SupplementsOption QB or option QC enable both UPC-A andUPC-E.

SymbologiesChapter 88–6Transmit Number System DigitYou can enable or disable the transmission of the firstcharacter in a UPC symbol (the number system

Hand-Held Scanner with RS-232 OptionTable of ContentsvFiguresScanning Ranges 3–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . System Connect

SymbologiesChapter 88–7UPC to EAN Translation You can cause UPC labels to be transmitted asEAN-13 labels. To enable UPC to EAN translation,scan label

SymbologiesChapter 88–8Scan label RA to disable EAN/JAN (8 or 13 digit).RADisable EAN/JAN *(8 or 13 digit)SupplementsOption RB or option RC enables bo

SymbologiesChapter 88–9Transmit Number System DigitYou can enable or disable the transmission of the firstcharacter in an EAN/JAN symbol (the number s

SymbologiesChapter 88–10Scan label PA to disable Interleaved 2 of 5.PADisable Interleaved 2 of 5 *Check DigitYou can enable Interleaved 2 of 5 with or

SymbologiesChapter 88–11Minimum LengthTo set a minimum length (other than two) forInterleaved 2 of 5, scan label PD and then two digits(02-32) in Appe

SymbologiesChapter 88–12Scan label PF to disable Standard Code 2 of 5.PFDisable *Standard 2 of 5To enable Standard Code 2 of 5, scan label PG.PGEnable

SymbologiesChapter 88–13Scan label TA to disable Code 128.TA Disable Code 128Scan option TB to enable Code 128.TB Enable Code 128 *Minimum LengthTo s

SymbologiesChapter 88–14Scan label VA to disable Codabar.VADisable Codabar *Scan option VB to enable Codabar.VBEnable Codabar Transmit Start/Stop Cha

SymbologiesChapter 88–15Minimum LengthTo set a minimum length for Codabar, scan label VEand then two digits (01-32) in Appendix B.VEMinimum Length +(S

A–B9Chapter9–1Serial CommandsThis chapter covers serial commands that can be sentfrom the host to configure the scanner including:• Serial Command For

A–B1Chapter1–1Using this ManualThis chapter gives an overview of the manualincluding:• Contents of Package• Intended Audience• Overview of Manual• War

Serial CommandsChapter 99–2Table 9.ASerial Programming Command ExamplesCommandFunctionSTX ESC PC ETX Enable Interleaved 2 of 5 with check digit.STX

Serial CommandsChapter 99–3The scanner provides ACK/NAK protocol duringserial programming to provide feedback to the hostcomputer which is programming

Serial CommandsChapter 99–4When the scanner is programmed for standby poweroperation (@B), the first character of the command isused to wake-up the sc

A–B10Chapter10–1SpecificationsOpticalNominal Scan Rate 35 scans/secondWavelength (nominal) 670 nmMaximum Pitch ±55 degreesMaximum Skew ±65 degreesScan

SpecificationsChapter 1010–2MechanicalDimensionsInches 4.0(L) x 2.8(W) x 6.6(H)Millimeters 102(L) x 71(W) x 168(H)Weight 8.0 oz (0.23 kg)LED Indicato

A–BAAppendixA–1Bar Code Test SymbolsUse the following labels to insure that your scanner is functioningproperly. The only label the long range scanne

A–BBAppendixB–1Digit Selection Symbols

A–BCAppendixC–1Autosense ModeTo set up the scanner to operate in Autosense modeusing the optional Autostand follow the steps belowwhile referring to F

Autosense ModeAppendix CC–2Figure C.1AutostandScannerScanner HolderReflective Stand Base#6-32 Thumb Screws#6-32 Thumb ScrewsStand RiserLabel1Important

A–BDAppendixD–1Interface Cable PinoutsThe Catalog No. 2755-NCR1 Cable is typically usedto connect the scanner to IBM PC Compatiblecomputers. You may

Using this ManualChapter 11–2This manual shows how to set up and use the scannerwith an RS-232 serial device for non-contact scan-ning applications. T

Interface Cable PinoutsAppendix DD–2The Catalog No. 2755-NCR2 cable is compatiblewith the AUX port on the Single and Dual-HeadEnhanced Bar Code Decode

A–BEAppendixE–1MaintenanceThis appendix provides general maintenanceinformation for your scanner.You may need to clean the window of the scanner.Caref

A–BFAppendixF–1Scanner CommandsEach label in this manual is preceded by twocharacters which represent the serial command for ascanner parameter. The

Scanner CommandsAppendix FF–2Serial Communication Parameters MnemonicFunction Page #DA Baud Rate = 300 6-2DB Baud Rate = 600 6-2DC Baud Rate = 1200 6-

Scanner CommandsAppendix FF–3Message Format Parameters MnemonicFunction Page #IA Prefix = None 7-2IB Prefix = STX 7-2IC Prefix = SOH 7-2MA Suffix=None

Scanner CommandsAppendix FF–4Symbology Parameters (continued) MnemonicFunction Page #QD Disable Transmission UPC Number System Digit 8-6QE Enable Tran

A–BGlossaryG–1ACK: See acknowledgement.acknowledgement (ACK): An ASCII control characterused to acknowledge the reception and acceptance of atransmi

GlossaryG–2check digit: A digit included within a symbol whosevalue is based mathematically on other charactersincluded in the symbol. It is used to

GlossaryG–3hex: Abbreviated form of the word hexadecimal. Seehexadecimal.hexadecimal: A base-16 numbering system that uses thesymbols 0, 1, 2, 3, 4,

GlossaryG–4self-checking: A bar code or symbol using a checkingalgorithm which can be applied to each character to guardagainst undetected errors. Co