Allen-Bradley 2755-LS7-SB User Manual
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Allen-Bradley 2755-LS7-SB User Manual

Allen-Bradley 2755-LS7-SB User Manual

Atomscan+ series
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Allen-Bradley
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AtomScan
Bar
Code Readers
(Cat. Nos. 2755-LS7-SA,
2755-LS7-SB,
2755-LS7-RA,
2755-LS7-RB,
2755-LS7-SBV, and
2755-LS7-RBV)
User
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Summary of Contents for Allen-Bradley 2755-LS7-SB

  • Page 1 Allen-Bradley User AtomScan Code Readers Manual (Cat. Nos. 2755-LS7-SA, 2755-LS7-SB, 2755-LS7-RA, 2755-LS7-RB, 2755-LS7-SBV, and 2755-LS7-RBV)
  • Page 2 PLC-5 and PHOTOSWITCH are registered trademarks of Allen-Bradley, Inc. SLC 5/03, SLC 5/04, MicroLogix, and DTAM are trademarks of Allen-Bradley Company, Inc. DeviceNet is a trademark of the Open DeviceNet Vendor Association Windows is a trademark of Microsoft...

  • Page 3: Table Of Contents

    3–6 Catalog Numbers 2755-LS7-SA and 2755-LS7-RA ... 3–7 Catalog Numbers 2755-LS7-SB and 2755-LS7-RB ... 3–7 Catalog Numbers 2755-LS7-SBV and 2755-LS7-RBV .
  • Page 4 toc–ii Table of Contents Installing Your Hardware Chapter 4 Installing the System Hardware ......4–2 Connecting System Hardware Together When Using an Interface Box...
  • Page 5 Table of Contents toc–iii Defaulting the Reader ....... 6–14 Operating the Interface Box .
  • Page 6 toc–iv Table of Contents Flexible Interface Module Setup ......E–5 SLC 5/03 and SLC 5/04 Controllers ......E–7 Hardware Connections for the SLC 5/03 and SLC 5/04 Controllers...

  • Page 7: Chapter Objectives

    Preface Chapter Objectives Read this chapter to familiarize yourself with the rest of the manual. You will learn about: • contents of this manual • conventions used in this manual • intended audience • related publications • technical support services Contents of this Manual The following table describes the contents of this manual.

  • Page 8: Conventions Used In This Manual

    If you can’t find the answer, contact Rockwell Automation International Support: Rockwell International Technical Support 6680 Beta Drive Mayfield Village, Ohio 36849 Inside USA and Canada, call 1–800–289–2279. Outside USA and Canada, contact your Allen-Bradley office or call USA (216) 646–6800. Publication 2755-6.9...

  • Page 9: Introduction To Atomscan

    Chapter Introduction to AtomScan Code Readers This chapter can help you to get started using the AtomScan Code Readers. We base the procedures here on the assumption that you have an understanding of bar code scanners and control equipment. Because it is an introduction, this chapter does not contain detailed explanations about the procedures listed.

  • Page 10: Procedures

    Power Supply for the AtomScan Bar Code Readers Installation Instructions [Catalog No. 40062-368-01 (A)] If the contents are incomplete, call your local Allen-Bradley representative for assistance. Design the scanner system. Reference Each application must be evaluated carefully. Successful bar code scanning begins with quality bar...
  • Page 11 Introduction to AtomScan Bar Code Readers 1–3 Install the reader. Reference Mount the reader (Catalog Nos. 2755-LS7-SA, 2755-LS7-SB, 2755-LS7-RA, 2755-LS7-RB, Chapter 4 (Installing Your 2755-LS7-SBV, or 2755-LS7-RBV) to the mounting plate (Catalog No. 2755-LS7-N) or directly to your Hardware) mounting surface. [The maximum distance from the reader to another device is 3 ft. (0.91 m)]. Use # 6 screws with maximum penetration of 0.15 in.
  • Page 12 1–4 Introduction to AtomScan Bar Code Readers Install the interface box. Reference Mount the interface box to your mounting surface. Use # 6 screws with maximum penetration of Chapter 4 (Installing Your 0.25 in. (6.35 mm). Hardware) Interface Box Mounting Surface Install the power supply.
  • Page 13 Introduction to AtomScan Bar Code Readers 1–5 Apply power to the scanner system. Reference After all of your hardware components are installed, apply power to your scanner system. Push the Chapter 4 (Installing Your power button in on the interface box. Hardware) Front View of the Interface Box Power Switch...
  • Page 14 1–6 Introduction to AtomScan Bar Code Readers Change the appropriate configuration settings. Reference Press [<D>] to access the Main menu. The Main menu appears: Chapter 5 (Configuring Your Reader) From the Main menu you are able to access the configuration settings and change the settings needed for your application.
  • Page 15 Introduction to AtomScan Bar Code Readers 1–7 Unplug the configuration terminal from the interface box. Reference Unplug the configuration terminal from the RS-232 or RS-485/422 port on the interface box. Chapter 4 (Installing Your Hardware) Rear View of the Interface Box RS-232 Port RS-485/422 Port Plug in the host device to the interface box.

  • Page 16: Hardware Features

    Chapter Hardware Features This chapter describes the features of the AtomScan Bar Code Readers (Catalog Nos. 2755-LS7-SA, 2755-LS7-SB, 2755-LS7-RA, 2755-LS7-RB, 2755-LS7-SBV, and 2755-LS7-RBV) and interface boxes (Catalog Nos. 2755-LS7-IB1 and 2755-LS7-IB2). Included are descriptions of: • reader features • reader LEDs •...

  • Page 17: Interface Box Features

    PHOTOSWITCH photoelectric sensor (Catalog Nos. 42GRP-9000, 42GRU-9000, 42GRU-9200, 42GRC-9000, or 42GRR-9000). Contact your local Allen-Bradley sales office or distributor for more information regarding PHOTOSWITCH photoelectric sensors. • Scanner port. Connects the interface box to the reader cable.

  • Page 18: Decoding

    Hardware Features 2–3 Decoding The readers can decode the following symbologies: • UPC-A • UPC-E • EAN 8 • EAN 13 • Code 39 • Code 128 • EAN 128 • Codabar • Interleaved 2 of 5 Refer to chapter 5 for more information on the code types listed above.

  • Page 19: Safety Information

    2–4 Hardware Features Safety Information This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.

  • Page 20: Scan Beam Options

    The raster type reader is useful for reading dot matrix print bar code symbols. Accessories The following accessories are available. Contact your local Allen-Bradley sales office or distributor for more information regarding product availability and pricing. Description Catalog Number Straight ahead high density read, single line bar code reader...

  • Page 21: Setup Goals

    Chapter Designing Your Scanner System This chapter provides the information needed to set up a scanner system correctly. Items include: • setup goals • symbol height and length • symbol quality • symbol orientation • tilt, pitch, and skew • determining read range •...

  • Page 22: Symbol Height And Length

    3–2 Designing Your Scanner System Symbol Height and Length The height is measured from one end of a bar to the other, and its length is always the distance from one end of the symbol to the other, including the Quiet Zones. A Quiet Zone is the empty space before or after the bars, and is usually equal to 10 times the Narrow Element Width.

  • Page 23: Symbol Orientation

    Designing Your Scanner System 3–3 Symbol Orientation Bar code symbols must be in the correct position as they move by the reader. The scan line must cross every bar, space, and both quiet zones on the same sweep. Correct: All bars are crossed by scan line Not Correct:...
  • Page 24 3–4 Designing Your Scanner System Picket Fence In picket fence orientation, the symbol can be read the whole time it is in the read range, rather than being limited by the height of the bar code. However, picket fence allows scanning of only a small part of the whole symbol.

  • Page 25: Tilt, Pitch, And Skew

    Designing Your Scanner System 3–5 When to Use a Raster Reader Single line readers should always used in step ladder orientation. Raster readers are beneficial in picket fence applications with symbols printed by a dot matrix printer, where the bars have ragged edges or voids, or where the spaces have specks in them.

  • Page 26: Skew

    2.1 in. (5.33 cm) 2755-LS7-RA 7.5 mils (0.19 mm) 2.0 to 4.0 in. (5.08 to 10.2 cm) 3.6 in. (9.14 cm) 2755-LS7-SB, 7.5 mils (0.19 mm) 2.5 to 5.5 in. (6.35 to 14.0 cm) 4.0 in. (10.2 cm) 2755-LS7-RB 10 mils (0.25 mm) 2.0 to 6.5 in.

  • Page 27: Catalog Numbers 2755-Ls7-Sa And 2755-Ls7-Ra

    (0.19 mm) inches centimeters 2.54 5.08 7.62 10.2 Distance From Front of Reader Catalog Numbers 2755-LS7-SB and 2755-LS7-RB 8 in. (20.32 cm) 4 in. (10.2 cm) Reader 4 in. (10.2 cm) 8 in. (20.32 cm) 7.5 mils (0.19 mm) 10 mils (0.25 mm)

  • Page 28: Catalog Numbers 2755-Ls7-Sbv And 2755-Ls7-Rbv

    3–8 Designing Your Scanner System Catalog Numbers 2755-LS7-SBV and 2755-LS7-RBV 8 in. (20.32 cm) 4 in. (10.2 cm) Reader 4 in. (10.2 cm) 8 in. (20.32 cm) 7.5 mils (0.19 mm) 10 mils (0.25 mm) 15 mils (0.38 mm) 20 mils (0.51 mm) 30 mils (0.76 mm)

  • Page 29: Calculating The Number Of Scans

    Designing Your Scanner System 3–9 Calculating the Number of To ensure a successful read of a bar code symbol, the bar code Scans symbol should be scanned 5 times. With fewer scans there will be more No Read counts, even when the symbol is good. If the symbol quality is poor, more scans per symbol may also be required.

  • Page 30: Picket Fence Calculation

    3–10 Designing Your Scanner System Picket Fence Calculation To calculate scans per symbol for picket fence applications, use the following formula. R (W–L) – 3 S = Scans per Label Scan Rate W = Scan Width at the Minimum Read Distance L = Symbol Length (including quiet zones) C = Conveyor Speed The –3 accounts for the incomplete scans at the beginning and end and one for the Automatic...

  • Page 31: Installing Your Hardware

    Chapter Installing Your Hardware This chapter provides the information needed to install the readers and interface boxes. Items include: • installing the system hardware • connecting system hardware together when using an interface box • connecting system hardware together when using an auxiliary monitor •...

  • Page 32: Installing The System Hardware

    1. Make sure your scanner system is planned out properly. Refer to chapter 3 for information regarding planning your scanner system. 2. Mount the reader (Catalog Nos. 2755-LS7-SA, 2755-LS7-SB, 2755-LS7-RA, 2755-LS7-RB, 2755-LS7-SBV, or 2755-LS7-RBV) to the mounting plate (Catalog No.
  • Page 33 Installing Your Hardware 4–3 The dimensions of the readers are shown below. Note: The drawing below is not to scale. Bottom View 2.59 in. (6.58 cm) 1.36 in. (3.49 cm) 2.5 in. (6.35 cm) 3.47 in. (8.81 cm) Side View (Catalog Nos. 2755-LS7-SA, -SB, -RA, and -RB) 2.25 in.
  • Page 34 4–4 Installing Your Hardware 3. Mount the plate to your mounting surface. You can mount the plate to the top, bottom, or side of your mounting surface. Use # 6 screws. Make sure placement of the mounting plate will allow you to connect the reader to the interface box (Catalog Nos.

  • Page 35: Connecting System Hardware Together When Using An Interface Box

    Installing Your Hardware 4–5 Connecting System Follow the steps starting below to connect your system hardware Hardware Together When together when using an interface box. Refer to appendix B for cable Using an Interface Box pinouts. 1. Plug the reader into the interface box. Interface Box To Scanner Port Reader...
  • Page 36 4–6 Installing Your Hardware To wire the Switchcraft connector, refer to the following table. Contact your local Allen-Bradley sales office or distributor for more information regarding PHOTOSWITCH photoelectric sensors. Switchcraft Connector Pin Function of Connection PHOTOSWITCH Wire Color Trigger from switch...
  • Page 37 Installing Your Hardware 4–7 4. Plug the power supply into the interface box. Interface Box To Power Port Power Supply 5. Connect the power supply cable to the power supply and to the power receptacle supplying 100-240V ac. To Power Receptacle To Power Supply Grounding Pin 6.

  • Page 38: Connecting System Hardware Together When Using An Interface Box With An Auxiliary Monitor

    4–8 Installing Your Hardware Connecting System Follow the steps starting below to connect your system hardware Hardware Together When together when using an auxiliary monitor. You can only use Series B Using an Interface Box or higher of the reader when using an auxiliary monitor. Refer to with an Auxiliary Monitor appendix B and page 6–11 for cable pinouts.
  • Page 39 Installing Your Hardware 4–9 To wire the Switchcraft connector, refer to the following table. Contact your local Allen-Bradley sales office or distributor for more information regarding PHOTOSWITCH photoelectric sensors. Switchcraft Connector Pin Function of Connection PHOTOSWITCH Wire Color Trigger from switch...
  • Page 40 4–10 Installing Your Hardware 5. Plug the power supply into the interface box. Interface Box To Power Port Power Supply 6. Connect the power supply cable to the power supply and to the power receptacle supplying 100-240V ac. To Power Receptacle To Power Supply Grounding Pin 7.

  • Page 41: Connecting System Hardware Together When Using An Interface Box In A Daisy-Chain Configuration

    Installing Your Hardware 4–11 Connecting System Follow the steps starting below to connect your system hardware Hardware Together When together when using an interface box. You can only use Series B or Using an Interface Box in a higher of the reader when using the daisy-chain configuration except Daisy-Chain Configuration for the last reader used in the chain.
  • Page 42 4–12 Installing Your Hardware To wire the Switchcraft connector, refer to the following table. Contact your local Allen-Bradley sales office or distributor for more information regarding PHOTOSWITCH photoelectric sensors. Switchcraft Connector Pin Function of Connection PHOTOSWITCH Wire Color Trigger from switch...
  • Page 43 Installing Your Hardware 4–13 5. Plug a power supply into each interface box. Interface Box To Power Port Power Supply 6. Connect a power supply cable to each power supply and to the power receptacle supplying 100-240V ac. To Power Receptacle To Power Supply Grounding Pin 7.
  • Page 44 4–14 Installing Your Hardware 6. Disconnect the slave interface box from the master interface box. 7. Connect the configuration terminal to the slave interface box. 8. Turn on the slave interface box. 9. Configure the slave reader. Refer to chapter 5 for the reader configuration sequence information.

  • Page 45: Connecting System Hardware Together When Not Using An Interface Box

    Installing Your Hardware 4–15 Connecting System Follow the steps below to connect your system hardware together Hardware Together When when not using an interface box. Not Using an Interface Box 1. Determine which pins on the reader cable connector are needed. Refer to appendix B for a listing of the connector pins of the reader cable.

  • Page 46: Configuring Your Reader

    Chapter Configuring Your Reader This chapter describes the configuration options for the readers. Items include: • menu configuration • serial configuration • decode test • adjusting reader parameters Menu Configuration You can change the reader’s configuration through the use of menus. Follow the steps starting below to change the reader’s configuration.
  • Page 47 5–2 Configuring Your Reader 4. Press to access the Main menu. The Main menu appears: [<D>] The bottom line on the screen is called the command line. The command line identifies your place in the menu program, shows current status, and allows you to review and change options. Use the designated keys to scroll to and select the parameter you wish to change.
  • Page 48 Configuring Your Reader 5–3 2. Press to return to the Main menu, or press to exit the Menu Configuration program. If is pressed, the following screen will appear. 3. Press to exit without saving changes, or press to retain the current settings for power-on. If is selected, a second beep will indicate the save has been carried out.
  • Page 49 5–4 Configuring Your Reader Defining Special Characters To define any control character from the ASCII table, press 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 the space bar and then simultaneously.

  • Page 50: Communications Menu

    Configuring Your Reader 5–5 Communications Menu The Communications menu allows you to set the communication protocols between the reader and the host device. Note: Changes in communications parameters or assigning an address to the reader can cause loss of communications with the configuration terminal when you exit the menu program (whether or not changes are saved for power-on).
  • Page 51 5–6 Configuring Your Reader Host Protocol Parameters • Protocol. Protocols define the sequence and format in which information is transferred between devices. The protocol options are listed in the following table. Parameter Description Has no address and sends data to the host (RS-232) whenever it is available and Point-to-Point without any request or handshake from the host.
  • Page 52 Configuring Your Reader 5–7 ote: 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. Typically, parameters in User Defined Multidrop are defined by first enabling Multidrop, then enabling User Defined Multidrop.
  • Page 53 5–8 Configuring Your Reader Auxiliary Port Parameters Auxiliary Port Parameters allow you to set communications parameters between daisy-chained readers or between the reader and an auxiliary monitor. An auxiliary monitor can be used to configure the menus, send data to the host, and display data transmissions originating from the host or reader.

  • Page 54: Operations Menu

    Configuring Your Reader 5–9 Operations Menu The Operations menu, shown below, allows you to set the operations parameters for the reader. Default settings are in bold type face. Operations Timeout in 10 ms Triggering Mode End of Serial Trigger External incs Character Trigger...
  • Page 55 5–10 Configuring Your Reader • Triggering Mode. Allows you to establish the type of trigger event that will initiate or end the read cycle. The trigger event options are listed in the following table. Parameter Description Trigger input options are disabled and the reader is always in the read cycle. Bar code data is decoded, and label information is transmitted repeatedly, as long as the label is in the read range of the reader.
  • Page 56 Configuring Your Reader 5–11 • End of Read Cycle. Allows you to choose the circumstances that will end the read cycle. The read cycle is the time during which the reader will receive and process label data. When the Triggering Mode option is set in an External or Serial mode of operation, the trigger event initiates the read cycle.
  • Page 57 5–12 Configuring Your Reader • External Trigger Level. Allows you to determine whether a positive or negative transition will initiate the read cycle. Note: External Level, External Edge, or Serial Data & Edge must be enabled for External Trigger Level to take effect. “N/A” is displayed in the menu when all other triggering modes are enabled.
  • Page 58 Configuring Your Reader 5–13 Enable Match Code Type: By menu selection, by operational command <E>, or, by serial configuration command <Kn1>. Enable New Master Pin: Toggle reader pin 12 to GND (pin 4) to enter next label scanned as the master By menu selection, or label.
  • Page 59 5–14 Configuring Your Reader • Match Code Master. Allows you to edit an existing master or type in a new master label from your keyboard. You can display current master and accept entry up to 64 characters. • Sequential Matching. Defines the order (ascending or descending) in which labels will be compared when Match Code Type is set to Sequential.

  • Page 60: Code Types Menu

    Configuring Your Reader 5–15 Code Types Menu The Code Types menu, shown below, allows you to choose among five bar code types and define their parameters. Default settings are in bold type face. Options can be defined for any bar code type whether or not the bar code itself is enabled at the time.
  • Page 61 5–16 Configuring Your Reader Narrow Margins Allows the reader to read bar codes with quiet zones less than 10 times the narrow-bar-width. Quiet zone is a term used to describe the minimum space at the leading and trailing ends of a label. Each quiet zone can be as small as five times the narrow bar element when Narrow Margins is enabled.
  • Page 62 Configuring Your Reader 5–17 Code 39 • Status • Check Digit. Code 39 is self-checking and does not normally require a check digit. However, for additional data integrity, a Modulus 43 check digit can be added to the bar code message. With Check Digit and an External or Serial Trigger option enabled, an invalid check digit calculation will cause a no read message to be transmitted at the end of the read cycle.
  • Page 63 5–18 Configuring Your Reader • Check Digit Output. When enabled, the check digit character is sent along with the label data. When disabled, label data is sent without the check digit. I 2 of 5 • Status. Because I 2 of 5 is a continuous code, it is prone to substitution errors.
  • Page 64 Configuring Your Reader 5–19 • Separator (Character). Allows you to change the separator character from a comma to a new value. Code 128 • Status • Fixed Code Length. Allows you to increase data integrity by ensuring that only one label length will be accepted. •...

  • Page 65: Scanner Output Menu

    5–20 Configuring Your Reader Scanner Output Menu The Scanner Output menu, shown below, allows you to configure the reader’s output. Default settings are in bold type face. Bar code output data and no read messages are transmitted on pin 2 under conditions set principally in Bar Code Output.
  • Page 66 Configuring Your Reader 5–21 Relay–1 and Relay–2 • Output On. Allows you to set the conditions that will output a relay pulse either to pin 7 (Relay-1) or to pin 14 (Relay-2). Parameter Description Sends a pulse when the label’s data does not match that of the master label or the Mismatch or No Read label is not decoded before the end of the read cycle.
  • Page 67 5–22 Configuring Your Reader • No Read Message. Allows you to define any combination of ASCII characters (except NUL) up to seven characters as the no read message. When enabled, the no read message will be transmitted to the host at a timeout or the end of a read cycle if the bar code label has not been decoded.

  • Page 68: Scanner Setup Menu

    Configuring Your Reader 5–23 Scanner Setup Menu The Scanner Setup menu, shown below, allows you to set specific bar code scanning parameters that affect decode rate. Default settings are in bold type face. Note: Unlike most configuration settings, Scanner Type, Scans per Second, and Gain Adjustment are not saved for power-on (but are initialized) when you press .

  • Page 69: Serial Configuration

    5–24 Configuring Your Reader Serial Configuration Most of the configuration changes to the reader that can be made in the menu can also be accomplished by command strings from the host. Serial command strings are entered from an ASCII device. As with menu configuration commands, serial configuration commands relate to the initial reader setup.

  • Page 70: Concatenating Serial Commands

    Configuring Your Reader 5–25 To ensure that a command was received and accepted, you can enter the Show Scanner Status command, <?>. Concatenating Serial Commands Commands can be concatenated (added together) to a maximum of 64 characters in a single string or data block. Additional data blocks of 64 or less characters can be sent provided there is at least a 10 ms pause between blocks.

  • Page 71: Serial Configuration Commands

    5–26 Configuring Your Reader Serial Configuration Commands The table starting below lists the serial configuration commands. Function Command Parameter Format Communications <Kfprotocol,address> Protocol Preamble <Kdstatus,ASCII characters> Postamble <Kestatus,ASCII characters> <Kcstatus> Response Timeout <KAtimeout setting> Communications Intercharacter Delay <KBnumber> Host Port <Kabaud,parity,stop bits,data bits>...
  • Page 72 Configuring Your Reader 5–27 Function Command Parameter Format Relay 1 <Kvoutput on,polarity,pulse width> Relay 2 <Kwoutput on,polarity,pulse width> Bar Code Output <Klstatus,when to output> No Read Message <Kkstatus,output> Beeper <Kustatus,volume> Laser On/Off <KCstatus> Scanner Output <K serial command status,serial Serial Verification command beep status,control/hex output>...
  • Page 73 5–28 Configuring Your Reader Communications Commands • Protocol. If selecting one of the options from 0 to 4 (Point-to-Point, Point-to-Point with RTS/CTS, Point-to-Point with XON/XOFF, Point-to-Point with RTS/CTS and XON/XOFF, or Polling Mode D), use the format below. Command Parameter Format Example Protocol...
  • Page 74 Configuring Your Reader 5–29 • Postamble. You can enter one or two postamble characters except a null (00H). Command Parameter Format Example Status <Kestatus,postamble To disable Postamble, press 0 = Disabled character(s)> [<Ke0>] [<Ke0>]. 1 = Enabled • Command Parameter Format Example Status...
  • Page 75 5–30 Configuring Your Reader • Host Port. Changes made in the reader’s communications parameters such as baud rate, parity, stop bits, LRC, etc., must be matched in the other device(s) or communications will be lost. If this occurs, default the reader with the <Zd> Restore/Save Default Configuration for Power-on command.

  • Page 76: Auxiliary Port

    Configuring Your Reader 5–31 • Auxiliary Port Command Parameter Format Example Mode 0 = Disabled 1 = Transparent 2 = Half-duplex 3 = Full-duplex 4 = Slave Mode Baud Rate 0 = 600 1 = 1200 2 = 2400 3 = 4800 4 = 9600 <Ky mode,baud 5 = 19200...

  • Page 77: External Trigger Level

    5–32 Configuring Your Reader • End of Read Cycle. The timeout occurs in 10 millisecond increments. You can use any number between zero and 65535. The default is 100 (one second). Command Parameter Format Example End of Read Cycle Mode To select Timeout and change the 0 = Timeout <Khend of read cycle...
  • Page 78 Configuring Your Reader 5–33 For a sequence on a No Read, refer to the following table. When disabled, the reader does not sequence (increment or decrement) on a No Read. When enabled, the reader sequences on every No Read. Command Example Status 0 = Disabled...
  • Page 79 5–34 Configuring Your Reader • Code 39. You can use any number between 1 and 64 for the Fixed Code Length. The default is 10. Command Parameter Format Example Status 0 = Disabled 1 = Enabled Check Digit Status 0 = Disabled 1 = Enabled <Kpstatus,check digit Check Digit Output Status...
  • Page 80 Configuring Your Reader 5–35 • I 2 of 5. Code length #1 can be zero or any even number from 2 to 64. The default is 10. Code length #2 can be zero or any even number from 2 to 64. The default is 6. Command Parameter Format...
  • Page 81 5–36 Configuring Your Reader Scanner Output Commands • Relay–1. The pulse width occurs in 10 millisecond increments. You can use any number between 2 and 255. The default is 5. Command Parameter Format Example Output On 0 = Mismatch or No Read 1 = Match or Good Read To set Relay 1 to Mismatch and change 2 = Mismatch...

  • Page 82: Serial Verification

    Configuring Your Reader 5–37 • Beeper Command Parameter Format Example Beeper Status 0 = On Good 1 = On No Read Beeper Volume To set the beeper for On No Read and 0 = Off <Kustatus,volume> set the beeper volume to Off, press 1 = Level 1 [<Ku1 0>] [<Ku1,0>].
  • Page 83 5–38 Configuring Your Reader Scanner Setup Commands • Scanner Type. You determine the type of reader you are using. Entering the <Zp> command will save the current setting for Scanner Type to NOVRAM. Command Parameter Format Example Scanner Type 0 = Standard <KPdensity>...

  • Page 84: Decode Test

    Configuring Your Reader 5–39 • Scanner Setup Status Report. Allows you to return the status of each command in the group. Parameter Format <KU?> Decode Test To test the decode rate: 1. Position the label in front of a functioning reader. 2.

  • Page 85: Range

    5–40 Configuring Your Reader 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.

  • Page 86: Hardware Operation

    Chapter Hardware Operation This chapter provides information on how to operate your scanner system hardware. Items include: • using operational commands • operating scanner system hardware Using Operational On-line serial operational commands are sent from the host to the Commands reader to carry out routine operations “on the fly”...
  • Page 87 6–2 Hardware Operation Function Command Action <A> Software Reset (does not save for power-on) <Ad> Software Reset/Restore Default <An> Software Reset/Read NOVRAM <D> Enter Configuration Mode Program Management Program Management <Z> Software Reset/Save Parameters for Power-on <Zd> Restore/Save Default Configuration for Power-on <Zp>...

  • Page 88: Program Management Commands

    Hardware Operation 6–3 Program Management Commands • Software Reset, . Initializes all serial configuration [<A>] commands in RAM and resets all counters and operating parameters. Note: Software Reset will cause the numeric counters in use to lose their count; record all data that you wish to save prior to sending this command.

  • Page 89: Device Control Commands

    6–4 Hardware Operation Device Control Commands • Enable Laser Scanning (Laser On), [<H>] • Disable Laser Scanning (Laser Off), . This feature is useful [<I>] during extended periods of time when no bar code labels are being scanned. Disabling laser scanning will not affect any downloaded commands to the reader.

  • Page 90: Test Commands

    Hardware Operation 6–5 Note: If you activate the counter command during a read cycle, the reader will not output the count until the read cycle ends. • No Read Counter, . The message N/XXXXX displays the [<N>] total number of no reads that have occurred since power-on or the last No Read Counter Reset command.

  • Page 91: Status Commands

    6–6 Hardware Operation Status Commands • Display Software Part Number, . Displays software part [<#>] number. • Display Checksum of EPROM, . Displays a four-digit hex [<!>] number (corresponding to a given firmware version) used to verify a reader’s EPROM. •...
  • Page 92 Hardware Operation 6–7 C. Compare the bit digits (1 or 0) to each bit location to determine the reader function. For the binary number 01001101 (with the first zero being in bit location 7), the reader’s status is even parity (bit = 0), (skip bit location 6; it will always equal 1), the reader is not in a read cycle (bit = 0), the motor is spinning and the reader is ready to read (bit = 0), no NOVRAM error detected (bit = 0), a...

  • Page 93: Master Label Commands

    6–8 Hardware Operation • Show Software Status, . Sends the following in this order: [<?1>] status byte, part number, ROM checksum for both possible lengths of ROM (1 megabyte and 512 bytes), NOVRAM checksum at power up, then the current NOVRAM checksum. Note: Continuous Read, 1 Output or Match Code will change the current NOVRAM checksum.

  • Page 94: Operating Scanner System Hardware

    Hardware Operation 6–9 Operating Scanner System The following sections describe how to operate your scanner system Hardware hardware. Operating the Reader The reader turns on as soon as power is applied to it. The reader reads bar codes after the settings are configured through the menu commands or through the serial commands.
  • Page 95 6–10 Hardware Operation The reader will check the auxiliary port parameter for data when the reader is about to send a no read message after exiting a read cycle. The reader will wait up to 20 ms for the first character from the next reader down the line.
  • Page 96 Hardware Operation 6–11 You can only use Series B or higher of the reader when using an auxiliary monitor. Refer to the drawing below for auxiliary port connections. Host Reader Interface Box TXD 2 RXD 3 RS-232 AUX TXD 4 Port AUX RXD 5 Scanner...
  • Page 97 6–12 Hardware Operation Transparent mode is used to batch data from the auxiliary monitor to the host. The decoder buffers data from the auxiliary monitor and displays the keyed data on the auxiliary monitor. The decoder transmits auxiliary monitor data to the host when a label is scanned or a carriage return is entered from the auxiliary monitor.
  • Page 98 Hardware Operation 6–13 Full-duplex allows the auxiliary monitor data and bar code data to be sent directly to the host. The bar code data is not displayed on the auxiliary monitor screen. When Then •monitor data is passed directly through the host whenever it is received by the reader, unless the reader is in a polled mode, in which case the data will be ignored.

  • Page 99: Defaulting The Reader

    6–14 Hardware Operation Defaulting the Reader Defaulting the reader resets all reader configuration parameters except Gain Adjustment to their original default values. The value for Gain Adjustment is saved to NOVRAM for power-on by pressing (Save SPS/Gain for Power-on). [<Zp>] Note: The reader can also be defaulted using various methods with the interface box, if used.

  • Page 100: Defaulting The Interface Boxes

    Hardware Operation 6–15 When the Mode switch is in the in position, the interface box takes RS-232 signals (TXD, pin 2, RXD, pin 3) and converts them to RS-485 levels. The RS-485 levels are present at both the RS-485/422 (LAN) connector and the 25-pin (host) connector. Host RS-485 Reader...

  • Page 101: Operating The Power Supply

    6–16 Hardware Operation Shorting Pins 7 and 11 You may also default the reader by shorting pins 7 and 11 of the 25-pin (host) connector together on the interface box. To short the interface box: ATTENTION: Be certain that the correct pins are shorted.

  • Page 102: Maintenance And Troubleshooting

    Chapter Maintenance and Troubleshooting This chapter provides information on how to maintain and troubleshoot your readers. Items include: • cleaning the scan window • troubleshooting the readers • contacting GTS Cleaning the Scan Window Carefully clean the window by first removing loose particles of dirt with canned ultra filtered air.

  • Page 103: Troubleshooting The Readers

    7–2 Maintenance and Troubleshooting Troubleshooting the The following table provides a list of the most common operating Readers problems, probable causes, and corrective actions. Problem Probable Cause (s) Corrective Action 1. Host cable defective or 1. Check cable connections and wiring. not wired properly.

  • Page 104: Technical Support Services

    If you can’t find the answer, contact Rockwell Automation International Support: Rockwell International Technical Support 6680 Beta Drive Mayfield Village, Ohio 36849 Inside USA and Canada, call 1–800–289–2279. Outside USA and Canada, contact your Allen-Bradley office or call USA (216) 646–6800. Publication 2755-6.9...

  • Page 105: Specifications

    Appendix Specifications This appendix provides the specifications for the: • readers (Catalog Nos. 2755-LS7-SA, 2755-LS7-SB, 2755-LS7-RA, 2755-LS7-RB, 2755-LS7-SBV, and 2755-LS7-RBV) • interface boxes (Catalog Nos. 2755-LS7-IB1 and 2755-LS7-IB2) • power supply (Catalog No. 2755-LS7-PW1) Publication 2755-6.9...

  • Page 106: Reader Specifications

    Specifications Reader Specifications Specification Description Catalog No. Catalog No. Catalog No. Catalog No. Catalog No. Catalog No. 2755-LS7-SA 2755-LS7-RA 2755-LS7-SB 2755-LS7-RB 2755-LS7-SBV 2755-LS7-RBV Read Range Direction Straight ahead Straight ahead Straight ahead Straight ahead Right angle Right angle Single scan...

  • Page 107: Interface Box Specifications

    Specifications A–3 Interface Box Specifications Description Specification Catalog Numbers 2755-LS7-IB1 and 2755-LS7-IB2 Supply Voltage 5V dc @ 20 mA Operating Temperature 32_ F to 122_ F (0_ C to 50_ C) Humidity 90% @104_ F (40_ C) Agency Certification CE marked for all applicable directives. Power Supply Specifications Description...

  • Page 108: Appendix B

    Appendix Cable Pinouts This appendix provides the cable pinouts for the readers and interface boxes. Reader Cable Pinouts The reader cable pinouts are listed below. Signal Function Power Reader receives power from the power supply. Cable pin transmits data to host device. Cable pin receives data from host device.

  • Page 109: Interface Box Pinouts

    B–2 Cable Pinouts Interface Box Pinouts The interface box pinouts are listed in the tables starting below. Trigger Connector Function Trigger input. The reader receives a signal from a host device. Normally open relay contact. (Driven by relay #1 from reader.) +5 V +12 V Ground...

  • Page 110: Scanner Port

    Cable Pinouts B–3 Scanner Port Signal Function Power Provides power to the reader. Cable pin transmits data to host device. Cable pin receives data from host device. Ground Not Used Pin not used. Host is requesting data from the reader. Output TTL relay output When voltage is applied to the pin, the reader is set to...

  • Page 111: Rs-232 Port

    B–4 Cable Pinouts RS-232 Port Signal Function Chassis ground Reader transmits data to host device. Reader receives data from the host device. RTS, TXD, or Host RS-232 RTS or under software control aux RS-232 RS-485 Enable TXD, or RS-485 transmitter enable. Host RS-232 CTS or under software control aux RS-232 CTS or RXD RXD.

  • Page 112: Ascii Table

    Appendix ASCII Table This appendix provides ASCII characters. ASCII Characters Dec. Hex. Mne. Char. Dec. Hex. Char. Dec. Hex. Char. Dec. Hex. Char. ‘ “ & – < > Publication 2755-6.9...

  • Page 113: Appendix D

    Appendix Multidrop Communications This appendix describes the rules for setting up a concentrator or controller to communicate with a reader in standard Multidrop protocol. Multidrop Addresses Multidrop networks allow you to connect up to 50 readers to a single host via a concentrator or controller. Be aware of the following when setting up for multidrop communication.
  • Page 114 D–2 Multidrop Communications The poll and select addresses are listed in the table below. Reader Poll Address Select Address Reader Poll Address Select Address Publication 2755-6.9...

  • Page 115: Polling Sequence

    Multidrop Communications D–3 Polling Sequence The polling sequence occurs when the host device solicits information from the readers. The host device sends out poll requests to the readers. The polling sequence example below begins with a RES (reset) from the controller followed by poll address 1E (ASCII hex value for reader 02) and a REQ (request).

  • Page 116: Select Sequence

    D–4 Multidrop Communications Select Sequence Unlike poll requests, select commands always originate from the host device and consist of serial configuration or operation commands to devices that are configured in Multidrop. The reader complies with the command when it is polled during the cycle. A RES (reset) is the first command in the select sequence.

  • Page 117: Application Examples

    This application example describes how to configure and operate the readers when using an RS-232 cable connected to the AUX port of an Allen-Bradley Enhanced Decoder (Catalog No. 2755-DD/DS). This application example also provides configuration information for an Auxiliary Port Pass-Through application for the enhanced decoder.

  • Page 118: Hardware Connections For Aux Port Pass-Through

    E–2 Application Examples Hardware Connections for AUX Port Pass-Through The interface box connects to an auxiliary port on the enhanced decoder with an RS-232 cable. Reader Interface Box Power Supply To Power Receptacle To RS-232 Port RS-232 Cable RS-232 Straight Through Cable Personal Computer Enhanced...

  • Page 119: Flexible Interface Module

    Application Examples E–3 3. Save and exit the configuration. 4. Move internal selector (jumper) to the data entry position on the system board (B-5, B-6). 5. See Chapter 13 of Enhanced Decoder User Manual (Publication No. 2755-833) for additional information. Flexible Interface Module This application example describes how to configure and operate the readers when using an RS-232 cable connected to the flexible...

  • Page 120: Hardware Connections For The Flexible Interface Module

    E–4 Application Examples Hardware Connections for the Flexible Interface Module The interface box connects to one of the three communication ports on the flexible interface module with an RS-232 cable. The interface module requires an SFC1 Protocol Cartridge. Reader Interface Box Power Supply To Power Receptacle To RS-232 Port...

  • Page 121: Flexible Interface Module Setup

    Application Examples E–5 Flexible Interface Module Setup You need to configure the flexible interface module. Follow the steps below or refer to the Flexible Interface Module User Manual (Publication No. 2760-ND001) or the SFC1 or SFC2 Protocol Cartridge User Manuals (Publication Nos. 2760-ND002 or 2760-822).
  • Page 122 E–6 Application Examples ENTER A MAIN MENU SELECTION: 21 DUMB TERM. UNSPECIFIED PROTOCOL, 13fh (YES/NO) = YES. EDIT THIS SELECTION (YES/NO) ? ENTER A MAIN MENU SELECTION: 11 MODEM CONTROL (ENABLE/DISABLE) = DISABLE. 9600 BITS PER SECOND (YES/NO) = YES. 8 BITS NO PARITY (YES/NO) = YES.

  • Page 123: Slc 5/03 And Slc 5/04 Controllers

    Application Examples E–7 SLC 5/03 and SLC 5/04 This application example describes how to configure and operate the Controllers readers when using an RS-232 cable connected to the SLC 5/03 (Catalog No. 1747-L532) and SLC 5/04 controllers (Catalog Nos. 1747-L541, 1747-L542, and 1747-L543). ATTENTION: Do not install the RS-232 cable with power applied to either the interface box or SLC 5/03 or SLC 5/04 controllers.

  • Page 124: Hardware Connections For The Slc 5/03 And Slc 5/04 Controllers

    E–8 Application Examples Hardware Connections for the SLC 5/03 and SLC 5/04 Controllers The interface box connects to one of the communication ports on the SLC 5/03 or SLC 5/04 controllers with an RS-232 cable. You need to use a 25–9 pin cable or a 25–9 pin connector as shown below. Reader Interface Box Power Supply...

  • Page 125: Configuration Codes For The Slc 5/03 And Slc 5/04 Controllers

    Application Examples E–9 Configuration Codes for the SLC 5/03 and SLC 5/04 Controllers After making the necessary connections, set the reader to the settings in the table below to allow the reader to communicate with the SLC 5/03 or SLC 5/04 controllers. Description Menu Setting Serial Command Setting...

  • Page 126: Slc Program

    E–10 Application Examples 2. Configure Channel 0 in the Channel 0 User Mode Configuration screen. Note: Termination 1 is set for \a or Line Feed [LF], and Termination 2 is set for \d or Carriage Return [CR]. These terminators, along with the ARL instruction in the SLC, allow you to read one message at a time with [CR] [LF] terminators.

  • Page 127: Plc-5 Controller

    Application Examples E–11 PLC-5 Controller This application example describes how to configure and operate the readers when using an RS-232 cable connected to the PLC-5 controllers (Catalog Nos. 1785-L11B, 1785-L20B, 1785-L30B, 1785-L40B, 1785-L60B, and 1785-L80B) ATTENTION: Do not install the RS-232 cable with power applied to either the interface box or PLC-5 controllers.

  • Page 128: Hardware Connections For The Plc-5 Controllers

    E–12 Application Examples Hardware Connections for the PLC-5 Controllers The interface box connects to the PLC-5 controllers with an RS-232 cable. Reader Interface Box Power Supply To Power Receptacle To RS-232 Port RS-232 Cable RS-232 Null Modem Cable (Swap pins 2 and 3.) Personal Computer PLC-5...

  • Page 129: Plc-5 Controllers Setup

    Application Examples E–13 PLC-5 Controllers Setup You need to configure the Channel 0 port of the PLC-5 controllers. Follow the steps below or refer to the following publications: • Classic PLC-5 Family Programmable Controllers Hardware Installation Manual (Publication No. 1785-6.6.1) •...

  • Page 130: Plc Program

    E–14 Application Examples Note that Termination 1 is set for \0xa or Line Feed [LF], and Termination 2 is set for \0xd or Carriage Return [CR]. These terminators, along with the ARL instruction in the PLC-5 controllers, allow you to read one message at a time with [CR] [LF] terminators.

  • Page 131: Hardware Connections For The Dtam Plus Operator Interface

    Application Examples E–15 Refer to the following publications for additional information. • DTAM Plus Operator Interface Module User Manual (Publication No. 2707-800) • DTAM Plus Devicenet Operator Interface Document Update (Publication No. 2707-800.5) • DTAM Programming Software Programming Manual (Publication No. 2707-802) •...

  • Page 132: Configuration Codes For The Dtam Plus Operator Interface

    E–16 Application Examples Configuration Codes for the DTAM Plus Operator Interface After making the necessary connections, set the reader to the settings in the table below to allow the reader to communicate with the DTAM Plus Operator Interface. Description Menu Setting Serial Command Setting Preamble Disable...
  • Page 133 Application Examples E–17 The DTAM Plus DeviceNet supports the polled I/O method of exchanging data with a master, in the following sequence: 1. The designated master writes an output image to the DTAM Plus DeviceNet using the Poll Command message. 2.

  • Page 134: European Union Directives

    Low Voltage, by applying the safety requirements of EN 61131–2 Programmable Controllers, Part 2 – Equipment Requirements and Tests. For specific information required by EN 61131-2, see the appropriate sections in this publication, as well as the following Allen-Bradley publications: • Industrial Automation Wiring and Grounding Guidelines For Noise Immunity, publication 1770-4.1...

  • Page 135: Declaration Of Conformity

    F–2 European Union Directives Declaration of Conformity Below is a copy of the Declaration of Conformity for the AtomScan+ Bar Code Readers (Catalog Nos. 2755-LS7-SA, 2755-LS7-SB, 2755-LS7-RA, 2755-LS7-RB, 2755-LS7-SBV, and 2755-LS7-RBV) and power supply (Catalog No. 2755-LS7-PW1). 43500-256-01 Publication 2755-6.9...

  • Page 136: Glossary

    Glossary Autodiscriminate – The ability to decode several different bar code symbologies without changing configuration. AWG – Abbreviation for American Wire Gauge. This is a standard measuring system for wire sizes, listed from 0 (biggest) to 40 (smallest). A 26 AWG is equivalent to 0.0159 in. (0.405 mm) in diameter.
  • Page 137 G–2 Glossary Good Read – The event that occurs when a label’s data is accurately scanned and decoded. 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.
  • Page 138 Glossary G–3 Operational Commands – Serial commands from the host to the reader that control current operating parameters, counters, master label operations, and program management that are not stored in non-volatile RAM. Package Detector – A photo electric device used to sense to presence or absence of a package.
  • Page 139 G–4 Glossary Relay Driver – A TTL signal sent by the reader. The output is determined by the relay driver selection (by operational command). ROM – Read Only Memory. Memory that cannot be changed. RS-232 – RS-232 defines an interface between two devices such as the reader and host.
  • Page 140 Glossary G–5 Symbology – A set of bar code symbols, such as Code 39 or Code 128, that have special rules to define the widths and positions of bars and spaces to represent specific numeric or alphanumeric information. Tilt – Label (or reader) rotation around the centerline of the scan beam.
  • Page 141 Rockwell Automation Asia Pacific Headquarters, 27/F Citicorp Centre, 18 Whitfield Road, Causeway Bay, Hong Kong, Tel: (852) 2887 4788, Fax: (852) 2508 1846 World Wide Web: http://www.ab.com Publication 2755-6.9 – May 1997 40062-364-01 (B) Publication 2755-6.9 – May 1997 Copyright 1997 Allen-Bradley Company, Inc. Printed in USA...

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