Rockwell Automation 2755-G6-D User Manual

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ALLEN-BRADLEY

Bulletin 2755 Hand-Held Scanner with RS-232 Option

(Catalog No. 2755-G3-D or -G6-D)

User Manual

Important User Information

Solid state equipment has operational characteristics differing from those of electromechanical equipment. “Application Guidelines for Application, Installation, and Maintenance of Solid State Controls” (Publication SGI-1.1) describes some important differences between solid state equipment and hard–wired electromechanical devices. Because of this difference, and also because of the wide variety of uses for solid state equipment, all persons responsible for applying this equipment must satisfy themselves that each intended application of this equipment is acceptable.

In no event will the Allen-Bradley Company be responsible or liable for indirect or consequential damages resulting from the use or application of this equipment.

The examples and diagrams in this manual are included solely for illustrative purposes. Because of the many variables and requirements associated with any particular installation, the Allen-Bradley Company cannot assume responsibility or liability for actual use based on the examples and diagrams.

No patent liability is assumed by Allen-Bradley Company with respect to use of information, circuits, equipment, or software described in this manual.

Reproduction of the contents of this manual, in whole or in part, without written permission of the Allen-Bradley Company is prohibited.

PHOTOSWITCH is a registered trademark of Allen-Bradley Company, Inc.

Hand-Held Scanner with RS-232 Option

A–B

Using this Manual

Overview of Scanner

Chapter 1

Chapter Objectives 1–1. . . . . . . . . . . . . . . . . . . . . . . . . .

Contents of Package 1–1. . . . . . . . . . . . . . . . . . . . . . . . .

Intended Audience 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . .

Overview of Manual 1–2. . . . . . . . . . . . . . . . . . . . . . . . .

Warnings and Cautions 1–3. . . . . . . . . . . . . . . . . . . . . . .

Related Publications 1–3. . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 2

Chapter Objectives 2–1. . . . . . . . . . . . . . . . . . . . . . . . . .

Function of Scanner 2–1. . . . . . . . . . . . . . . . . . . . . . . . . .

Operating Modes 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Hand-Held Mode 2–2. . . . . . . . . . . . . . . . . . . . . . . . .

Autosense Mode 2–2. . . . . . . . . . . . . . . . . . . . . . . . .

Setup Parameters 2–3. . . . . . . . . . . . . . . . . . . . . . . . . . . .

General Setup 2–3. . . . . . . . . . . . . . . . . . . . . . . . . . .

Serial Communication 2–3. . . . . . . . . . . . . . . . . . . .

Message Format 2–4. . . . . . . . . . . . . . . . . . . . . . . . . .

Symbology 2–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Serial Commands 2–4. . . . . . . . . . . . . . . . . . . . . . . . . . .

Ordering a Scanner 2–5. . . . . . . . . . . . . . . . . . . . . . . . . .

Scanner Accessories 2–6. . . . . . . . . . . . . . . . . . . . . . . . .

Usin the Scanner

Chapter 3

Chapter Objectives 3–1. . . . . . . . . . . . . . . . . . . . . . . . . .

Physical Description 3–1. . . . . . . . . . . . . . . . . . . . . . . . .

LED Indicators 3–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Safety Labels 3–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Scanning Ranges 3–4. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating Scanner 3–6. . . . . . . . . . . . . . . . . . . . . . . . . . .

Beep 3–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating Tips 3–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Troubleshooting 3–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table of Contents

Hand-Held Scanner with RS-232 Option

Setup Instructions

eneral Setup Parameters

Chapter 4

Chapter Objectives 4–1. . . . . . . . . . . . . . . . . . . . . . . . . .

Connecting Scanner to Host 4–1. . . . . . . . . . . . . . . . . . .

Installing Interface Cable 4–2. . . . . . . . . . . . . . . . . .

Removing Interface Cable 4–3. . . . . . . . . . . . . . . . .

Installing Power Supply 4–4. . . . . . . . . . . . . . . . . . .

Scanner Configuration Guidelines 4–5. . . . . . . . . . . . .

Scanner Default Settings 4–7. . . . . . . . . . . . . . . . . . . . .

Resetting Factory Defaults 4–10. . . . . . . . . . . . . . . . . . . .

Chapter 5

Chapter Objectives 5–1. . . . . . . . . . . . . . . . . . . . . . . . . .

System Status 5–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power Consumption 5–3. . . . . . . . . . . . . . . . . . . . . . . . .

Beeper Operation 5–4. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Capture Count 5–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Spotter Beam 5–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Autosense Mode 5–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

External Trigger Operation 5–8. . . . . . . . . . . . . . . . . . .

Serial Communication Parameters

Chapter 6

Chapter Objectives 6–1. . . . . . . . . . . . . . . . . . . . . . . . . .

Baud Rate 6–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Serial Data Transmission Parameters 6–3. . . . . . . . . . .

Protocol 6–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

XON/XOFF 6–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CTS 6–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

RTS 6–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Intercharacter Delay 6–10. . . . . . . . . . . . . . . . . . . . . . . . .

Serial Transmit Buffer 6–11. . . . . . . . . . . . . . . . . . . . . . . .

Full Buffering 6–11. . . . . . . . . . . . . . . . . . . . . . . . . . . .

No Buffering 6–11. . . . . . . . . . . . . . . . . . . . . . . . . . . .

One Label Buffering 6–11. . . . . . . . . . . . . . . . . . . . . .

Table of Contents

Hand-Held Scanner with RS-232 Option

Message Format Parameters

bologies

Chapter 7

Chapter Objectives 7–1. . . . . . . . . . . . . . . . . . . . . . . . . .

Message Format 7–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Prefix 7–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Suffix 7–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Scanner Identifier 7–4. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Code Identifier 7–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Preamble or Postamble 7–6. . . . . . . . . . . . . . . . . . . . . . .

Preamble 7–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Postamble 7–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

No Read Message 7–10. . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 8

Chapter Objectives 8–1. . . . . . . . . . . . . . . . . . . . . . . . . .

Label Lengths 8–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Code 39 8–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Modulo 43 Check Character 8–3. . . . . . . . . . . . . . .

Transmit Stop/Start Characters 8–3. . . . . . . . . . . . .

Minimum Length 8–4. . . . . . . . . . . . . . . . . . . . . . . . .

Maximum Length 8–4. . . . . . . . . . . . . . . . . . . . . . . .

UPC (A and E) 8–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Supplements 8–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Expanded UPC-E 8–5. . . . . . . . . . . . . . . . . . . . . . . .

Transmit Number System Digit 8–6. . . . . . . . . . . .

Transmit Check Digit 8–6. . . . . . . . . . . . . . . . . . . . .

UPC to EAN Translation 8–7. . . . . . . . . . . . . . . . . .

EAN/JAN 8–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Supplements 8–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Transmit Number System Digit 8–9. . . . . . . . . . . .

Transmit Check Digit 8–9. . . . . . . . . . . . . . . . . . . . .

Interleaved 2 of 5 8–10. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Check Digit 8–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Minimum Length 8–11. . . . . . . . . . . . . . . . . . . . . . . . .

Maximum Length 8–11. . . . . . . . . . . . . . . . . . . . . . . .

Standard 2 of 5 8–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Minimum Length 8–12. . . . . . . . . . . . . . . . . . . . . . . . .

Maximum Length 8–12. . . . . . . . . . . . . . . . . . . . . . . .

iii

Table of Contents

Hand-Held Scanner with RS-232 Option

Code 128 8–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Minimum Length 8–13. . . . . . . . . . . . . . . . . . . . . . . . .

Maximum Length 8–13. . . . . . . . . . . . . . . . . . . . . . . .

Codabar 8–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Transmit Stop/Start Characters 8–14. . . . . . . . . . . . .

Minimum Length 8–15. . . . . . . . . . . . . . . . . . . . . . . . .

Maximum Length 8–15. . . . . . . . . . . . . . . . . . . . . . . .

Serial Commands

ications

Speci

Chapter 9

Chapter Objectives 9–1. . . . . . . . . . . . . . . . . . . . . . . . . .

Serial Command Format 9–1. . . . . . . . . . . . . . . . . . . . . .

Manual Scanning Interaction 9–2. . . . . . . . . . . . . . . . . .

ACK/NAK Protocol 9–3. . . . . . . . . . . . . . . . . . . . . . . . .

Power Standby and Serial Commands 9–4. . . . . . . . . .

Communication Parameter Changes 9–4. . . . . . . . . . . .

Chapter 10

Appendix A Bar Code Test Symbols

Appendix B Digit Selection Symbols

Appendix C Autosense Mode

Appendix D Interface Cable Pinouts

Appendix E Maintenance

Appendix F Scanner Commands

Glossary

Index

3.1

.A7.B9.A

4 4 4 C

2.B 3

3.B

4.A 7

Table of Contents

Hand-Held Scanner with RS-232 Option

Figures

Scanning Ranges 3–5. . . . . . . . . . . . . . . . . . . . . . . . . . . .

1 2 3

System Connections 4–1. . . . . . . . . . . . . . . . . . . . . . . . .

Installing Interface Cable 4–2. . . . . . . . . . . . . . . . . . . . .

Removing Interface Cable 4–3. . . . . . . . . . . . . . . . . . . .

Autostand C–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Tables

Interface Cables 2–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Scanner Accessories 2–6. . . . . . . . . . . . . . . . . . . . . . . . .

LED Indicators 3–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Scanning Ranges: Standard/Long Range Scanner 3–4

Scanner Default Settings 4–7. . . . . . . . . . . . . . . . . . . . .

Code Identifier Characters 7–5. . . . . . . . . . . . . . . . . . . .

Hexadecimal Conversion Table 7–8. . . . . . . . . . . . . . . .

Serial Programming Command Examples 9–2. . . . . . .

Chapter

Using this Manual

A–B

Chapter Objectives

Contents of Package

ntended

Audience

This chapter gives an overview of the manual including:

• Contents of Package

• Intended Audience

• Overview of Manual

• Warnings and Cautions

• Related Publications

You should receive the following items when ordering the Catalog No. 2755-G3-D or 2755-G6-D Scanner:

• Scanner

• Scanner Holder

• User Manual

No special knowledge is required to read this manual or use the scanner. However, this manual does not show you how to generate an application program on the host computer to receive the scanned data.

1–1

Chapter 1

Using this Manual

Overview of Manual

This manual shows how to set up and use the scanner

with an RS-232 serial device for non-contact scan-

ning applications. The contents of each chapter are:

Chapter Title Purpose

1 Using this Manual Provides an overview of this manual. 2 Overview of Scanner

3 Using the Scanner

4 Setup Instructions

8 Symbology Parameters

9 Serial Commands

10 Specifications Details specifications of the scanners.

Communication Parameters

General

Operating Parameters

Serial

Message

Format Parameters

Gives an overview of scanner functions, operating modes, and scanner setup parameters.

Provides basic instructions on how to use the scanner for non-contact scanning.

Shows how to connect the scanner to the serial host device and how to select scanner operating parameters.

Covers parameters specific to the operation of the scanner including beeper, power consumption, and capture count. Parameters are selected by scanning bar code labels.

Covers parameters that control serial communications between the scanner and the host device. Parameters are selected by scanning bar codes.

Covers parameters that control the format of messages transmitted to the host. Parameters are selected by scanning bar codes.

Covers parameters that enable bar code symbologies the scanner is capable of reading. Symbologies are disabled or enabled by scanning bar codes.

Describes serial commands and communications between the scanner and host computer. It also covers precautions when operating in serial communication mode.

1–2

Chapter 1

Using this Manual

arning and

Caution Symbols

elated

Publications

This manual contains the following caution and warning symbols.

CAUTION:

A laser caution symbol that appears where laser light is present.

WARNING

A warning symbol means people might

be injured if procedures are not followed.

CAUTION

A caution symbol is used when equip-

ment may be damaged if procedures are not followed.

Below is a list of related publications you may need to refer to when using the scanners.

• Publication No. 2755-921

Bar Code Basics Describes bar code symbologies, equipment, and typical applications.

• Publication No. 2755-2.44

Product Data for Visible Laser Diode Hand-Held Scanners

1–3

Chapter

Overview of Scanner

A–B

Chapter Objectives

unction

of Scanner

This chapter gives an overview of the scanner including:

• Function of Scanner

• Operating Modes

• Scanner Setup Parameters

• Serial Commands

• Accessories

The scanner is capable of scanning, decoding, and transmitting bar code data to devices equipped with RS-232 serial communication ports, including personal computers and terminals.

You configure the scanner for serial communications by modifying the built-in setup parameters of the scanner. Parameters are selected based on the requirements of the host device and the types of bar codes used in your application.

The scanner is easily configured by scanning the appropriate bar code labels in Chapters 4 through 8 of this manual. When a configuration label is scanned, the scanner sends a 1 or 2 line acknowledgement message to your terminal display.

Important: It is your responsibility to provide the application program on the host device that will receive and store the data.

2–1

Chapter 2

Overview of Scanner

Operatin Modes

The scanner functions in one of two operating modes:

Hand-Held mode or Autosense mode.

Hand-Held Mode

In hand-held mode, you hold the scanner in your

hand and press the trigger every time you want to

scan a bar code symbol.

Chapter 3 provides details on using the scanner in

hand-held mode.

Autosense Mode

In this mode the scanner operates in an optional

Autostand (Catalog No. 2755-NS2) for hands-free

operation. The scanner uses a low level laser beam as

an internal object sensor.

When the scanner is placed in the stand it becomes

immediately active for reading any bar code label

presented to it. The scanner is triggered when the

scan beam path (between the reflector on the stand

and the scanner) is broken.

You also have the option of removing the scanner

from the stand and using it as a conventional

hand-held scanner. The low level beam will not

interfere with hand-held use of the scanner.

2–2

When replaced in the stand the scanner reverts

automatically to the Autosense mode.

Note: Autosense mode can also be set up using a

PHOTOSWITCH reflector. See Accessories.

Chapter 2

Overview of Scanner

Setup Parameters

The built-in setup parameters of the scanner fall into four general categories:

• General Setup

• Serial Communication

• Message Format

• Symbologies

Each category controls parameters that relate to specific functions of scanner operations or communications with the host device.

General Setup Parameters

General setup parameters are basic to the operation of the scanner. These parameters control:

• System Status

• Power Consumption

• Beeper Operation

• Capture Count

• Spotter Beam

• Autosense Mode

• External Trigger

General parameters are set by scanning bar code labels in Chapter 5.

Serial Communication Parameters

The serial communication parameters define how the scanner will communicate with the host computer through its serial interface including:

• Baud Rate

• Serial Data Parameters

• Intercharacter Delay

• Protocol

• Serial Transmit Buffer

Serial Communication parameters are set by scanning bar code labels in Chapter 6.

2–3

Chapter 2

Overview of Scanner

Message Format Parameters

Parameters that control the format of messages

transmitted to the host include:

• Prefix

• Suffix

• Scanner Identifier

• Code Identifier

• Preamble

• Postamble

Message Format parameters are enabled or disabled

by scanning bar codes in Chapter 7.

Symbology Parameters

The symbology parameters enable or disable the

types of bar codes the scanner is capable of reading.

The scanner supports the following symbologies:

2–4

Serial Commands

• Code 39 • UPC

• Interleaved 2 of 5 • EAN/JAN

• Standard 2 of 5 • Code 128

• Codabar

Symbologies are selected based on the requirements

of the application.

You enable or disable symbologies by scanning bar

codes in Chapter 8.

The scanner also supports a set of serial commands

that can be sent from the host to configure scanner

operations and communications between the scanner

and host device.

The serial commands perform the same functions as

scanning the menus of bar code labels. Chapter 9

covers topics related to serial programming.

Chapter 2

Overview of Scanner

Orderin a Scanner

The following figure shows the catalog number breakdown for ordering a scanner.

2755 - G 3 - D

Bulletin Number

Device TypeDevice Type

G = Gun

Scan Range

3 = Standard Range 6 = Long Range

Decoder Type

D = RS-232

2–5

Chapter 2

Overview of Scanner

Scanner Accessories

Catalog No.

2755-NCR1 RS-232 DCE, Female, 8 Foot (2.4 Meter) Coiled Cable

2755-NCR2

This cable is compatible with the AUX port on the Single and Dual-Head Enhanced Bar Code Decoders (Cat. No. 2755-DS1A, -DD1A).

T able 2.A lists the RS-232 interface cables available

for the scanners. Cables are available with different

pinouts to support either DTE or DCE configurations.

Appendix D lists the pinouts for each cable.

Table 2.A

Interface Cables with 25 Pin D-Type Connector

Description

This cable is typically used with IBM PC compatible computers. You may have to use an adapter with this cable if your computer has a 9-pin port.

RS-232 DTE, Male, 8 Foot (2.4 Meter) Coiled Cable

T able 2.B lists other accessories for the scanners.

Table 2.B

Scanner Accessories

Catalog No.

2755-NS1 Scanner Holder (included with scanner). 2755-NS2

Autostand 2755-GB1 Holster Belt 2755-GH5 Scanner Holster (can function on belt or sling).

2755-PW1 5V Power Supply, 110 VAC, 60 Hz

2755-NT1 Reflective Tape, 2 inch (50.8 mm) square

92-39 92-47

Reflective tape is supplied with Autostand. Additional reflective

Circular Reflector, 3 inch (76.2 mm) diameter

Circular Reflector, 1 1/4 inch (31.8 mm) diameter

tape is available by ordering Catalog No. 2755-NT1.

Allen-Bradley PHOTOSWITCH part number.

Description

2–6

Chapter

Phy

Using the Scanner

A–B

Chapter Objectives

sical

Description

This chapter covers some basic topics on the operation and use of the scanner including:

• Physical Description

• LED Indicators

• Safety Labels

• Scanning Ranges

• Operating Scanner

• Beep

• Operating Tips

• Troubleshooting

The scanners use a low power visible laser diode light source for non-contact scanning applications.

The trigger in the handle of the scanner turns on the light beam. The beam exits the window on the front of the scanner.

LED Indicators

Scanning Window

Trigger

Cable Connection

Note: If your scanner is enabled for Autosense mode, the internal object sensor is automatically triggered when bar codes are presented to it.

3–1

Chapter 3

LED

Using the Scanner

Indicators

Light, reflected off the bar code symbols, passes back through the window and is detected by light sensors. When a label is read, the laser is automatically turned off until the next pull of the trigger.

The laser beam looks like a narrow red line of light. It is actually a tiny spot of light traveling very fast. The laser spot moves across the bar code symbol at approximately 35 scans/second. The bar code is scanned many times in a short period of time.

The rear of the scanner has two indicators that provide a visual indication of scanner operation.

GOOD READ

SCANNING

3–2

T able 3.A defines the color and function of each LED indicator.

Table 3.A LED Indicators

LED Label

GOOD READ Green

SCANNING Yellow

Color Function

The GOOD READ light momentarily turns on (and you will hear a beep) when a bar code symbol has been successfully decoded.

The SCANNING light turns on when the device is scanning.

Chapter 3

Using the Scanner

Safet Labels

The scanners use a low power visible laser diode. As with any bright light source, such as the sun, you should avoid staring directly into the beam. Momentary exposure to a CDRH Class II laser is not known to be harmful.

The following figure shows the location of all safety labels as they appear on the scanner.

CAUTION

Use of controls, adjustments, or perform-

ance of procedures other than those specified herein may result in hazardous visible light exposure.

3–3

Chapter 3

Using the Scanner

Scannin Ranges

The scanners can read bar code labels at various distances depending on the bar code width (width of narrowest element in bar code, either bar or space).

T able 3.B defines the scanning ranges for both the standard and long range scanner. Scanning ranges are listed for symbols with bar code widths from 6.0 mil to 55.0 mil (.15 mm to 1.40 mm).

Table 3.B Scanning Ranges: Standard and Long Range Scanners

Bar Code

Width

6.0 mil

(.15 mm)

7.5 mil

(.19 mm)

10.0 mil

(.25 mm)

15.0 mil

(.38 mm)

20.0 mil

(.51 mm)

40.0 mil

(1.02 mm)

55.0 mil

(1.40 mm)

Standard Range

(2755-G3-D)

3.0 in - 5.0 in

7.6 cm - 12.7 cm

2.5 in - 7.5 in

6.4 cm - 19.0 cm

1.0 in - 10.0 in

2.5 cm - 25.4 cm

1.5 in - 14.0 in

3.8 cm - 35.6 cm

2.5 in - 18.0 in

6.4 cm - 45.7 cm

9.0 in - 25.0 in

22.9 cm - 63.5 cm

12.0 in - 30.0 in

30.5 cm - 76.2 cm

Long Range

(2755-G6-D)

N.A.

8.0 in - 22 in

20.3 cm - 55.9 cm 12 in - 36 in

30.5 cm - 91.4 cm 23 in - 60 in

58.4 cm - 152.4 cm 23 in - 66 in

58.4 cm - 167.6 cm

3–4

Figure 3.1 illustrates the scanning ranges in graphic form. The figure shows that the scanning range of the standard range scanner for a 40.0 mil (1.02 mm) bar code width is 9.0 - 25.0 inches (22.9 - 63.5 cm). The scanning range of the long range scanner for the

40.0 mil (1.02 mm) bar code width is 23 - 60 inches (58.4 - 152.4 cm).

Standard Range Scanner

Catalog No. 2755-G3-D

Narrow

Bar Width

Scanner

0.006 in

(0.15mm)

0.0075 in (0.19mm)

inches

centimeters

Figure 3.1 Scanning Ranges

0.010 in

(0.25mm)

0.015 in

(0.38mm)

0.020 in

(0.51mm)

10 20 30

25.4 50.8 76.2

12.7

Chapter 3

Using the Scanner

0.040 in

(1.02 mm)

(1.40 mm)

38.1

Depth of Field

0.055 in

63.5

Width

Scanning

Beam

(inches)

Long Range Scanner

Catalog No. 2755-G6-D

Scanner

Narrow

Bar Width

0 inches

centimeters

15.0 mil

(0.38 mm)

20.0 mil

(0.51mm)

40.0 mil

(1.02 mm)

55.0 mil

(1.40 mm)

25.4 50.8 76.2 101.6 127.0

2010

Depth of Field

Width

Scanning

Beam

(inches)

504030

60 70

152.4 177.8

3–5

Chapter 3

Using the Scanner

Operatin

Follow these basic steps to operate scanner.

Scanner

1. Check

Before using the scanner, check all cable connections to make sure they are secure.

Chapter 4 defines connections between scanner, power supply, and serial communication device.

2. Test

Aim the scanner at the work surface and press the trigger. You should see the red beam on the work surface, and the SCANNING indicator on the back of the unit should be on.

2. Scan

Aim the scanner at the bar code and press the trigger. Adjust the scanner position so the beam is centered on the bar code and overlaps it on both sides. When the scanner has read the symbol:

• You will hear a beep and/or ...

• The GOOD READ indicator

will turn on momentarily.

• The red scan beam will turn off.

If you fail to scan, see the Trouble- shooting section.

3–6

Chapter 3

g T

RIGHT

Using the Scanner

eep

Operatin

ips

When scanning a bar code symbol, listen for one short, high tone. It means the bar code has been decoded successfully.

A low-high-medium sequence of beeps on power up means the scanner has been configured in a continuous power mode for operation with serial communication devices.

Hold at an Angle

Do not hold the scanner directly over the bar code. In this position light can reflect back into the scanner and prevent decoding. Angle the scanner slightly.

Scan the Entire Symbol

• Move the scanner so the beam crosses every bar

and space on the symbol.

• The larger the symbol the farther away you should

hold the scanner.

RIGHT

• Hold the scanner closer for symbols with bars that

are close together.

• If you have difficulty reading a label hold the

scanner beyond the recommended range in T able

3.B and then move the scanner closer.

WRONG

3–7

Chapter 3

Using the Scanner

roubleshootin

This section provides a list of things to check if you are having problems scanning.

Note: Scanning problems are most often caused by poor quality bar code symbols. If scanning problems arise, test your bar code system using the high quality bar code test symbols supplied in Appendix A.

• Make sure the scanner is configured to read the

the type of bar codes you are trying to scan.

• Check if the bar code symbol is worn or damaged.

• Verify that you are holding the scanner at an angle.

• Make sure the beam crosses every bar and space

on the symbol.

• Check for loose cable connections.

• Check that there is power to the scanner and serial

communication device.

If you perform these checks and the symbol still does not scan, contact your Allen-Bradley representative.

3–8

Chapter

Setup Instructions

A–B

Chapter Objectives

Connectin Scanner to Host

Host

Device

This chapter provides setup instructions including:

• Connecting Scanner to Host

• Scanner Configuration Guidelines

• Scanner Default Settings

• Resetting Factory Defaults

Before configuring parameters of the scanner, you must connect the scanner to the host device using the appropriate interface cable and power supply. Figure

4.1 shows the connections.

Figure 4.1 System Connections

Power Supply

Catalog No. 2755-PW1

Scanner

Cat. No. 2755-G3-D or

2755-G6-D

RS-232 Serial Port

Power Supply

Receptacle

Power Source

D-Type

Connector

Cat. No. 2755-NCR1 or -NCR2

4–1

Chapter 4

Setup Instructions

Installing Interface Cable

The interface cable has a modular plug (resembling a telephone connector) on one end and a 25 pin D-T ype connector on the other end. The available interface cables are listed in T able 2.A.

CAUTION:

Do not connect scanner to host until host

device is turned off. Failure to do this could result in damage to the scanner.

T o install the interface cable:

1. Turn power to host computer OFF.

2. Insert the modular plug into the opening at the bottom of the scanner’s handle (see Figure 4.2). The modular plug is keyed to insure proper insertion. Press firmly until the plug clicks into place.

4–2

Figure 4.2 Installing Interface Cable

3. Plug the 25 pin D-Type connector into the RS-232 receiving port of the host device.

Note: You may need an adapter if your computer has a 9-pin port.

Chapter 4

Setup Instructions

Removing Interface Cable

At some point you may have to replace the interface cable with another cable.

T o remove the interface cable, follow these steps.

CAUTION:

Do not remove the interface cable until host

device is turned off. Failure to do this could result in damage to the scanner.

1. Turn power to host device off.

2. Disconnect power supply from AC power source.

3. Disconnect scanner from host device.

4. Insert a straightened paper clip into the cable release hole as shown in Figure 4.3.

5. Press down firmly on the paper clip to release the retainer and gently pull the connector out of the scanner.

Figure 4.3 Removing Interface Cable

Cable Release Hole

4–3

Chapter 4

Setup Instructions

Installing Power Supply

The external power supply (Catalog No. 2755-PW1) provides power to the scanner. One end connects to a standard AC receptacle supplying the appropriate voltage level. The other end plugs into the power receptacle of the 25 pin D-T ype connector.

CAUTION:

The Catalog No. 2755-PW1 Power Supply

has the following polarity:

+5 V Ground

If using another power supply, the polarity must be the same.

T o install the power supply:

1. Power to the host device must be turned off.

4–4

CAUTION:

Do not connect power supply until the host

device is turned off. Failure to follow this caution could result in damage to the scanner or host device.

2. Plug the circular connector into the power supply receptacle of the 25-pin connector.

3. Plug the power supply into a standard AC power source.

4. Review all connections. At this point all components of the system should be connected. Power on the host device.

5. Aim the scanner down at the work surface and press the trigger. You should see the red beam and the SCANNING indicator on the back of the unit should be on.

Before configuring the scanner, review the next two sections of this chapter.

Chapter 4

Setup Instructions

Scanner Configuration Guidelines

Configuration is the process of enabling or disabling scanner operating parameters. The host system and the types of bar codes that will be encountered will determine which parameters should be enabled or disabled.

Follow three basic steps when selecting parameters:

1. Review the rest of this manual to familiarize yourself with each group of scanner parameters.

2. Review the requirements of your host system and application. This will enable you to determine if the factory defaults must be changed.

3. Enable or disable the relevant parameters by scanning the bar codes in Chapters 5 through 8. The section that follows describes this process. All configuration bar code labels in this manual are Code 128, Character Set B.

Scanning Menu Labels

The scanner does not have a distinct configuration mode. Instead, it automatically recognizes and reacts to labels you scan. You do not scan a label to enter

or exit configuration mode.

Most parameters are set by scanning one label. For example, assume that to be compatible with your host system, the scanner’s baud rate setting must be changed from its default value of 9600 to 2400 baud.

T o make this change, locate the baud rate bar code menu in Chapter 5 and scan the label to the left of

2400 Baud. The correct label is shown below.

A successful scan is indicated by two short-high beeps. An unsuccessful scan produces no beeps and requires you to rescan the bar code.

Most parameters are modified in this way. When you are finished with modifications you can resume normal bar code scanning.

2400 Baud

4–5

Chapter 4

Setup Instructions

Note: When enabling or disabling a parameter, be sure the scanner beam illuminates only one symbol at a time. The layout of this manual minimizes the accidental scanning of multiple labels.

Some parameters require that you scan multiple labels to modify a setting. An example is the Intercharacter Delay parameter. To set the intercharacter delay to 5 milliseconds (msec):

1. Scan the Intercharacter Delay (GB) label and listen

for one short beep.

Intercharacter Delay=xx msec

The dotted boxes to the right of the label indicate that you must scan two additional labels; one for the digit 0 and the second for the digit 5.

2. After the beep, scan the bar code beside 0 in Appendix B, and listen for one short-high beep.

3. Scan the bar code beside 5 in Appendix B and listen for two short beeps. The two beeps indicate that you scanned the last parameter argument.

If you scan the Intercharacter Delay (GB) label and then scan a normal data label (instead of 0 and 5), a normal tone is emitted in response to the data label, and the programming command is ignored. No exit

code is required to resume normal operations.

4–6

Chapter 4

Setup Instructions

Scanner Default Settings

Parameter

Power Consumption Enable Continuous Full Power

Enable Standby

Beeper Operation Beeper Off

Beeper On; Volume Low Beeper On; Volume Medium Beeper On; Volume Loud

Capture Count 1 or 2 1

External Trigger Disable

External Trigger (+) External Trigger (–)

Spotter Beam Enable or Disable Disable

Autosense Mode Enable or Disable Disable

Parameter

Prefix None, STX, or SOH None Suffix None, ETX, CR, LF, HT, or

Scanner Identifier Disable or a number (01- 99) Disable

Code Identifier Disable or Enable Disable

Preamble None or 1-4 characters None

Postamble None or 1-4 characters None

T able 4.A lists the factory default settings for each group of scanner parameters.

Table 4.A Scanner Default Settings

General Scanner Setup

Options Default

Enable Standby

Beeper On; Volume Loud

Disable

Message Format

Options Default

CR and LF

4–7

Chapter 4

Setup Instructions

Table 4.A (continued) Scanner Default Settings

Serial Communication

Parameters

Baud Rate 300, 600, 1200, 2400, 4800, 9600,

19200

Serial Data

Transmission

(Start Bit, Data Bits,

Stop Bits, Parity)

Intercharacter Delay User Defined Delay (in msec) or

Protocol XON/XOFF, CTS, RTS or None None

Serial Transmit Buffer Full Buffering, No Buffering,

7 Data Bits/1Stop Bit/Odd Parity

Space Parity 7 Data Bits/2 Stop Bit/Odd Parity

8 Data Bits/1Stop Bit/Odd Parity

8 Data Bits/2Stop Bit/No Parity

No Intercharacter Delay

One Label Buffering

Options Default

Even Parity Mark Parity

Even Parity Mark Parity Space Parity

Even Parity Mark Parity Space Parity No Parity

9600

7 Data Bits/1Stop Bit/ Space Parity

No Intercharacter Delay

Full Buffering

Code

Code 39 Disable Code 39

4–8

Symbologies

Options Default

Enable Standard Code 39 Enable Full ASCII Code 39

Enable or Disable Modulo 43 Check Character

Enable or Disable Transmission of Start/Stop Characters

Minimum Label Length 1 Maximum Label Length 32

Enable Standard Code 39

Disable

Chapter 4

Setup Instructions

Table 4.A (continued) Scanner Default Settings

Symbologies

Code

UPC (A and E) Disable UPC (A and E)

Enable with 2 or 5 Digit Supplements Enable without 2 or 5 Digit Supplements

Enable or Disable Expanded UPC-E Disable Enable or Disable Transmission

of Number System Digit Enable or Disable Transmission

of Check Digit Enable/Disable UPC to EAN Translation Disable

EAN/JAN (8 or 13 digit) Disable EAN/JAN (8 or 13 digit)

Enable with 2 or 5 Digit Supplements Enable without 2 or 5 Digit Supplements

Enable or Disable Transmission Number System Digit

Enable or Disable Transmission of Check Digit

Interleaved 2 of 5 Disable Interleaved 2 of 5

Enable without Check Digit Enable with Check Digit

Minimum Label Length 2 Maximum Label Length 32

Standard 2 of 5 Enable or Disable Standard Code 2 of 5 Disable

Minimum Label Length 4 Maximum Label Length 32

Code 128 Enable or Disable Code 128 Enable

Minimum Label Length 1 Maximum Label Length 32

Codabar Enable or Disable Codabar Disable

Enable or Disable Transmission Start/Stop Characters

Minimum Label Length 1 Maximum Label Length 32

Options Default

Enable without 2 or 5 Digit Supplements

Enable

Disable

Enable

Disable

4–9

Chapter 4

Setup Instructions

esettin

Factory Defaults

T o reset the scanner to the factory default settings, scan label ZA.

Note: Scanning this label produces a bi-level tone.

Reset to Factory Defaults

4–10

Chapter

General Setup Parameters

A–B

Chapter Objectives

ste

Status

This chapter describes parameters specific to the operation of the scanner including:

• System Status

• Power Consumption

• Beeper Operation

• Capture Count

• Spotter Beam

• Autosense Mode

• External Trigger Operation

T o set specific operating parameters, scan the appropriate bar code labels in each section.

Note: Throughout this chapter, default settings for parameters are flagged by an asterisk (*).

The labels in this section allow you to examine the configuration of your system.

T o send a list of currently programmed parameters to the display device, scan option ZB. A sample display is shown on the top of the next page.

Note: Scanning ZB may interfere with your terminal software, depending on your application.

Display Configuration

5–1

Chapter 5

General Setup Parameters

Display Configuration Example (ZB Command)

Model 5312

Power Data Bits Char Delay Scanner ID Preamble Code ID Char Serial Buffr

Armed ASCII

Addendum Xmit S/S Check Ch Send Sys # Send Ck Ch UPCE Expand Limits

Redundant Scan=Capture Count, Armed=Enabled, Addendum=Supplements

Shaded parameters are not supported in this product.

Standby 8 00 None None No Full

39Parameter Yes

– No No

–

01–32

UPC Yes

–

– –

Yes Yes

–

Beeper Parity Protocol Prefix Postamble Labels Display Duplex Half

Symbology

EAN

–

– –

Yes Yes

– –

I 2/5

– – –

02–32

Loud None Off Off None Unbuffred

S 2/5

– – – – – – –

04–32

128

Yes

– – – – – – –

01–32

V ersion Baud Rate Stop Bits RTS Suffix

Redundant Scan Label Delay Auto Label Bfr Off

Codabr

– –

–

– – –

01–32

Scan option ZC to send the program version number followed by carriage return-line feed (CR-LF) to the display device. The version number is sent in the form ##.## (1.00, for example).

2.51 9600 1 Rcv Rdy+ CR/LF No 00

5–2

ZC Transmit Version Number

Scan option @C to send an identification code which verifies the specific program type of the scanner to the display device.

@C Transmit Program ID

Note: Options ZC and @C are used for troubleshooting to identify the scanner.

Chapter 5

General Setup Parameters

ower

Consumption

You can select one of two power consumption modes for the scanner. Option @A supplies full power to the scanner at all times. Option @B allows the scanner to revert to standby mode after a successful read. This mode is a power conservation feature whereby the scanner uses extremely low power (microwatts).

T o supply full power to the scanner at all times, scan label @A.

Enable Continuous Full Power

Note: The scanner automatically uses full power when configured to operate in Autosense mode.

T o allow the scanner to revert to standby mode after a successful read, scan label @B.

Enable Standby Power *

5–3

Chapter 5

General Setup Parameters

eeper

Operation

T o disable or set the volume of the beeper, scan the appropriate option below.

Beeper Off

Beeper On;

Volume Low

Beeper On; Volume Medium

Beeper On; Volume Loud *

5–4

Chapter 5

General Setup Parameters

Capture Count

Capture Count determines the number of successful, identical decodes that must occur for a valid read. You can use the capture count to enhance the security of the bar code reader.

Option BC sets the capture count to 1 which requires one successful decode.

Scan option BD to set the capture count to 2. Two identical decodes must occur for a valid read.

BD Capture Count = 2

Because the laser scans a label many times a second, you will notice little or no change in the speed of the decode.

Capture Count = 1 *

5–5

Chapter 5

General Setup Parameters

Spotter Bea

You can enable the scanner to use a spotter beam which helps when aiming the scanner. Each time the scanner is triggered it generates a bright laser spot for a fixed duration, after which the scanner beam is activated.

The spotter beam is recommended for long range applications.

Scanning label NP disables the spotter beam. Hold

the trigger for two seconds after scanning.

Disable Spotter Beam *

T o enable the spotter beam, scan label NQ, then scan a digit from 0 – 9 (Appendix B), holding the trigger for two seconds after scanning the digit. Each digit enables the spotter beam for a specified duration as shown in the table below. For example, to enable the spotter beam for 200 milliseconds, scan the NQ label, then scan code 3 in Appendix B.

5–6

Enable Spotter Beam=xx msec

This Digit Enables Spotter Beam for:

0   1   2   3   4   5   6   7   8   9  

Note: Spotter beam and Autosense mode are mutually exclusive parameters. Only one of these parameters can be enabled at a time.

Chapter 5

General Setup Parameters

utosense Mode

In Autosense mode, the scanner has an internal object sensor allowing you to operate the scanner in an optional Autostand (Catalog No. 2755-NS2) for hands-free operation.

When the scanner is placed in the Autostand it becomes immediately active for reading any bar code label presented to it. The scanner is triggered when a bar code label breaks the scan beam path between the reflective label on the stand and the scanner.

T o activate Autosense mode, scan the Enable

Autosense (NO) label. You must hold the trigger down for two seconds after scanning the label.

Enable Autosense Mode

The scanner will respond by emitting a continuous, low level, red beam of light.

Note: The scanner is automatically configured to use full power (not standby power) in Autosense mode.

For details on how to set up the scanner to operate in the optional Autostand, see Appendix C.

T o deactivate Autosense mode, scan the Disable

Autosense symbol (NN). You must hold the trigger down for two seconds after scanning the label.

Disable Autosense Mode *

Note: Spotter Beam and Autosense Mode are mutually exclusive parameters. Only one of these parameters can be enabled at a time.

5–7

Chapter 5

General Setup Parameters

ternal Trigger

Operation

External trigger operation enables an external device to control scanning. External trigger is controlled by applying an external trigger signal to the CTS input (refer to Appendix D) with external triggering enabled. When active, this signal causes scanning to begin just as if the scanner’s trigger were pressed. Scanning continues until a label is decoded or the external signal is deactivated.

Note: CTS protocol cannot be used when external triggering is enabled.

When a decode occurs, the trigger signal must be deactivated for a minimum of 50 milliseconds before another scan can be attempted (tying the trigger signal active does not cause continuous scanning and decoding).

When External Trigger (+) is scanned, scanning begins when a low level input is applied to the CTS input. Conversely, when External Trigger (–) is scanned, scanning begins when a high level is applied to CTS. When CTS is not connected, it is treated as if a low level is applied.

HA Disable External Trigger *

5–8

HF External Trigger (–)

External Trigger (+)

Chapter

A–B

Serial Communication Parameters

Chapter Objectives

This chapter covers parameters that control serial communications between the scanner and the host device including:

• Baud Rate

• Data Transmission Parameters

• Intercharacter Delay

• Protocol

• Serial Transmit Buffer

Serial communication parameters are selected by scanning appropriate bar code labels in each section.

Note: Throughout this chapter, default settings for parameters are flagged by an asterisk (*).

6–1

Chapter 6

Serial Communication Parameters

aud Rate

The serial communication baud rate selections are listed below. Your scanner and the serial host computer must be set at the same baud rate. Scan the appropriate rate.

DA 300 Baud

DB 600 Baud

DC 1200 Baud

DD 2400 Baud

6–2

DE 4800 Baud

DF 9600 Baud *

DG 19200 Baud

Chapter 6

Serial Communication Parameters

Serial Data Transmission Parameters

Serial transmission data consists of three or four different elements depending on the host system requirements. These elements are:

• Start Bit

• Data Bits (7 or 8)

• Optional Parity Bits

• Stop Bits (1 or 2)

In this manual, these elements are represented graphically in the following manner:

Start Bit

7 Bits

Word Bits

or 8 Bits

Stop Bits

The Parity bit is used for error detection (e.g., data altered in transmission), but is not required by all systems. A parity bit, if required will be in one of the following four formats:

Odd

Even

Mark Space O

6–3

Chapter 6

Serial Communication Parameters

7 Data Bits, 1 Stop Bit, Parity Check

If your system requires a word length of 7 Data bits, a single Stop bit, and Parity check, scan the appropriate label below.

7 Bits

6–4

EA *

7 Bits

Chapter 6

Serial Communication Parameters

7 Data Bits, 2 Stop Bits, Parity Check

If your system requires a word length of 7 Data bits, 2 Stop bits, and Parity check, scan the appropriate label below.

7 Bits

8 Data Bits, 1 Stop Bit, No Parity Check

If your system requires a word length of 8 Data bits, 1 Stop bit, and no Parity check, scan the label below.

8 Bits

6–5

Chapter 6

Serial Communication Parameters

8 Data Bits, 1 Stop Bit, Parity Check

If your system requires a word length of 8 Data bits, 1 Stop bit, and Parity check, scan the appropriate label below.

8 Bits

6–6

8 Bits

8 Data Bits and 2 Stop Bits

If your system requires a word length of 8 Data bits and 2 Stop bits, scan the label below. Parity check is not possible with this combination of data bits and stop bits.

8 Bits

Chapter 6

Serial Communication Parameters

rotocol

Protocol controls data flow between your scanner and the serial host computer. The protocol options are: None, XON/XOFF, CTS, RTS.

XON/XOFF

When selecting XON/XOFF protocol, the scanner recognizes the ASCII XON/XOFF characters. The host may then stop transmission with XOFF and resume with XON.

Controlled data flow is achieved between devices when the receiving device sends ASCII XON/XOFF codes to the transmitting device. When the receiving device is unable to accept data, it sends an XOFF code to inform the host to temporarily suspend data transmission. When the receiving device catches up, it sends an XON code to inform the host that it is again ready to accept data.

XON/XOFF protocol does not require additional hardware for implementation; only transmit, receive, and signal ground are required.

CTS Protocol

Like XON/XOFF protocol, CTS protocol is a mechanism used to control data flow out. The CTS input is used to inform the scanner that the host terminal is ready to accept scanned data.

When CTS (+) protocol is selected, the scanner waits for a high level on its CTS input before transmitting data.

When CTS(–) is selected, the signal polarities are reversed and a low level indicates data may be transmitted. The CTS protocol may be programmed independently of the RTS protocol, however the signal polarities must be the same. You may not select CTS(+) and RTS(–).

Note: CTS protocol cannot be used if external triggering is enabled. See page 5–8 for details.

6–7

Chapter 6

Serial Communication Parameters

RTS Protocol

The RTS output from the scanner may be programmed to operate in one of three different modes.

1. In the default mode, RTS signals when the scanner is ready to receive commands or data.

2. RTS is in a fixed state.

3. RTS signals when the scanner has data to transmit.

The RTS modes are independent of the CTS protocol. However, you must select the same active state for RTS as for CTS. You may not select CTS(–) and RTS fixed high. If CTS(–) is selected, then the active state for RTS will be low.

Scan the appropriate protocol option.

CTS Protocol=None *

RTS high indicates scanner ready to receive data

6–8

HB Protocol=XON/XOFF

Protocol=CTS(+)

HD Protocol=CTS(–)

Chapter 6

Serial Communication Parameters

RTS always high

HH RTS always low

RTS high indicates scanner has data to transmit

RTS low indicates scanner has data to transmit

RTS low indicates scanner ready to to receive data

6–9

Chapter 6

Serial Communication Parameters

ntercharacter

Delay

Certain terminals and computers require an intercharacter delay to simulate the effects of keystroke delays. Selecting an intercharacter delay causes the characters to be sent at the slower rate required by the device to which you are interfacing.

Scanning label GA disables intercharacter delay .

T o set Intercharacter Delay to a value other than zero, scan label GB, then two separate digits from Appendix B. The intercharacter delay cannot

exceed 31 milliseconds.

For example, to set the delay to 15 milliseconds, scan the GB label, then scan codes 1 and 5 in Appendix B.

Intercharacter Delay=xx msec

No Intercharacter Delay *

6–10

Chapter 6

Serial Communication Parameters

Serial Transmit Buffer

The scanner supports three levels of serial buffering: Full Buffering, No Buffering, One Label Buffering.

Full Buffering

With Full Buffering (the default) selected, the scanner will place all scanned labels into a 64 byte serial transmit buffer if the host is unavailable to receive data. This allows you to continue scanning even though the previous label may not have been transmitted yet. Scanning will continue normally until the buffer is full, then scanning will stop. Scanning will continue when enough space is available for the current message.

Note: The buffer holds other message parameters, so you must consider the total message length (including label) to determine how many labels can be buffered. See Chapter 7, Message Format Parameters.

No Buffering

When No Buffering is selected, scanning is stopped until the current label is completely transmitted.

One Label Buffering

When One Label Buffering is selected, the scanner will allow you to scan one more label in addition to the label already in the transmit buffer.

Full Buffering *

NF No Buffering

One Label Buffering

6–11

Chapter

Message Format Parameters

A–B

Chapter Objectives

Messa Format

Prefix Scanner Identifier Code Identifier Data Postamble SuffixPreamble

This chapter defines parameters that control the format of transmitted bar code messages including:

• Prefix and Suffix

• Scanner Identifier

• Code Identifier

• Preamble and Postamble

A message transmitted from the scanner upon a successful decode has the following format:

Some of these message parameters may not be required or may vary from one host system to another. You select parameters based on the requirements of your application and the host system.

T o select message parameters, you scan the appropriate bar code labels in each section.

Note: Throughout this chapter, default settings for parameters are flagged by an * (asterisk).

7–1

Chapter 7

Prefix

Message Format Parameters

A prefix is a subset of the preamble normally formatted to some industry standard. It is represented by a specific ASCII code. An example of a prefix is the STX (Start of Transmission) code.

Scan the appropriate prefix label.

Prefix=None *

IB Prefix=STX

IC Prefix=SOH

7–2

Chapter 7

Message Format Parameters

Suffi

A suffix is a subset of the postamble. Like the prefix, it is normally assigned to a specific ASCII code. Examples of suffixes are CR (Carriage Return) and LF (Line Feed).

Scan the suffix appropriate for your application.

Suffix=None

MB Suffix=ETX

Suffix=CR

Suffix=LF

ME Suffix=HT

MF Suffix=CR and LF *

7–3

Chapter 7

Message Format Parameters

Scanner Identifier

Scanner ID characters are used to identify individual scanners when more than one scanner is interfaced with the host system. Options available are none (Disabled) or digits 01 through 99.

Scanning label JA disables the scanner identifier.

Disable Scanner Identifier *

T o enter a scanner ID, scan label JB and then two separate digits from Appendix B. The ID character cannot exceed 99.

Enable Scanner Identifier

plus two characters

For example, to enter a scanner ID of 01, scan the JB label, then scan codes 0 and 1 in Appendix B.

7–4

Chapter 7

Message Format Parameters

Code Identifier

A single-character code identifier may optionally be transmitted with a message. This option allows the host computer to identify the type of bar code scanned, as well as the encoded information.

Scan option FA to disable the code identifier.

Disable Code Identifier *

Scan option FB to enable the code identifier.

Enable Code Identifier

T able 7.A shows the code identifier character assignments.

Table 7.A Code Identifier Characters

Symbology

Code 39 a Interleaved 2 of 5 b Standard 2 of 5 c UPC/EAN/JAN d Code 128 f Codabar h

Code Identifier

7–5

Chapter 7

Message Format Parameters

reamble

or Postamble

Preambles and postambles consist of up to four ASCII characters. Each ASCII character is encoded as two hexadecimal characters. Use T able 7.B, Hexadecimal Conversion Table, to look up the hexadecimal equivalent.

T o use the conversion table:

1. Find each ASCII character in the table and locate

the corresponding bold hexadecimal equivalent character in the top row and the left column of the table. For example, the ASCII character ”Q” is represented by the hexadecimal numbers 5 (top) and 1 (left).

2. Scan the bar code symbols that correspond to the

hexadecimal equivalent characters. First scan the bar code symbol that corresponds to the bold hex character at the top. Then scan the bar code symbol that corresponds to the bold hex character at the left.

For example, for the ASCII character ”Q”, first scan the bar code symbol labeled 5, then scan the bar code symbol labeled 1. If your preamble or postamble contains an ”N”, first scan 4 and then E.

3. Repeat this procedure for each ASCII character

you want to enter.

7–6

Note: If you select a preamble or postamble you must scan four ASCII characters, even if the preamble or postamble is less than four characters in length. Do this by scanning null (NUL) characters for the additional characters.

For example, if your preamble is ”AB” (in ASCII code), enter A, B, and two null characters by scanning the hexadecimal characters 4,1 4,2 0,0 0,0. Because each ASCII character is represented by two hexadecimal characters, you need eight

scans.

Chapter 7

Message Format Parameters

reamble

ostamble

A preamble is a string of characters that prefixes a message that is transmitted to the host. The preamble may be used to identify the scanner that sent the message. The maximum preamble length is four ASCII characters.

T o enter a preamble, scan the KB label, then refer to T able 7.B to enter the four ASCII characters. The procedure on the previous page explains how to enter preamble characters.

Preamble = 4 ASCII (8 Hex) characters

A postamble is similar to a preamble, except it is appended to the message which is transmitted to the host. Its maximum length is four ASCII characters.

Preamble=None*

T o enter a postamble, scan the LB label, then refer to T able 7.B to enter the four ASCII characters. The procedure on the previous page explains how to enter preamble characters.

Postamble = 4 ASCII (8 Hex) characters

Postamble=None *

7–7

Chapter 7

Message Format Parameters

Table 7.B Hexadecimal Conversion Table

0 1 2 3

0 NUL DLE SP 0 1 SOH DC1 ! 1 2 STX DC2 ” 2 3 ETX DC3 # 3 4 EOT DC4 $ 4 5 ENQ NAK % 5 6 ACK SYN & 6 7 BEL ETB ’ 7 8 BS CAN ( 8

9 HT EM ) 9 A LF SUB * : B VT ESC + ; C FF FS , < D CR GS – = E SO RS . >

F SI US / ?

7–8

Table 7.B (continued) Hexadecimal Conversion Table

4 5 6 7

0 @ P ‘ p 1 A Q a q 2 B R b r 3 C S c s 4 D T d t 5 E U e u 6 F V f v 7 G W g w 8 H X h x

9 I Y i y A J Z j z B K [ k { C L \ l | D M ] m }

E N ^ n ~ F O _ o DEL

Chapter 7

Message Format Parameters

7–9

Chapter 7

No R

Message Format Parameters

ead Message

When the scanner is triggered, the scan beam is active until:

1. a label is decoded

2. the trigger is released

3. the scan beam timeout period has elapsed If the No Read Message is enabled, case 2 and 3 will

cause the scanner to substitute NR (No Read) for the bar code data in the host message.

Bar code data ”12345” transmitted in host message

Prefix Scanner Identifier Code Identifier 12345 Postamble SuffixPreamble

NR substituted for bar code data in host message

Prefix Scanner Identifier Code Identifier NR Postamble SuffixPreamble

The No Read Message is disabled as the default state. Scan label NY to enable the No Read Message.

No Read Message disabled

No Read Message enabled

7–10

Enable No Read Message

Scan label NX to disable the No Read Message.

Disable No Read Message*

Symbologies

Chapter

A–B

Chapter Objectives

abel Lengths

This chapter shows how to enable bar code symbologies the scanner is capable of reading including:

• Code 39

• UPC-A and UPC-E

(with optional 2 or 5-digit supplements)

• EAN-8 and EAN-13

(with optional 2 or 5-digit supplements)

• Interleaved 2 of 5

• Standard 2 of 5

• Code 128

• Codabar

T o disable or enable specific bar code symbologies, scan the appropriate bar code labels in each section.

Note: We recommend that you disable all symbologies not used by your application.

Throughout this chapter, the default symbology selections are flagged by an asterisk (*).

The minimum label lengths are set to 1 character, except for Interleaved 2 of 5 which is set to 2 characters and Standard 2 of 5 which is set to 4 characters. The maximum label length for all symbologies is set to 32 characters. You can set minimum and maximum label lengths.

Note: The minimum length must be less than or equal to the maximum length for scanning to occur.

8–1

Chapter 8

Symbologies

Code 39

T o disable Code 39, scan label OA .

Disable Code 39

T o enable Code 39, scan option OB or OC. After enabling Code 39, make any additional required selections from options OD through OI.

OB Enable Standard Code 39 *

OC Enable Full ASCII Code 39

8–2

Chapter 8

Symbologies

Modulo 43 Check Character

Options OD and OE allow you to enable or disable the Modulo 43 check character for Code 39. T o enable the Modulo 43 check character, scan label OE. To disable the Modulo 43 check character, scan label OD.

Disable Modulo 43 * Check Character

Enable Modulo 43 Check Character

Transmit Start/Stop Characters

You can transmit or suppress the Start and Stop characters in Code 39. T o suppress transmission of the Start and Stop characters, scan label OF.

Do Not Transmit * Start and Stop

T o enable transmission of the Start and Stop characters, scan label OG.

Transmit Start and Stop

8–3

Chapter 8

Symbologies

Code 39

(continued)

Minimum Length

The minimum length of Code 39 is set by scanning label OH and then two digits (01 - 32) in Appendix B.

Minimum Length

(Specified by two digits 01-32)

For example, to enter a minimum length of 05, scan the OH label, then scan codes 0 and 5 in Appendix B.

Maximum Length

The maximum length of Code 39 is set by scanning label OI and then two digits (01 - 32) in Appendix B.

Maximum Length

(Specified by two digits 01-32)

8–4

For example, to enter a maximum length of 05, scan the OI label, then scan codes 0 and 5 in Appendix B.

If the minimum and maximum lengths are set equal, only codes of that exact length are read.

Chapter 8

Symbologies

UPC (A and

T o disable all UPC labels, scan label QA .

Disable UPC (A and E)

Supplements

Option QB or option QC enable both UPC-A and UPC-E. T o enable scanning of UPC labels with the 2 or 5 Digit supplements, scan label QB.

Enable UPC

with 2 or 5 Digit Supplement Enabled

T o enable scanning of UPC labels with the 2 or 5 Digit supplements disabled, scan label QC.

Enable UPC * with 2 or 5 Digit Supplement Disabled

Expanded UPC-E

You can enable/disable expansion of E labels to A labels. T o disable expanded UPC-E, scan label QH .

Disable * Expanded UPC-E

T o enable expansion of E labels to A labels, scan label QI.

Enable Expanded UPC-E

8–5

Chapter 8

Symbologies

UPC (A and

(continued)

Transmit Number System Digit

You can enable or disable the transmission of the first character in a UPC symbol (the number system character). T o disable transmission of the first character in a UPC symbol, scan label QD.

Disable Transmission Number System Digit

T o enable transmission of the first character in a UPC symbol (the number system character), scan label QE.

Enable Transmission * Number System Digit

Transmit Check Digit

You can enable or disable the transmission of the last character in a UPC symbol (the check digit). T o disable transmission of the check digit in a UPC symbol, scan label QF.

8–6

Disable Transmission of Check Digit

T o enable transmission of the check digit in a UPC symbol, scan label QG.

Enable Transmission of Check Digit *

Chapter 8

Symbologies

UPC to EAN Translation

You can cause UPC labels to be transmitted as EAN-13 labels. T o enable UPC to EAN translation, scan label QJ.

Enable UPC to EAN Translation

T o disable UPC to EAN translation, scan label QK.

Disable UPC to EAN Translation *

8–7

Chapter 8

EAN/JAN

Symbologies

Scan label RA to disable EAN/JAN (8 or 13 digit).

Disable EAN/JAN * (8 or 13 digit)

Supplements

Option RB or option RC enables both EAN 8-digit and EAN 13-digit. EAN/JAN labels can be read with or without supplements. T o enable scanning of EAN/JAN labels with the 2 or 5 digit supplements, scan label RB.

Enable EAN/JAN

with 2 or 5 Digit Supplement Enabled

T o enable scanning of EAN/JAN labels with the 2 or 5 Digit supplements disabled, scan label RC.

Enable EAN/JAN

with 2 or 5 Digit Supplement Disabled

8–8

Chapter 8

Symbologies

Transmit Number System Digit

You can enable or disable the transmission of the first character in an EAN/JAN symbol (the number system character). T o disable transmission of the first character in an EAN/JAN symbol, scan label RD.

Disable Transmission Number System Digit

T o enable transmission of the first character in an EAN/JAN symbol, scan label RE.

Enable Transmission * Number System Digit

Transmit Check Digit

You can enable or disable the transmission of the last character in an EAN/JAN symbol (the check digit). T o disable transmission of the check digit in an EAN/JAN symbol, scan label RF.

Disable Transmission of Check Digit

T o enable transmission of the check digit in an EAN/JAN symbol, scan label RG.

Enable Transmission of Check Digit *

8–9

Chapter 8

Symbologies

nterleaved 2 of 5

Scan label PA to disable Interleaved 2 of 5.

Disable Interleaved 2 of 5 *

Check Digit

You can enable Interleaved 2 of 5 with or without the check digit. T o enable Interleaved 2 of 5 without the check digit, scan label PB.

Enable Interleaved 2 of 5 without Check Digit

T o enable Interleaved 2 of 5 with the check digit, scan label PC.

Enable Interleaved 2 of 5 with Check Digit

8–10

Chapter 8

Symbologies

Minimum Length

T o set a minimum length (other than two) for Interleaved 2 of 5, scan label PD and then two digits (02-32) in Appendix B. The value of the number

you scan must be even. Odd numers are ignored.

Minimum Length

(Specified by two digits 02-32)

For example, to enter a minimum length of 12, scan the PD label, then scan codes 1 and 2 in Appendix B.

Maximum Length

T o set a maximum length for Interleaved 2 of 5, scan label PE and then two digits (02-32) in Appendix B.

The value of the number you scan must be even.

Maximum Length

(Specified by two digits 02-32)

For example, to enter a maximum length of 12, scan the PE label, then scan codes 1 and 2 in Appendix B.

If the minimum and maximum lengths are set equal, only codes of that exact length are read.

8–11

Chapter 8

Symbologies

Standard 2 of 5

Scan label PF to disable Standard Code 2 of 5.

Disable * Standard 2 of 5

T o enable Standard Code 2 of 5, scan label PG.

Enable Standard 2 of 5

Minimum Length

T o set a minimum length (other than 4) for Standard Code 2 of 5, scan label PH and then two digits (04-32) in Appendix B.

Minimum Length

(Specified by two digits 04–32)

8–12

Maximum Length

T o set a maximum length for Standard Code 2 of 5, scan label PI and then two digits (04-32) in Appendix B.

Maximum Length

(Specified by two digits 04–32)

If the minimum and maximum lengths are set equal, only codes of that exact length are read.

Chapter 8

Symbologies

Code 128

Scan label TA to disable Code 128.

TA Disable Code 128

Scan option TB to enable Code 128.

TB Enable Code 128 *

Minimum Length

T o set a minimum length for Code 128, scan label TC, then two digits (01-32) in Appendix B.

Minimum Length

(Specified by two digits 01-32)

Maximum Length

T o set a maximum length for Code 128, scan TD, then two digits (01-32) in Appendix B.

Maximum Length

(Specified by two digits 01-32)

If the minimum and maximum lengths are set equal, only codes of that exact length are read.

8–13

Chapter 8

Symbologies

Codabar

Scan label VA to disable Codabar.

Disable Codabar *

Scan option VB to enable Codabar.

Enable Codabar

Transmit Start/Stop Characters

You can enable or disable the transmission of the Start and Stop characters in Codabar. To disable transmission of the Start and Stop characters, scan label VC.

Disable Transmission * Start/Stop Characters

8–14

T o enable transmission of the Start and Stop characters, scan label VD.

Enable Transmission Start/Stop Characters

Chapter 8

Symbologies

Minimum Length

T o set a minimum length for Codabar, scan label VE and then two digits (01-32) in Appendix B.

Minimum Length

(Specified by two digits 01-32)

For example, to enter a minimum length of 05, scan the VE label, then scan codes 0 and 5 in Appendix B.

Maximum Length

T o set a maximum length for Codabar messages, scan label VF, and then two digits (01-32) in Appendix B.

Maximum Length

(Specified by two digits 01-32)

For example, to enter a minimum length of 05, scan the VF label, then scan codes 0 and 5 in Appendix B.

If the minimum and maximum lengths are set equal, only codes of that exact length are read.

8–15

Chapter

Serial Commands

A–B

Chapter Objectives

Serial Command Format

This chapter covers serial commands that can be sent from the host to configure the scanner including:

• Serial Command Format

• Manual Scanning Interaction

• ACK/NAK Protocol

• Power Standby and Serial Commands

• Communication Parameter Changes

The format of serial commands is as follows:

STX ESC LT1 LT2 <optional parameters> ETX Note: STX= Ctrl-B ETX= Ctrl-C

STX, ESC, and ETX are ASCII codes whose values are 02H, 1BH, and 03H, respectively.

LT1 and LT2 are uppercase ASCII letters that represent a serial command. LT1 is the first letter of the command; LT2 is the second letter of the command. Each bar code label in this manual is preceded by a two character serial command.

The ESC code that follows the STX code identifies this as a command.

Some commands require parameters such as minimum and maximum code lengths, and strings of hexadecimal characters. When parameters are required by the command they immediately follow LT2. Serial commands never contain spaces.

T able 9.A shows some serial programming command examples and the corresponding functions. For a complete list of serial commands, see Appendix F.

9–1

Chapter 9

Serial Commands

Table 9.A Serial Programming Command Examples

Command

STX ESC PC ETX Enable Interleaved 2 of 5 with check digit. STX ESC PD12 ETX Set Interleaved 2 of 5 minimum length to 12. STX ESC PE14 ETX Set Interleaved 2 of 5 maximum length to 14.

STX ESC KB31323334 ETX STX ESC LB6162364 ETX

Each ASCII character is encoded as two hexadecimal characters. For example:

1=31, 2=32, 3=33, 4=34 and a=61, b=62, c=63, d=64.

Manual Scanning Interaction

The scanner firmware makes no attempt to resolve conflicts between serial programming commands and manually scanned menu labels. If you plan to scan

Set Preamble to ’1234’.

Set Postamble to ’abcd’.

Function

menu labels, do not attempt serial programming, and vice versa.

Serial commands are given priority over pending menu labels. For example, if you scan the menu label PD (which sets a minimum length for Interleaved 2 of 5 labels) and the scanner is waiting for a two-digit minimum length code when a serial command is issued, the serial command is acted upon and the pending manual command (PD – Set Interleaved 2 of 5 Minimum Length) is ignored.

9–2

ACK/NAK

Protocol

Chapter 9

Serial Commands

The scanner provides ACK/NAK protocol during serial programming to provide feedback to the host computer which is programming the scanner.

ACK/NAK protocol provides two functions.

• It provides the host with positive acknowledge-

ment that its commands are being accepted and acted upon.

• It ensures the host will not issue commands to the

scanner faster than the scanner can process them.

For example, every time the scanner receives a correct command, it modifies its internal EEPROM, a function that takes about one second. At 9600 baud, the host can easily issue commands to the scanner faster than they can be processed.

If, after issuing each command, the host waits to receive an ACK or NAK code before issuing the next command the scanner cannot be overrun.

If XON/XOFF or CTS/RTS protocol is being used, the scanner cannot be overrun by programming commands. However, the host is not provided with feedback as to the outcome of its commands.

The ACK/NAK Protocol is quite simple. Whenever the scanner receives a correctly formatted command, it sends a confirmation message followed by an ACK (06H) code. The following example shows the command and response for the BEEPER OFF command.

Command from Host:

STX ESC AA ETX

Response from Scanner:

BEEPER OFF CR–LF ACK

If the scanner receives an unknown command or improperly formatted command, or if the required parameters are missing or out-of-range, it sends a NAK (15H) code.

9–3

Chapter 9

Serial Commands

ower Standb and Serial Commands

Communication Parameter Changes

When the scanner is programmed for standby power operation (@B), the first character of the command is used to wake-up the scanner; it will not be recognized by the scanner’s CPU. When there is any possibility that the scanner is in standby mode, an extra space code should be transmitted before STX to ensure the scanner is awake before sending commands to it.

If you are not operating the scanner in standby mode, the space has no effect on commands (space prefixed commands are properly decoded).

Having sent the space code to wake-up the scanner, a 150 to 200 millisecond pause must be observed to allow the scanner’s CPU to complete its initialization tasks, during which time it is unable to accept serial commands before issuing the programming command. Failure to observe this delay causes the scanner to ignore the incoming command.

All commands which affect serial communication are acted upon immediately. When changing communication parameters (such as baud rate, word length, parity), the scanner will send the ACK code, using the newly implemented communication parameters.

9–4

There should be a delay after the host sends a communication parameter setup command. This delay allows the host computer to modify its internal parameters and correctly receive the ACK code from the scanner. This is due to the internal, one second delay required for the scanner to update its internal EEPROM.

Chapter

Specifications

A–B

Hand-Held Scanners

Catalog No. 2755-G3-D Catalog No. 2755-G6-D

Optical

Nominal Scan Rate 35 scans/second Wavelength (nominal) 670 nm Maximum Pitch ±55 degrees Maximum Skew ±65 degrees Scanning Range

Minimum

Bar Width

6.0 mil

(.15 mm)

7.5 mil

(.19 mm)

10.0 mil

(.25 mm)

15.0 mil

(.38 mm)

20.0 mil

(.51 mm)

40.0 mil

(1.02 mm)

55.0 mil

(1.40 mm)

Standard Range

(2755-G3-D)

3.0 in - 5.0 in

7.6 cm - 12.7 cm

2.5 in - 7.5 in

6.4 cm - 19.0 cm

1.0 in - 10.0 in

2.5 cm - 25.4 cm

1.5 in - 14.0 in

3.8 cm - 35.6 cm

2.5 in - 18.0 in

6.4 cm - 45.7 cm

9.0 in - 25.0 in

22.9 cm - 63.5 cm

12.0 in - 30.0 in

30.5 cm - 76.2 cm

Long Range

(2755-G6-D)

N.A.

8.0 in - 22 in

20.3 cm - 55.9 cm 12 in - 36 in

30.5 cm - 91.4 cm 23 in - 60 in

58.4 cm - 152.4 cm 23 in - 66 in

58.4 cm - 167.6 cm

Scanning Range

Autosense Mode 36 in (91.4 cm) maximum

(to reflective label or tape)

Electrical

Supply Voltage 4.75 to 14 VDC Current Consumption

While Scanning 200 mA maximum Standby Power 100 A maximum Continuous Full Power 200 mA maximum

Autosense mode automatically uses continuous full power.

10–1

Chapter 10

Specifications

Mechanical

Dimensions

Inches 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 Indicators

Good Read Green

Scanning Yellow

Environmental

Operating T emperature 0° to 122° F

-18° to

+50° C

Storage T emperature -40° to 158° F

-40° to +70° C

Relative Humidity 5 to 95% (noncondensing) Electrostatic Discharge 15kv to any

external surface

Drop T est 5 feet (1.27 meter)

on concrete

Dust and Rain MIL STD 810D

Sections 510.2I & 506.2II

10–2

Interface

RS-232

Certification

Dept. of Health and Class II laser product. Human Services (DHHS) Complies with DHHS

radiation performance standards, 21 DFR subchapter J.

Appendix

A–B

Bar Code Test Symbols

Use the following labels to insure that your scanner is functioning properly. The only label the long range scanner can read below is the Interleaved 2-of-5 (15 mil) label.

A–1

Appendix

Digit Selection Symbols

A–B

B–1

Appendix

A–B

Autosense Mode

T o set up the scanner to operate in Autosense mode using the optional Autostand follow the steps below while referring to Figure C.1.

1. Enable the scanner to operate in Autosense mode

by scanning the Enable Autosense (NO) label in Chapter 5.

2. Attach the Stand Riser to the Stand Base using two of the supplied #6-32 thumb screws.

. Attach the Scanner Holder to the top of the Stand

Riser using the other two #6-32 thumb screws.

4. Verify that the reflective label is affixed to the Stand Base.

5. Place the scanner in the stand as shown in Figure C.1.

6. Check that the red beam of light is aimed at the reflective label on the stand.

The Autostand is now ready to read bar code labels presented to it.

While the scanner is activated in Autosense mode you are able to remove the scanner from its holder and use it for hand-held applications. When the scanner is removed from the Autostand the scanning beam is turned on automatically to read a bar code label. If the scanner does not see a label the scanning beam will turn off after four seconds. Scanning is re-initiated by manually pulling the trigger. The scanner can then be placed into the stand once again and it will function in Autosense mode.

C–1

Appendix C

Autosense Mode

#6-32 Thumb Screws

Figure C.1 Autostand

Scanner

Scanner Holder

C–2

Stand Riser

#6-32 Thumb Screws

Stand Base

Important: When the scanner is to be powered from a battery such as in a hand-held terminal, you should disable Autosense mode. In this application, you may need to use the power conservation mode (see page 5–3) of the scanner when drawing power from a battery . Autosense mode will function only in full power mode.

Reflective tape is supplied with the autostand. Additional reflective tape is

available by ordering Catalog No. 2755-NT1.

Reflective

Label

Appendix

A–B

Interface Cable Pinouts

The Catalog No. 2755-NCR1 Cable is typically used to connect the scanner to IBM PC Compatible computers. You may have to use an adapter if your computer has a 9-pin port.

Table D.1 RS232 DCE, 25-Pin, Female, D-Type Connector Catalog No. 2755-NCR1

2 RxD Serial data receive input. 3 TxD Serial data transmit output. 4 CTS

5 RTS Request-To-Send

7 Ground Ground pin and reference for both output signals. External trigger operation is controlled by applying an external signal to the

CTS input (with external triggering enabled). CTS protocol and External Trigger Enabled are mutually exclusive parameters. See Chapter 5 for details on how to enable the scanner for external trigger operation.

Signal Name Function

Clear-To-Send (or External Trigger) Handshaking input line.

Handshaking output line.

D–1

Appendix D

Interface Cable Pinouts

The Catalog No. 2755-NCR2 cable is compatible with the AUX port on the Single and Dual-Head Enhanced Bar Code Decoders (Catalog No. 2755-DS1A, -DD1A).

Table D.2 RS232 DTE, 25-Pin, Male, D-Type Connector Catalog No. 2755-NCR2

Signal Name Function

2 TxD Serial data transmit output. 3 RxD Serial data receive input. 4

RTS

CTS

Request-To-Send Handshaking output line

Clear-To-Send (or External Trigger) Handshaking input line

7 Ground Ground pin and reference for both output signals. External trigger operation is controlled by applying an external signal to the

CTS input (with external triggering enabled). CTS Protocol and External Trigger Enabled are mutually exclusive parameters. See Chapter 5 for details on how to enable the scanner for external trigger operation.

D–2

Appendix

Maintenance

This appendix provides general maintenance information for your scanner.

A–B

Cleanin Window

nspectin

Cables

You may need to clean the window of the scanner. Carefully clean the window by first removing loose particles of dirt with clean air. Then use an optical

quality cloth moistened with an optical quality cleaning fluid for plastic lenses and wipe the window

in a single direction (don’t wipe cloth back and forth across window). Do not leave streaks.

CAUTION:

Do not use abrasive materials (e.g., dis-

posable wipes, facial tissue) or solvents (e.g., alcohol or acetone) on the window. These items may damage the window or finish on the scanner.

WARNING:

The scanner has no serviceable parts.

Do not open the housing of the scanner.

Periodically inspect the cable on the scanner for wear and other signs of damage. A worn or damaged cable may interfere with the operation of the scanner. Contact your Allen-Bradley representative to order replacement cables.

E–1

Appendix

Scanner Commands

Each label in this manual is preceded by two characters which represent the serial command for a scanner parameter . The following tables list the command mnemonic for each scanner parameter and the page location of the corresponding label.

General Scanner Setup Parameters

Mnemonic

ZA Set Scanner to Factory Defaults 4-10 ZB Display Scanner Configuration 5-1 ZC Transmit Program Version Number 5-2

@C Transmit Program ID 5-2 @A Enable Full Continuous Power 5-3

@B Enable Standby Power 5-3

AA Beeper Off 5-4

AB Beeper On; Volume Low 5-4 AC Beeper On; Volume Medium 5-4 AD Beeper On; Volume Loud 5-4 BC Capture Count=1 5-5 BD Capture Count=2 5-5 NP Disable Spotter Beam 5-6 NQ Enable Spotter Beam 5-6 NO Enable Autosense Mode 5-7 NN Disable Autosense Mode 5-7 HA Disable External Trigger 5-8 HE External Trigger (+) 5-8

HF External Trigger (–) 5-8

Function Page #

A–B

F–1

Appendix F

Scanner Commands

Mnemonic

DA Baud Rate = 300 6-2 DB Baud Rate = 600 6-2 DC Baud Rate = 1200 6-2 DD Baud Rate = 2400 6-2 DE Baud Rate = 4800 6-2 DF Baud Rate = 9600 6-2 DG Baud Rate = 19200 6-2 EA 7 Data Bits, 1 Stop Bit, Space Parity 6-4 EB 7 Data Bits, 1 Stop Bit, Mark Parity 6-4 EC 7 Data Bits, 1 Stop Bit, Even Parity 6-4 ED 7 Data Bits, 1 Stop Bit, Odd Parity 6-4 EE 7 Data Bits, 2 Stop Bits, Space Parity 6-5

EF 7 Data Bits, 2 Stop Bits, Mark Parity 6-5 EG 7 Data Bits, 2 Stop Bits, Even Parity 6-5 EH 7 Data Bits, 2 Stop Bits, Odd Parity 6-5

EI 8 Data Bits, 1 Stop Bit, Space Parity 6-6

EJ 8 Data Bits, 1 Stop Bit, Mark Parity 6-6 EK 8 Data Bits, 1 Stop Bit, Even Parity 6-6

EL 8 Data Bits, 1 Stop Bit, Odd Parity 6-6 EM 8 Data Bits, 1 Stop Bit, No Parity 6-5 EN 8 Data Bits, 2 Stop Bits, No Parity 6-6

HA CTS Protocol = None 6-8 HB Protocol = XON/XOFF 6-8 HC Protocol = CTS(+) 6-8 HD Protocol = CTS(–) 6-8 HG RTS always high 6-9 HH RTS always low 6-9

HI RTS high means scanner has data to transmit 6-9

HJ RTS low means scanner has data to transmit 6-9 HK RTS low means scanner ready to receive data 6-9 GA No Intercharacter Delay 6-10 GB Set Intercharacter Delay 6-10 NE Serial Transmit Buffer = Full Buffering 6-11 NF Serial Transmit Buffer = No Buffering 6-11 NG Serial Transmit Buffer = One Label Buffering 6-11

Serial Communication Parameters

Function Page #

F–2

Appendix F

Scanner Commands

Message Format Parameters

Mnemonic

IA Prefix = None 7-2 IB Prefix = STX 7-2 IC Prefix = SOH 7-2

MA Suffix=None 7-3 MB Suffix = ETX 7-3 MC Suffix = CR 7-3 MD Suffix = LF 7-3 ME Suffix = HT 7-3 MF Suffix = CR and LF 7-3

JA Disable Scanner Identifier 7-4 JB Enable Scanner Identifier 7-4

FA Disable Code Identifier 7-5 FB Enable Code Identifier 7-5 KA Preamble = None 7-7 KB Preamble = 4 ASCII Characters 7-7

LA Postamble = None 7-7 LB Postamble = 4 ASCII Characters 7-7

Function Page #

Symbology Parameters

Mnemonic

OA Disable Code 39 8-2 OB Enable Standard Code 39 8-2 OC Enable Full ASCII Code 39 8-2 OD Disable Modulo 43 Check Character 8-3 OE Enable Modulo 43 Check Character 8-3 OF Do Not Transmit Code 39 Start/Stop Characters 8-3 OG Transmit Code 39 Start/Stop Characters 8-3 OH Set Minimum Length for Code 39 Labels 8-4

OI Set Maximum Length for Code 39 Labels 8-4 QA Disable UPC (A and E) 8-5 QB Enable UPC (A and E) with 2 or 5 Digit Supplements 8-5 QC Enable UPC (A and E) without 2 or 5 Digit Supplements 8-5

Function Page #

F–3

Appendix F

Scanner Commands

Mnemonic

QD Disable Transmission UPC Number System Digit 8-6 QE Enable Transmission UPC Number System Digit 8-6 QF Disable Transmission UPC Check Digit 8-6 QG Enable Transmission UPC Check Digit 8-6 QH Disable Expanded UPC-E 8-5

QI Enable Expanded UPC-E 8-5

QJ Enable UPC to EAN Translation 8-7 QK Disable UPC to EAN Translation 8-7 RA Disable EAN/JAN (8 or 13) 8-8 RB Enable EAN/JAN with 2 or 5 Digit Supplements 8-8 RC Disable EAN/JAN without 2 or 5 Digit Supplements 8-8 RD Disable Transmission EAN/JAN Number System Digit 8-9 RE Enable Transmission EAN/JAN Number System Digit 8-9 RF Disable Transmission EAN/JAN Check Digit 8-9 RG Enable Transmission EAN/JAN Check Digit 8-9

PA Disable Interleaved 2 of 5 8-10 PB Enable Interleaved 2 of 5 without Check Digit 8-10 PC Enable Interleaved 2 of 5 with Check Digit 8-10 PD Set Minimum Length for Interleaved 2 of 5 Labels 8-11 PE Set Maximum Length for Interleaved 2 of 5 Labels 8-11

PF Disable Standard 2 of 5 8-12 PG Enable Standard 2 of 5 8-12 PH Set Minimum Length for Standard 2 of 5 Labels 8-12

PI Set Maximum Length for Standard 2 of 5 Labels 8-12 TA Disable Code 128 8-13 TB Enable Code 128 8-13

TC Set Minimum Length for Code 128 Labels 8-13 TD Set Maximum Length for Code 128 Labels 8-13

VA Disable Codabar 8-14

VB Enable Codabar 8-14 VC Disable Transmission Codabar Start/Stop Characters 8-14 VD Enable Transmission Codabar Start/Stop Characters 8-14 VE Set Minimum Length for Codabar Labels 8-15

VF Set Maximum Length for Codabar Labels 8-15

Symbology Parameters (continued)

Function Page #

F–4

Glossary

A–B

ACK: See acknowledgement. acknowledgement (ACK): An ASCII control character

used to acknowledge the reception and acceptance of a transmission block.

AIM: Acronym for Automatic Identification Manufacturers.

alphanumeric: The character set containing letters, numbers, punctuation marks, and symbols.

ASCII: American Standard Code for Information Interchange. It is a seven-bit code with an optional parity bit used to represent alphanumerics, punctuation marks, and control codes.

bar: The dark element of a printed symbol. bar code: The parallel bars and spaces found in a bar

code symbol. bar code density: The number of characters which can be

represented in a linear inch. bar code label: A label that carries a bar code and is

suitable to be affixed to an article. bar code symbol: A group of parallel bars that represent

a character or group of characters whose spacing is determined by a specific set of rules. In most cases, human readable characters are printed below the bars.

bar length: The bar dimension perpendicular to the bar width.

bar width: The thickness of a bar measured from the edge closest to the symbol’s start character to the trailing edge of the same bar.

baud: A unit of signaling speed equal to the number of discrete conditions or signal events per second.

character: A single group of bars and spaces representing an individual number, letter or punctuation mark. A graphic shape representing a letter, number or symbol.

G–1

Glossary

check digit: A digit included within a symbol whose value is based mathematically on other characters included in the symbol. It is used to mathematically check the accuracy of a symbol.

clear area: A clear space, containing no dark marks, that precedes the start character of a symbol and follows the stop character.

Codabar: A numeric symbology consisting of 16 data characters and 4 start/stop characters. Codabar is primarily used by the medical community.

Code 128: A symbology representing the full 128 ASCII character set. Numeric data may be represented in a double density mode where two digits are represented by one character.

Code 39: An alphanumeric symbology recognized by most nations, widely used in the manufacturing industry.

code type: See symbology.

G–2

decode: The process of translating a bar code into data characters using a specific set of rules for each symbology.

decoder: A device used to decode, or make usable, a digital or analog signal transmitted from a scanning device. The scanner contains a decoder.

EAN: Acronym for European Article Numbering system, the international standard bar code for retail food packages.

element: Dimensionally the narrowest width in a character, bar or space.

encoded area: The total linear dimension consisting of all the characters of a code pattern, including start/stop characters and data.

guard bars: Bars at the ends and center of a UPC and EAN symbol. They ensure a complete scan of the bar code.

Glossary

hex: Abbreviated form of the word hexadecimal. See hexadecimal.

hexadecimal: A base-16 numbering system that uses the symbols 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F.

horizontal bar code: A bar code or symbol presented in a manner that its overall length dimension is parallel to the horizon. The bars look like a picket fence.

Interleaved 2 of 5: A symbology in which characters are paired together using bars to represent odd number characters and spaces to represent even number characters.

ladder orientation: See vertical bar code. modulus 43 check character: Used in Code 39 for data

security in addition to the built-in self-checking characters. The check-character is the modulus 43 sum of all of the character values in a given message and is the last character in the code.

NAK: See negative acknowledgement. negative acknowledgement (NAK): An ASCII control

character transmitted by a receiver as a negative response to the sender.

orientation: The alignment of bars and spaces to the scanner. Often referred to as vertical (ladder) or horizontal (picket fence).

parity bit: An additional non-data bit attached to a binary word to provide a check of the data integrity by making the sum of the number of ones in a word always even or odd.

picket fence code: See horizontal bar code. scan: The search for a symbol or marks which are to be

optically recognized. scan area: The area intended to contain a bar code

symbol. scanner: A device that optically scans bar code symbols

and converts the optical information into digital or analog form and sends it to a decoder.

G–3

Glossary

self-checking: A bar code or symbol using a checking algorithm which can be applied to each character to guard against undetected errors. Codes that are not self-checking may employ a check digit or other redundancy in addition to the data message.

space: The lighter element of a bar code formed by the background between bars.

start/stop characters: Bar code characters that provide the scanner with information on how the code is bounded and its orientation. The start character is normally at the left end of a horizontal code and adjacent to the most significant character . The stop character is normally at the end of a horizontal code and adjacent to the least significant character.

symbology: The conventions, or rules, which govern the formation of characters and strings in bar codes. The language of the bar code symbol.

symbol density: The number of characters per linear inch.

G–4

symbol length: The length of the symbol measured from the beginning of the quiet area adjacent to the start character to the end of the quiet area adjacent to a stop character.

UPC: Acronym for Universal Product Code. The standard bar code for retail food packages in the United States.

vertical bar code: A code pattern in which the overall coded area from start to stop is perpendicular to the horizon. The individual bars appear as rungs of a ladder.

Index

Accessories, 2–6 ACK/NAK Protocol,

serial programming, 9–3

Autosense Mode, 2–2

disable, 5–7 enable, 5–7 installing autostand, C–1

Bar Code T est Symbols, A–1 Baud Rate, 6–2 Beep, 3–7 Beeper Operation, 5–4

Cables, 2–6 Capture Count, 5–5 Codabar

disable, 8–14 enable, 8–14 maximum length, 8–15 minimum length, 8–15 start/stop characters, 8–14

Code 128

disable, 8–13 enable, 8–13 maximum length, 8–13 minimum length, 8–13

Standard 2 of 5, 8–12

maximum length, 8–12 minimum length, 8–12

Code 39

disable, 8–2 enable, 8–2 maximum length, 8–4 minimum length, 8–4 modulo 43 check character, 8–3

start/stop characters, 8–3 Code Identifier, 7–5 Configuration of Scanner

default settings, 4–7

guidelines, 4–5

serial programming, 9–1

viewing, 5–1 Continuous Full Power, 5–3, 10–1 CTS Protocol, 6–7

Data Bits, 6–3 Digit Selection Symbols, B–1 Display Scanner Configuration, 5–1

EAN/JAN

check digit, 8–9

disable, 8–8

enable with or without

supplements, 8–8

number system digit, 8–9 External Trigger Operation

applying external signal to CTS

input, 5–8, 6–7, D–1 disable, 5–8 enable, 5–8

I–1

Rockwell Automation 2755-G6-D User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Important User Information

Table of Contents

Chapter Objectives

Contents of Package

• Intended Audience

Overview of Manual

Chapter Objectives

• Function of Scanner

Setup Parameters

Serial Commands

Scanner Accessories

Chapter Objectives

• Physical Description

Chapter Objectives

• Connecting Scanner to Host

Installing Interface Cable

Removing Interface Cable

Installing Power Supply

Scanner Configuration Guidelines

Scanner Default Settings

Chapter Objectives

• System Status

Capture Count

Chapter Objectives

Serial Data Transmission Parameters

Serial Transmit Buffer

Chapter Objectives

Prefix

Scanner Identifier

Code Identifier

Chapter Objectives

Code 39

EAN/JAN

Standard 2 of 5

Code 128

Codabar

Chapter Objectives

Serial Command Format

Manual Scanning Interaction

Communication Parameter Changes

Glossary

Index