Microscan MS-3000 User Manual

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MS-3000

Single Head Decoder

User's Manual

P/N 83-003001 REV. H

MS-3000 Single Head Decoder User’s Manual

Information and specifications in this manual are subject to change w i t hou t no t ic e.

by Microscan Systems, Inc. , 1201 S.W. 7th Street, Renton, Washington, U.S.A. 98055 (425) 226-5700 FAX: (425) 226-8682

All rights reserved. The informatio n contained herein is pr oprietary and is provide d solely for the purpose of allowing cu stomers to ope rate and/or s ervice Micro scan manuf actured equi pment and is not to be released, reproduced, or used for any other purpose without written permission of Microscan.

Throughout this manual, trademarked names might be used. Rather than put a trademark (™) symbol in every occur rence of a trademarked name, we state here in that we are using the names only in an editorial fashion, and to the benefit of the trademark owner, with no intention of infringement.

Microscan Limited Warranty Statement and Exclusions

What is Covered?

Microscan Systems Inc. w arrants to the origina l purchaser that produc ts manufactured by it will be free from defects in material and workmanship und er normal use and service for a period of one year from the date of shipment. This warranty is specifically limited to, at Microscan’s sole option, repair or replacemen t with a funct ionally equiv alent unit and return without charge for service or return freight.

What is Excluded?

Any products or parts that have been subje ct to misuse, neglect, accident, unauthorize d repair, improper installation, or abnormal conditions or operations. Any products or parts that have been transferred by the ori ginal purchaser. Custom er mis-adjust ment of settings contrary to the procedure de scribed in the Microsca n owners manual. Up grading software versions at customer request unless required to meet specifications in effect at the time of purchase. Units returned and found to have no failure will be excluded. Claims for damage in transit are to be directed to the freight carrier upon receipt.

THIS EXPRESS WARRANTY EXCLUDES ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERC HANTABILITY AND FITNESS FOR PURPOSE. M ICROSCAN SYSTEMS INC. SHALL NOT BE LIABLE FOR ANY SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGE S, WHETHER IN CONTRACT, TORT, OR OTHERWISE.

Some states do not allow the exclusion or limitation of incidental or consequential damages or limitations on an implied warrant y, so the above lim itation or exclu sion may not app ly to you. This warranty gives you s pecific legal ri ghts, and you m ay also have other rights whic h may vary from state to state.

The buyer acknowledges that he/she is not relying on the seller’s skill or judgment to select or furnish goods suitable fo r any particul ar pu rpos e and t hat there ar e no w arr antie s tha t exten d beyond the description on the fa ce hereof.

Before Requesting Service…

Please check the owners manual for proper setup and cabling procedures and any customer settings for mis-adj ust ment for your particular appl ication. Correcting t hese may save you a service call.

To receive Warranty Service…

Contact your nearest Micro scan Service Center at the address shown bel ow for a Return Material Authorization (RM A) numb er be fore retu rning p roduc t. Re ceip t of an RM A numb er is not an admission of warranty status. All produc t must be returned freigh t prepaid to the location issuing the RMA number befo re the exp irat i on of the warranty period.

MS-3000 Single Head Decoder User’s Manual

iii

Table of Contents

List of Illustrations...................................................................................v

List of Tables..........................................................................................vi

About the MS-3000 Decoder.................................................................vi

About This Manual................................................... ..... .........................vi

Keystroke Entries..................................................................................vii

Approvals.............................................................................................. vii

Warning and Caution Summary............................................................ vii

Safety Labels........................................................................................viii

Chapter 1 Setup and Installation

Step 1 - Plan Scanning System...........................................................1-2

Step 2 - Attach Cabling........................................................................1-3

Step 3 - Configure Decoder...............................................................1-10

Step 4 - Position Scan Head and Label.............................................1-10

Step 5 - Do Read Rate Test...............................................................1-11

Step 6 - Install Decoder.....................................................................1-12

Ground and Shield Considerations....................................................1-14

Chapter 2 Menu Configuration

Communications Menu........................................................................2-5

Operations Menu...............................................................................2-13

Code Types Menu..............................................................................2-22

User Outputs Menu............................................................................2-29

Raster Setup Menu............................................................................2-33

Chapter 3 Serial Configuration

Summary of Serial Configuration Commands......................................3-2

Concatenating Serial Commands........................................................3-4

Serial Command Status Request.........................................................3-4

Loss of Communications......................................................................3-4

Trigger Filter Timing Value...................................................................3-5

Communications Commands...............................................................3-6

Operations Commands......................................................................3-10

Code Types Commands....................................................................3-12

User Outputs Commands..................................................................3-14

Raster Setup Commands...................................................................3-17

MS-3000 Single Head Decoder User’s Manual

Chapter 4 Profile Card Configuration

Summary of MS-3000 Modes.............................................................. 4-2

Operating Instructions......................................................................... 4-3

General Settings.................................................................................. 4-4

Communications Settings................................................. ...... ...... ....... 4-6

Operations Settings............................................................................. 4-8

Code Types Settings......................................................................... 4-11

User Outputs Settings.......................................................................4-11

Chapter 5 Operational Commands

Summary of Operational Commands..................................................5-2

Program Management Commands .....................................................5-3

Device Control Commands..................................................................5-3

Code Type Commands........................................................................5-4

Counter Commands ............................................................................5-4

Test Commands..................................................................... ............. 5-5

Status Commands...............................................................................5-5

Master Label Commands....................................................................5-5

Appendices

Appendix A — Decoder Specifications...............................................A-2

Appendix B — ASCII Table................................................................A-3

Appendix C — Defaulting the Decoder................................................A-4

Appendix D — Troubleshooting...........................................................A-6

Appendix E — Interfacing with the MS-90 Scan Head.......................A-9

Appendix F — Bar Code Symbology.................................................A-11

Appendix G — Interface Standards...................................................A-12

Appendix H — Auxiliary Monitor........................................................A-13

Appendix I — Multidrop Communications...............................................A-17

Appendix J — Glossary of Terms......................................................A-21

MS-3000 Single Head Decoder User’s Manual

List of Illustrations

Figure 1-1 System Diagram .......................................................................1-2

Figure 1-2 Front Panel ...............................................................................1-3

Figure 1-3 Trigger Connector Socket .........................................................1-4

Figure 1-4 Trigger Connector Wiring Diagram (untriggered) .....................1-5

Figure 1-5 Decoder to Scan Head .............................................................1-5

Figure 1-6 Rear Panel of MS-3000 Decoder ..............................................1-6

Figure 1-7 Power Connector Socket ..........................................................1-6

Figure 1-8 LAN Connector .........................................................................1-7

Figure 1-9 Host Connector .........................................................................1-9

Figure 1-10 DTE and DCE Host Connections ............................................1-9

Figure 1-11 Monitor Connector ..................................................................1-9

Figure 1-12 Bottom Mounting Diagram (not full size) ...............................1-12

Figure 1-13 Mounting Diagram (without housing, not full size) ................1-13

Figure 1-14 Grounding Diagram, Decoder-Host ......................................1-14

Figure 2-1 Configuration Program - Main Menu .........................................2-2

Figure 2-2 Communications Menu Structure .............................................2-5

Figure 2-3 Operations Menu Structure .....................................................2-13

Figure 2-4 External Level Trigger Signals ................................................ 2-15

Figure 2-5 External Edge Trigger Signals ................................................2-15

Figure 2-6 Match Code Logic Diagram ....................................................2-20

Figure 2-7 Code Types Menu Structure ...................................................2-22

Figure 2-8 User Outputs Menu Structure .................................................2-29

Figure 2-9 Raster Setup Menu Structure .................................................2-33

Figure 2-10 Raster Sweep Arc .................................................................2-33

Figure 4-1 Profile Card ...............................................................................4-3

Figure A-1 MS-2000 ...................................................................................A-2

Figure A-2 MS-3000 ...................................................................................A-2

Figure A-3 Profile Card Default Setting ......................................................A-4

Figure A-4 Host Connector Default Pins ....................................................A-5

Figure A-5 MS-90 User Outputs Menu (with Label Speed Option) ............A-9

Figure A-6 Typical Multidrop Network ......................................................A-17

Figure A-7 Polling Sequence ...................................................................A-18

Figure A-8 Select Sequence ....................................................................A-19

MS-3000 Single Head Decoder User’s Manual

List of Tables

Table 1-1 Cable Distances ........................................................................ 1-3

Table 1-2 Trigger Connector Pin Assignments .......................................... 1-4

Table 1-3 Power Connector Pin Assignments ...........................................1-6

Table 1-4 LAN Connector Pin Assignments .............................................. 1-7

Table 1-5 Host Connector Pin Assignments .............................................. 1-8

Table 1-6 Monitor Connector Pin Assignments ......................................... 1-9

Table 2-1 Raster Settings ........................................................................2-33

Table 3-1 Summary of Serial Configuration Commands ........................... 3-2

Table 3-2 Protocol Commands .................................................................. 3-7

Table 4-1 Profile Card Mode Descriptions .................................................4-2

Table 4-2 Calculating Binary Conversion ................................................4-13

Table 5-1 Summary of Operational Commands ........................................ 5-2

Table A-1 Status Lights .............................................................................A-2

Table A-2 ASCII Table with Control Characters ........................................A-3

Table A-3 Troubleshooting Table ..............................................................A-6

Table A-4 Label Speeds for Code 39 in Inches per Second ....................A-10

Table A-5 Label Speeds for Code 128 in Inches per Second ..................A-10

Table A-6 Multidrop Address Characters .................................................A-20

MS-3000 Single Head Decoder User’s Manual

vii

About the MS-3000 Decoder

The MS-3000 single he ad dec od er, c om pan ion to Mi cr o scan’ s MS -520 an d MS-1200 scan heads, is designed to acc ep t hig h sp eed bar cod e data from a scan head, translate that data in to alphanumeric characters, and send that data to a host or other terminal.

viii

MS-3000 Single Head Decoder User’s Manual

About This Manual

This manual provides com plete informati on on setting u p and installin g the MS-3000 decoder.

Chapter 1 provides overall step-by-step instructions for setting up and installing the MS-3000 decoder with specific “go to” references to other chapters and appendices.

Chapter 2 provides instructions for configuring the MS-3000 decoder by menu.

Chapter 3 provides instructions for configuring the MS-3000 decoder by serial command.

Chapter 4 describes serial ope rational comma nds that can be used b y the host.

For specifications, se e appe ndix A. T he appen dices also incl ude refe rence tables, as well as other usefu l information relating to bar coding and th e MS-3000 decoder.

MS-3000 Single Head Decoder User’s Manual

Keystroke Entries

Keystrokes to be entered from your te rminal are highlighted in bold, as in <D>, inclu ding a < left angle bracket symbol (unless redefined by Command Start Character command) and followed by a > right angle bracket symbol.

MS-3000 Single Head Decoder User’s Manual

Approvals

• UL (Underwriters Laboratories, Inc.)

• CSA (Canadian Standards Association)

• TüV (Technischer überwachungs-Verein) European models must use a similarly rated Class 1 or Class 2 power supply that is certified with the standard for Safety EN 60950:1992 + A2:1993 or A3:1995.

• FCC (Federal Communication Commission)

• This Class A digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.

Cet Appareil numerique de la cl asse A respec te toutes les exige nces du Reglement sur le material broilleur du Canada.

MS-3000 Single Head Decoder User’s Manual

Warning and Caution Summary

Caution: There are no user serviceable parts in the MS-3000 decoder. Opening the decoder voids the Microscan Systems warranty.

Note: The MS-520 and MS-1200 scan heads are designed to be connected to the MS-2000 and 3000 decoders. When installed, power for the scan head is provided by the decoder.

Caution: 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. This equipment generates, uses, and can radiate radio frequency energy, and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause interference in which case the user will be required to correct the interference at his or her own expense.

Note: For connection to a listed direct plug-in power unit marked Class 2 and rated at +12 VDC regulated @ 40 mA maximum, –12 VDC regulated @ 40 mA maximum, +5 VDC regulated @ 300 mA maximum.

xii

MS-3000 Single Head Decoder User’s Manual

Safety Labels

The following labels are found on the bottom of the MS-3000:

THIS EQUIPMENT HAS BEEN TESTED WITH CLASS A COMPUTING DEVICES, AND HAS B E E N FO UND TO COM PL Y WITH PART 15 O F FC C

RULES. SEE INST RUCTION MANUA L . OPERATIO N IN A RES IDE NT IA L ARE A

MAY CAUSE UNA CCEPTABL E INTERFERENC E TO RADIO A ND T V

RECEPTION REQUIRING THE OPERATOR TO TAKE WHATEVER STEPS ARE

NECESSARY T O CO RRE C T T H E I NT E RFERE NCE.

FIS NO. MANUFACTURED

SERIAL NUMBER

11-100018-02

1201 S.W. 7th St. Renton, WA 98 0 55

MADE IN U.S.A.

+12V, 40mA

- 12V, 40mA

+ 5V , 300mA

U.S. PATENT NO.: 4,855,581

LISTED UL 1950

4K68

POWER:

CAUT ION: The 6-32 mou nting screws

should not ex tend m ore than 0.12 in.

(3 mm ) int o th e mountin g hol e s.

Chapter

MS-3000 Single Head Decoder User’s Manual

1-1

1–Setup and Inst.

Setup and

Installation

Chapter Contents

Step 1 - Plan Scanning System............................................................1-2

Step 2 - Attach Cabling........................................................................1-3

Step 3 - Configure Decoder................................................................1-10

Step 4 - Position Scan Head and Label .............................................1-10

Step 5 - Do Read Rate Test...............................................................1-11

Step 6 - Install Decoder......................................................................1-12

Ground and Shield Considerations ....................................................1-14

This chapter provides step-by-step instructions for setting up and installing the 3000 single head decoder.

Note: Bar code labels should meet minimum ANSI (American National Standards Institute) standards as specified in ANSI Bar Code Print Quality Guideline, X3.182-1990.

Chapter 1 Setup and Installation

1-2

MS-3000 Single Head Decoder User’s Manual

1–Setup and Inst.

Plan Scanning System

Before installing the MS-3000 decoder you should sketch out a diagram of your scanning system, showing equipment, connector and cable types, and cable lengths.

Figure 1-1 shows a possible scanning system setup. There are six I/O con-

nectors on the MS-3000 decoder: the 25-pin host connector (see figure 1-9

on page 1-9), a 6--pin trigger connector (see figure 1-4 on page 1-5), the

5-pin power connector (see figure 1-7 on page 1-6), the modular RJ-45 scan head connector (see figure 1-5 on page 1-5), the modular RJ-11 LAN connector (see figure 1-8 on page 1-7), and the 9-pin monitor connector (see figure 1-11 on page 1-9).

Figure 1-1 System Diagram

Object Detector

8-pin cable

Optional

monitor

To op tiona l multidro p

concentrator

Power

pack

To 120/240 VAC power supply

Bar-coded

item fl o w

  

MS-3000

Decoder

Host

Scan Head

Attach Cabling

MS-3000 Single Head Decoder User’s Manual

1-3

1–Setup and Inst.

Attach Cabling

Front Panel Connectors

The MS-3000 decoder has six I/O connectors. On the front panel (figure 1-2) there are the following two connectors:

a. Trigger (Micr oscan or other object detector) (6-pin DIN socket) b. Scan head (modular RJ-45)

Figure 1-2 Front Panel

Under ideal conditions, maximum cable lengths can match the distances shown in table

1-1

. However, since cable lengths and sizes are dictat ed by local conditions such as wire size, wire shape (flat or round), shielding, grounding, extraneous signal noise, etc., maximum cable distanc es will vary.

Table 1-1 Cable Distances

Cabling

Maximum

Distance

RS-232 Decoder to Host 50 ft. (15.2 m) RS-422 Decoder to Host 4000 ft. (1219 m) Decoder to Scan Head 15 ft. (4.57 m) RS-485 Multidrop Trunk 4000 ft. (1219 m) RS-485 Multidrop Drop 10 ft. (3 m)



IND2 IND1

PWR

 







TRIG SCAN

Chapter 1 Setup and Installation

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MS-3000 Single Head Decoder User’s Manual

1–Setup and Inst.

Trigger Connector

The trigger connector (TRIG) is a 6-pin DIN socket (figure 1-3) that mates with a 240 degree 6-pin DIN plug. Pin assignments are shown in table 1-2.

Pin 1 is the input from the object detector. When operating the decoder in external trigger mode, a toggle at this pin causes the decoder to begin a read cycle.

Pin 2 of the trigger connector is a programmable relay driver. The MS-3000 software can be programmed to set this pin high or low upon a good read, a no read, a good match, or a mismatch. This pin can source or sink 4 mA (maximum) and can be used to drive a small relay to operate an alarm, diverter, etc.

Microscan offers an optical object detector (P/N 99-440001-03) that plugs directly into this connector and a user-customized trigger port connector (P/ N 20-600090-02).

Figure 1-4 shows examples of positive and negative external trigger inputs

that could be applied to the trigger connector. (Shown in untriggered state.)

Table 1-2 Trigger Connector

Pin Assignments

Pin Function

Trigger Input +3 VDC to + 24 VDC

TTL Relay driver output

signal 5 VDC 3+5 VDC 4 +12 VDC 5 Ground 6 Not used

1. Trigger sources other than the Microscan object detector can be used. Mechanical switches, relays, etc.—which tend to be slow and bouncy and produce multiple trigger signals—are not recommended unless equipped with optical sensors or filtered transitions (optical, Hall effect, or DC solid state relays).

Figure 1-3 Trigger

Connector Socket

TRIG

Attach Cabling

MS-3000 Single Head Decoder User’s Manual

1-5

1–Setup and Inst.

Figure 1-4 Trigger Connector Wiring Diagram (untriggered)

Scan Head Connector

To prevent voltage loss, cables between decoder and scan head should not exceed 15 feet (4.57 m) unless wire sizes exceed the minimum 26 AWG.

Figure 1-5 shows a MS-3000 decoder connected to a Microscan MS-500

scan head.

Figure 1-5 Decoder to Scan Head

3 4

Trigger input

+5 VDC +12 VDC Ground

+0 VDC to +24 VDC

5 6

N.C.

Not used

Aux. relay driver

Decoder

Solid state switchin g device

Negative Trigger

3 4

Trigger input

+5 VDC +12 VDC Ground Not used

Aux. relay driver

+0 VDC to +24 VDC

5 6

N.O.

Solid state switchin g device

Decoder

Positive Trigger

IND2 IND1

PWR

TRIG SCAN

MS-3000 Decoder

MS-520 Scan Head

Chapter 1 Setup and Installation

1-6

MS-3000 Single Head Decoder User’s Manual

1–Setup and Inst.

Back Panel Connectors

On the rear panel (figure 1-6) there are the following four connectors:

a. Power (5-pin DIN socket) b. LAN (modular RJ-11)

c. Host (25-pin D-subminiature socket)

d. Monitor (9-pin D-subminiature socket)

Figure 1-6 Rear Panel of MS-3000 Decoder

Power Connector

The power connector (figure 1-7) has a 5-pin DIN socket with pin assignments shown in table 1-3.

You may also supply the required DC voltages yourself. A mating connector (Switchcraft #05BL5M plug) is required.

Caution: Switching power supplies for Microscan equipment with a switching noise of 20 mV or greater with ±12 VDC are not recommended due to excessive ripple characteristics.

Table 1-3 Power Connector

Pin Assignments

Pin Function

1 DC Ground 2Chassis Ground 3 +5 VDC 4 –12 VDC 5 +12 VDC

POWER LAN

HOST MONITOR

Figure 1-7 Power Connector Socket

 







POWER

Attach Cabling

MS-3000 Single Head Decoder User’s Manual

1-7

1–Setup and Inst.

LAN Connector

The Local Area Network ( LA N) co nnector allows the MS-300 0 de co de r to communicate with a mu lt idr op conc en tr ato r via a 4-w ire cabl e (p r efer a bl y shielded) with a 6 -pin, 6-wir e, RJ- 11 type c onnec tor. Pin ass ignme nts a re as shown in table 1-4. The LAN connector is used when a MS-3000 decoder is configured for RS-485 multidrop communications.

For proper operation of RS-485 multidrop communications, the main cable should not exceed 4000 feet, with each drop no more than 10 feet. The Microscan MS-5000 multidrop concentrator can support up to 50 decoders or other multidrop devices on one RS-485 line. Note that the last device must be terminated correctly. RS-485 pinouts are also available at the host connector.

Host Connector

The host connector (figure 1-9 on page 1-9), a 25-pin D-subminiature socket, allows the decoder to be connected to a host, a concentrator, or other communications device such as a PLC (programmable logic controller), a monitor, a PC, a relay, a diverter, an alarm, etc.

Note:

All Microscan products are configured as DTE at the host connector

when in RS-232 operation. Caution: Do not use a host cable with more wires connected than are required

for the application. The host connector of the decoder has many outputs that could cause damage or interfere with normal operation if connected and improperly used.

Tab le 1-4 LAN Connecto r

Pin Assignments

Pin Function

1 Ground 2 Receive Data (+) 3 Receive Data (–) 4 Transmit Data (+) 5 Transmit Data (–)

Figure 1-8 LAN Connector

Chapter 1 Setup and Installation

1-8

MS-3000 Single Head Decoder User’s Manual

1–Setup and Inst.

A good read will cause a 5V signal (high or low) to be output to pin 6. A noread will cause a 5V signal (high or low) to be output to pin 8.

Caution: There must be ±12V present before the decoder will transmit data to the host. However, the decoder can receive commands without the presence of either voltage.

Table 1-5 Host Connector Pin Assignmentsa

a. The default communications mode does not support pin 4 (RTS). If RTS is not required by

the host port, pin 4 should not be wired as the results will be unpredictable.

Pin Function Comment

Chassis ground connected to dc ground

Transmit data +12v data output from the decoder

Receive data

±12v signal indicating data from the host to the decoder

Request-to-send

±12v signal asserted high by the decoder when it has data to send to the host

Clear-to-send

±12v signal asserted low by the host to stop the decoder from sending data to it (data transmission will resume when the signal is asserted high.)

TTL 5V signal indicates a good read

Signal Ground connected to chassis ground

TTL 5V signal indicates a noread

+5 VDC auxiliary supply

Trigger input +0 VDC to +24 VDC

Default (reset)

resets decoder to default configuration

Aux Input (future use)

RXD + RS-422/485

TXD – RS-422/485

RXD – RS-422/485

TXD + RS-422/485

20 +12 VDC

data terminal ready (asserted high on power-up to indicate decoder is on)

Profile Card Input

Signal Ground

–12 VDC

+12 VDC

Match Code next label read as master label, if enabled

Attach Cabling

MS-3000 Single Head Decoder User’s Manual

1-9

1–Setup and Inst.

Figure 1-10 DTE and DCE Host

Connections

Monitor Connector

The monitor connector (auxiliary terminal) connects the decoder to an auxiliary monitor via a 9-pin D-subminiature socket and cable. Table 1-6 shows auxiliary terminal pin assignments. Communication at this connector is RS-232 only.

Figure 1-11 Monitor Connector

Figure 1-9 Host Connector

HOST

Transmit

3 7Signal Grnd

HostDecoder

Receive

Transmit

Signal Grnd

Receive

Transmit

Receive

3 5 Signal G rn d

Host

Decoder

Transmit

Receive

Signal Grnd

DB-25 DTE to DE-9 DCE Connection

DB-25 DTE to DB-25 DTE Connection

Table 1-6 Monitor Connector

Pin Assignment s

Pin Function

2 Receive Data (in) 3 Transmit Data (out) 5 Signal Ground

MONITOR

Chapter 1 Setup and Installation

1-10

MS-3000 Single Head Decoder User’s Manual

1–Setup and Inst.

Configure Decoder

Settings for Communications, Operations, Code Types, and User Outputs and Raster Setup are stored in non-volatile memory and can be configured by menu, serial command, or profile card commands.

For explanations of configuration settings, see Chapter 2, “Menu Configu-

ration.”

To establish communications you will need to match the host’s or auxiliary terminal’s communication settings with your decoder’s settings (see Com-

munications Menu” on page 2-5). Also make certain that the code type

enabled in the decoder matches that of the label being used (see Code

Types Menu” on page 2-22).

Hint: Sending the command will allow your scan head to read all of the listed code types.

Position Scan Head and Label

Before testing, you will need to position the scan head and label in a manner that matches as nearly as possible the actual conditions of your application. Consult your scan head user’s manual for important setup specifications.

Communicating with an d ASCII Terminal

The MS-3000 decoder communicates in full duplex, terminal mode with no handshake. It also recognizes carriage returns and line feeds.

The host or ASCII terminal must match the following de fault settin gs before an y communication can ta ke plac e:

9600

Baud Rate,

Seven

Data Bits,

Even

Parity,

and

One

Stop Bit.

A PC or Macintosh computer can be used as a dumb terminal if connected as shown in table 1-5 on page 1-8 and running a communications program set to the above defaults. See your computer user’s manual for communication’s port pinouts.

Do Read Rate Test

MS-3000 Single Head Decoder User’s Manual

1-11

1–Setup and Inst.

Do Read Rate Test

This test calculates the percentage of scans decoded. It is useful during setup procedures to help optimize scan head-to-label orientation.

a. Place the label used i n your application i n front of the scan hea d and

within the desired read range.

Note:

Ensure that the label being scanned is of a code type enabled in the

decoder’s software.

Hint:

Read rates are easier to read on the screen if Postamble is enabled.

b. Select from the ESP Utilities menu or send a <C> command to the

decoder to start testing (see the “Enter Read Rate Test” command on

page 5-5).

A percentage number from 0 to 100 will be displayed on the monitor in the read rate test indicating the ratio of good reads per total number of scans.

c. Find the correct read rate area by

moving the label in and out and right and left while observing read rate on the monitor.

Avoid the specular reflection area (see scan head user’s manual).

d. Record the range area measurements and file the test results for

future reference. If the results are not satisfactory, reposition or re-configure the

decoder or choose a different narrow-bar-width label size.

e. Select from the ESP Utilities menu or send a <J> command to the

decoder when testing is complete (see the “Exit Read Rate Test” command on page 5-5).

Read Rate Percentage

Label Data

Chapter 1 Setup and Installation

1-12

MS-3000 Single Head Decoder User’s Manual

1–Setup and Inst.

Install Decoder

The MS-3000 decoder can be mounted temporarily using the four rubber pads, or permanently, as follows:

a. Position the decoder in a dry place. b. Before mounting, ensure that there is at least a 3 inch (76.2 mm) clear-

ance at the rear and front of the decoder for the connectors and cables being used.

c. Use the measurements provided in figure 1-12 to locate centers of

mounting holes and drill four 5/32 inch or four 4 mm holes.

d. Secure decoder with four 6-32 screws of the appropriate length.

Caution: Make certain that mounting screws do not penetrate into the decoder case more than .175 in. (4.4 mm) or damage to the decoder could result.

Figure 1-12 Bottom Mounting Diagram (not full size)

6.2"

(157.48)

Measurements in inche s (m illim ete rs )

Front

0.5"

(12.7)

1.85"

(46.99)

2.5"

(63.5)

5.6"

(142.24)

6/32 threads

(4 plac es )

Optional foot pads

(4 places)

Install Decoder

MS-3000 Single Head Decoder User’s Manual

1-13

1–Setup and Inst.

If the unit does not have housing, use the measurements provided in

figure 1-13 to locate the centers of the mounting holes.

Figure 1-13 Mounting Diagram (without housing, not full size)

4.5" (114.30)

3.8" (96.52)

5.8" (147.32)

5.2" (132.08)

0.030" (7.62)

5.8" (147.32)

0.160" (4.06) Dia. (4 places)

Front

1.0"

(25.4)

Measurements in inc hes (millimet ers)

Chapter 1 Setup and Installation

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MS-3000 Single Head Decoder User’s Manual

1–Setup and Inst.

Ground and Shield Considerations

Proper grounding is necessary for operator safety, noise reduction, and the protection of equipment from voltage transients. Buildings–including any steelwork, all circuits, and all junction boxes–must be grounded directly to an earth ground in compliance with local and national electrical codes.

RS-232 signals have a common signal ground (pin 7 of the 25-pin connector). Pin 7 is normally connected to pin 1 (chassis ground) in the decoder; however, under certain conditions (e.g., when potential differences exist between power outlet grounds) signal and chassis grounds can be isolated from each other inside the decoder by Microscan technicians.

Any data line, as necessary, can be shielded. If shielding is used, isolate it from the decoder and ground only to the host earth ground.

Noise Interference

Noise interference can be mini-

mized if cabling subject to noise interference is twisted and/or shielded or encased in grounded conduit, and the conduit or shielding (“drain” line) is grounded only to earth ground at the host, as shown in figure 1-14. You might need to examine and if necessa ry cut the shielding connec ti on at or near the concentrator cable connector.

Ground Loops

Ground loops, signal degradation due to different ground potentials in com-

municating devices, can be eliminated or minimized by ensuring that the host, concentrator, and their power supplies are connected to a common earth ground.

Figure 1-14 Grounding Diagram, Decoder-Host

HOST

Decoder

Shieldin g

Communication s Cable

Earth Ground

Chapter

MS-3000 Single Head Decoder User’s Manual

2-1

2–Menu Config.

Configuration

Chapter Contents

Communications Menu........................................................................2-5

Operations Menu...............................................................................2-13

Code Types Menu..............................................................................2-22

User Outputs Menu............................................................................2-29

Raster Setup Menu............................................................................2-33

This chapter describes how to configure the MS-3000 decoder with on screen menu commands from a host or auxiliary terminal.

All keystrokes are in bold typeface. Default parameters in the menu structures are also in bold typeface. All of these parameters, with the exception of Full Screens, can also be

changed by serial commands (see Chapter 3, “Serial Configuration”). In addition, most of these configuration parameters can also be changed

with a Microscan profile card (P/N 99-500011-01), obtainable from your Microscan representative (see Chapter 4, “Profile Card Configuration”).

Communicating with an ASCII Terminal

The MS-3000 decoder communicates in full duplex, terminal mode with no handshake. It also recognizes carriage returns and line feeds.

The host or ASCII terminal with must match the following default settings before any communication can take place: 9600 Baud Rate, Seven Data Bits

, Even

Parity, and

One

Stop Bit.

Chapter 2 Menu Configuration

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MS-3000 Single Head Decoder User’s Manual

2–Menu Config.

Entering the Menu Configuration Program

To see the Main menu (figure 2-1), from an ASCII terminal that is connected to the decoder, send the serial command <D> (enter the < > brackets as well as the upper case D).

Figure 2-1 Configuration Program - Main Menu

If the menu does not appear, see Appendix D, “Troubleshooting,” on

page A-6.

Using the Menu Configuration Program

The bottom line on the screen is called the command line. The command line identif ies 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; press SP (space bar key) or N to scroll ahead, B to scroll back, CR (carriage return key) to select, and M to return to the previous higher level menu. To return to the Main menu at any time, press ESC (escape key) and M.

1. Command start character by defa ult is a left angl e bracket, <. It ma y be redefine d by menu or serial command. However, the end character, a right angle bracket, >, cannot be changed.

2. Item 5, Raster Setup, applies only to the MS-1280 raster scan head.

3. The menu navigational keys are displayed in each menu.

MS-3000 Single Head Decoder User’s Manual

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2–Menu Config.

For example, to enable LRC (see figure 2-2, “Communications Menu

Structure,” on page 2-5 and “Longitudinal Redundancy Check” on page 2-10), you would use the following command line path:

To view LRC’s new status in the menu , p ress M to refresh the screen. To return to the Main menu, press M again. You can make additional c ha nges within another menu before exiting the program. Simply follow the same method of scrolling to and selecting each main topic, then its subtopics, until you reach the par a me te r y ou wa nt to cha ng e. Re me mb er , to ret u r n to th e Main menu at any time, press ESC (escape key) and M.

Some parameters are user defined, in which case they prompt you with an arrow for data, such as:

At the prompt, redefine the parameter within the allowable range, and press

CR to enable.

Main —> Communications

Main —> Operations Main —> Code Types Main —> User Outputs Main —> Raster Setup

Communications —> Host Protocol

Communications —> Host Por t Communications —> Aux P ort

Host Protocol —> Protocol Host Protocol —> Preamble = ^M Host Protocol —> Preamble = Disabled Host Protocol —> Postamble = ^M^J Host Protocol —> Postamble = Disab le d

Host Protocol —> LRC = Disabled

Host Protocol —> Response Timeout

in 1ms incs = 12

Host Protocol —> Intercharacter Delay

in 1ms incs = 0

Host Protocol —> LRC = Disabled

Host Protocol —> LRC = Enabled

From the Main menu, press CR at the Communications prompt (this is the first prompt displayed in the Menu Configuration Program) to access the Communications menu.

Since LRC is a subtopic of Host Protocol, press CR to access the Host Protocol parameters.

Protocol is the first parameter under Host Protocol. Press SP until you reach LRC, then press CR.

To enable LRC, pr es s CR, SP, and CR.

Chapter 2 Menu Configuration

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MS-3000 Single Head Decoder User’s Manual

2–Menu Config.

Saving Menu Changes

Press ESC (escape key) to see the following on the command line:

Press M to return to the Main menu, or press E to exit the Menu Configuration program. If E is pressed, the following question will appear:

Press N to exit without saving changes, or press Y to retain the current settings to non-volatile RAM for power up. If Y is selected, a beep will indicate the save has been carried out.

Loss of Communications

Defaulting might be necessary if communications between the decoder and another device are interrupted or if using incompatible equipment (for example, a terminal is set to communicate at 9600 baud, but the decoder is configured at 38.4K baud). Communication can also be lost if an address has been assigned to the decoder.

To reset parameters to default values, see Appendix C, “Defaulting the

Decoder,” on page A-4.

Defining Special Characters

To define any control character from the ASCII table: Press SP once, then

enter the control character by holding down the control key and simultaneously pressing the desired character. For example to define a line feed, press SP, then Control and J simultaneously. It is displayed as ^J on the command line and as <LF> in the menu when the screen is refreshed.

To define CR as a character: Press SP, then CR. It is displayed as ^M on the command line and as <CR> in the menu when the screen is refreshed.

To define a space as a character: Press SP twice. It is displayed as a blank space in the menu when the screen is refreshed. While it appears that nothing has been assigned, the hex value 20 will be sent during data transmission.

To select NUL as t he char act er: Press SP, then a 0 (zero). It is displayed as <NUL> in the menu when the screen is refreshed.

Communications Menu

MS-3000 Single Head Decoder User’s Manual

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2–Menu Config.

Communications Menu

The Communications menu allows you to set the communication protocols between the decoder and the host.

Figure 2-2 Communications Menu Structure

Protocol

–

Point-to-Point

–

Point-to-Point w/RTS/CTS

–

Point-to-Point w/XON/XOFF

–

Point-to-Point w/RTS/CTS & XON/XOFF

–

Polling Mode D

–

Multidrop

–

Address = 1

– User Definable (1 to 50)

–

User Defined

–

RES – Address = ^A – REQ – EOT – STX – ETX – ACK – NAK

–

User Defined Multidrop

–

RES – Address = ^A – REQ – EOT – STX – ETX – ACK – NAK

Preamble

–

User Definable (ASCII char.)

Preamble

–

Disabled

–

Enabled

Postamble

–

^M ^J

–

User Definable (ASCII char.)

Postamble

–

Disabled

–

Enabled

Host Protocol

LRC

–

Disabled

–

Enabled

Response Timeout

–

User Definable (0 to 65,000)

Interchar Delay

–

User Definable (0 to 255)

Baud Rate

–

9600– 1200

–

19.2K– 2400

–

38.4K– 4800

–

600

Parity

–

Even

–

Odd

–

None

Stop Bits

–

One

–

Two

Data Bits

–

Seven

–

Eight

Communications

Host Port

Aux Port

Baud Rate

–

9600– 1200

–

19.2K– 2400

–

38.4K– 4800

–

600

Parity

–

Even

–

Odd

–

None

Stop Bits

–

One

–

Two

Data Bits

–

Seven

–

Eight

–

Bold text represents default settings.

RS-422

–

Disabled

–

Enabled

Aux Mode

–

Disabled

–

Transparent

–

Half Duplex

–

Full Duplex

Chapter 2 Menu Configuration

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MS-3000 Single Head Decoder User’s Manual

2–Menu Config.

There are three subtopics in this m enu: Hos t Protocol, H ost Port, and Aux Po rt. To help visualize the menu’s organization and to locat e the page numb er where each topic is describ ed, se e figure 2-2, “Communications Menu

Structure,” on page 2-5.

Note: Changes in Communications parameters or assigning an addres s to the decoder can cause loss of communica tio ns wit h the co nfi guration termi nal when you exit the menu program (whether or not changes are saved for power-on).

Host Protocol Parameters

Protocol

Default: Point-to-Point Options: Point-to-Point, Point-to-Point with RTS and CTS, Point-to-Point

with XON/XOFF, Point-to-Point with RTS/CTS and XON/XOFF, Polling Mode D, Multidrop, User Defined, User Defined Multidrop

Protocols define the seq ue nce an d for m at i n whi ch in fo rm at io n is t ran sf erre d between devices. Generally there are two basic protocol modes: unpolled and polled. In unpolled mode (all of the Point-to-Point protocols), a device sends information wi th ou t bei ng asked f or b y the ho st . I n polled mode (Multidrop, Polling Mode D, an d Us er D efi n ed Mul ti dr op), a device has an address and waits for a request from the host before sending data.

Note: User Defined and User Defined Multidrop have more options available to them. Selection instructions for these protocols are provided under each topic.

Selecting: Has this effect:

Point-to-Point

Has no address and sends data to the host (RS-232) whenever it is available and without any request or handshake from the host.

Point-to-Point with RTS/CTS (Request-toSend/Clear-to-Send)

Used only with RS-232. This is a simple handshaking protocol that allows a device to initiate data transfers to the host with an RTS (request-to-send) transmission. The host, when ready, responds with a CTS (clear-to-send) and the data is transmitted. RTS and CTS signals are transmitted over two dedicated wires (pins 4 and 5) as defined in the RS-232 standard.

Communications Menu

MS-3000 Single Head Decoder User’s Manual

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2–Menu Config.

Point-to-Point with XON/XOFF (Transmitter On/Off)

Used only with RS-232

or RS-422. This selection enables the host to send a single byte transmission command of start (XON) or stop (XOFF). If an XOFF has been received from the host, data will not be sent to the host until the host sends an XON. During the XOFF phase, the host is free to carry on other chores and accept data from other devices.

Point-to-Point with RTS/CTS and XON/XOFF

Used only with RS-232. It is a combination of Pointto-Point with RTS/CTS and Point-to-Point with XON/XOFF.

Polling Mode D Like Point-to-Point, Polling Mode D requires a

separate connection to the host but unlike Point-toPoint, it requires the device to have an address and to wait for a poll from the host before sending data.

When in Polling Mode D, an address 1 is automatically displayed on the configuration screen. However, during transmission, a 1C hex poll address (FS) and a 1D hex select address (GS) are substituted for the 1.

Multidropa

Similar to Polling Mode D except that a unique poll address and select address are required for each multidrop device, and only one host port connection is needed for up to 50 devices. (For Multidrop poll and select characters, see Table A-6, “Multidrop

Address Characters,” on page A-20.)

Requires a concentrator or controller using RS-485 communications. When Multidrop is selected, the protocol characters for RES, REQ, etc. are assigned automatically. (See “Appendix I —

Multidrop Communications” on page A-17 for

poll and select sequences.)

Selecting: Has this effect:

Note: Decoders intended to link up to a MS-5000 multidrop concentrator can only be configured in standard Multidrop protocol.

Hint: Attach a tag to each decoder to identify its multidrop address.

Chapter 2 Menu Configuration

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MS-3000 Single Head Decoder User’s Manual

2–Menu Config.

Note: Definitions of commands in User Defined and User Defined Multidrop must be duplicated in host applications to enable poll and select sequences to execute correctly during transmission.

Typically, parameters in User Defined Multidrop are defined by first enabling Multidrop, then enabling User Defined Multidrop. This pre-loads Multidrop characters into the parameters. You then change individual characters to match the host or other requirements.

User Defined

Used only with RS-232 or RS-422. ASCII characters can be assigned as an address and as protocol commands (RES, REQ, EOT, STX, ETX, ACK, and NAK). User Defined is necessary when a new protocol must be defined to match a specific host protocol. When User Defined is selected, the displayed protocol commands match those of the previously selected protocol. User Defined is considered to be in a polled mode only if an address has been assigned. The address can be any ASCII character from the ASCII in appendix B, except NUL.

User Defined Multidrop

Used when connecting to a concentrator or other device that does not match standard Multidrop protocol.

Any single character (01 hex to 7E hex) in the ASCII table can be assigned as the address character. The character chosen is used as the poll character and the subsequent ASCII character becomes the select character. For example, if a ^A (01 hex) is selected as the address, ^B (02 hex) becomes the select address that the host will use in sending host select commands. (See Table A-I, “Multidrop

Communications,” on page A-17.)

a. Once the decoder is configured for Multidrop, a profile card, a terminal connected to the aux-

iliary RS-232 pins, or a default procedure must be used to access the configuration menus again (although serial commands will continue to function).

b. For example a simple ACK/NAK protocol can be developed by first selecting Point-to-Point,

then User Defined, and then assigning characters to ACK and NAK commands. First scroll to

the following command: HOST PROTOCOL --> PROTOCOL --> USER DEFINED--> ACK = --> Enter a ^F by holding down the Control

key while pressing the F key, and then press CR to

see the following: HOST PROTOCOL --> PROTOCOL --> USER DEFINED --> ACK = ^F The mnemonics ACK and NAK replace the default NULs in the menu.

Selecting: Has this effect:

NOTE: A specific ASCII character must not be assigned more than once.

Note: A specific ASCII character must not be assigned more than once.

Communications Menu

MS-3000 Single Head Decoder User’s Manual

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2–Menu Config.

Preamble

Default: ^M (and a null). Corresponds to <CR><NUL> (carriage return/null)

displayed in the menu.

Options: Any ASCII character, including control characters. Control char-

acters entered on the command line are displayed in the menu as mnemonic characters. See “Defining Special Characters,” on

page 2-4 and table A-2 on page A-3.

Allows you to define a one or two character data string that can be added to the front of the decoded data. For example, a carriage return and line feed would display each decoded message on its own line.

If User Defined, Polling Mode D, or Multidrop is enabled, the Preamble and Postamble character s a re t ran smi tt e d wi th in th e STX a nd ETX da ta blo ck.

Preamble (enable/disable)

Default: Disabled Options: Disabled, Enabled (within any protocol)

Allows you to enable or disable the preamble character(s).

Postamble

Default: ^M^J. Corresponds to <CR><LF> (carriage return/line fe ed) dis-

played in the menu.

Options: Any ASCII character, including control characters. Control char-

acters entered on the command line are displayed in the menu as mnemonic characters. See “Defining Special Characters,” on

page 2-4 and Table A-2, “ASCII Table with Control Characters,” on page A- 3.

Allows you to define a one or two character data string that can be added after the decoded message.

If User Defined, Polling Mode D, or Multidrop is enabled, the Postamble and Preamble characters are t ran sm it te d wi thi n th e STX and ETX da t a bl ock.

Postamble (enable/disable)

Default: Disabled Options: Disabled, Enabled (within any protocol)

Allows you to enable or disable the Postamble character(s).

Chapter 2 Menu Configuration

2-10

MS-3000 Single Head Decoder User’s Manual

2–Menu Config.

Longitudinal Redundancy Check

Default: Disabled (in unpolled mode), Enabled (in polled mode) Options: Disabled, Enabled

An error-checking routine that verifies the accuracy of transmissions. It is the exclusive OR of all characters following the SOM (start of message) up to and including the EOM (end of message).

Response Timeout

Default: 12 ms Options: 0 to 65,000 ms. A zero (0) causes an indefinite wait.

Allows you to set the time the decoder will wait before timing out if ACK, NAK, and ETX are enabled, and a host response is expected.

Intercharacter Delay

Default: 0. Corresponds to 0 ms displayed in the menu. Options: 0 to 255. A zero (0) causes no delay between characters.

Allows you to set the time interval in milliseconds between individual characters transmitted from the decoder to the host. A high setting will significantly slow down communications. For example, a 200 setting will result in a 1/5 second delay between each character that is transmitted.

Host Port Parameters

Allows you to set parameters for host port communications.

Baud Rate

Default: 9600 Options: 9600, 19.2K, 38.4K, 600, 1200, 2400, 4800

Allows you to set the number of bits transmitted per second.

NOTE: Due to timing considerations, polled modes require 2400 baud or faster.

Parity

Default: Even Options: Even, Odd, None

Allows you to select an error detection routine in which one data bit in each character is set to 1 or 0 so that the total number of 1 bits in the data field is even or odd.

Communications Menu

MS-3000 Single Head Decoder User’s Manual

2-11

2–Menu Config.

Stop Bits

Default: One Options: One, Two

Allows you to select the last one or two bits in each character to indicate the end of the character.

Data Bits

Default: Seven Options: Seven, Eight

Allows you to establish the total number of bits in each character.

RS-422

Default: Disabled Options: Disabled, Enabled

Note: Used only in Point-to-Point protocol only, and not with RTS/CTS.

Whenever RS-422 is disabled, RS-232 is enabled in the background. However, when Multidrop is enabled, the functioning protocol is RS-485

regardless of the displayed status of RS-422 in the menus. Before enabling RS-422, first double-check that Multidrop is not enabled. (See “Protocol,”

on page 2-6.)

(See App end ix G, “Int er face St and ar ds,” on page A-1 2 for additional information on RS-422.)

Aux Port Parameters

Aux Port (auxiliary port) allows you to set communications settings between the decoder 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 decoder.

Note: Aux Port operates in RS-232 only. See Appendix H, “Auxiliary Moni-

tor,” on page A-13 for a full description of auxiliary port options.

Chapter 2 Menu Configuration

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MS-3000 Single Head Decoder User’s Manual

2–Menu Config.

Aux Mode

Default: Disabled Options: Disabled, Transparent, Half Duplex, Full Duplex

Aux Mode (auxiliary mode) allows you to select a co mmunica tio ns mod e f or auxiliary operations (see Appendix H, “Auxiliary Monitor,” on page

A-13).

Other Aux Port Parameters

The other Aux Port parameters—Baud Rate, Parity, Stop Bits, and Data Bits—are identical to the host port parameters and are changed in the same manner (see page 2-10).

Note: The Aux Port baud rate should never exceed Host Port baud rate or auxiliary port data could be lost.

Operations Menu

MS-3000 Single Head Decoder User’s Manual

2-13

2–Menu Config.

Operations Menu

The Operations menu allows you to set the operations parameters for the decoder.

To help visualize the menu’s organization and to locate the page number where each topic is described, see figure 2-3.

Figure 2-3 Operations Menu Structure

Triggering Mode

–

Continuous Read

–

Continuous Read 1 Output

–

External Level

–

External Edge

–

Serial Data

–

Serial Data & Edge

End of Read Cycle

–

Timeout

–

New Trigger

–

Timeout & New Trigger

Timeout in 10 ms incs *

–

100

–

User Definable (ASCII char.)

Serial Trigger Character

–

User Definable (ASCII char.)

External Trigger Polarity

–

Positive

–

Negative

Number of Reads

–

User Definable (1 to 31)

Match Code

–

Disabled

–

Enabled

Bar Code Output

–

Enabled

–

Disabled

Number of Labels

–

User Definable (1 to 6)

Operations

–

Bold text represents default settings.

Field Separator

–

, (comma)

–

User Definable (ASCII char.)

* Divide the number entered on the command line by 100 for time in seconds.

Noread Message (7 digits)

–

NOREAD

–

User Definable (ASCII char.)

Noread Message

–

Enabled

–

Disabled

When to Output

–

As Soon As Possible

–

End of Read Cycle

Chapter 2 Menu Configuration

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MS-3000 Single Head Decoder User’s Manual

2–Menu Config.

Triggering Mode

Default: Continuous Read Options: Continuous Read, Continuous Read 1 Output, External Level,

External Edge, Serial Data, Serial Data & External Edge

Allows you to establish the type of trigger event that will initiate or end the read cycle. (See “End of Read Cycle” on page 2-16.)

Selecting: Has this effect:

Continuous Read T rigger input options are disabled and the decoder 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 range of the scan head. When To Output options have no affect on Continuous Read. Continuous Read is useful in testing label or scan head functions.

Continuous Read 1 Output

Label data is immediately transmitted with Timeout enabled for End Of Read Cycle. If the label doesn't change, the decoder will repeat the output at the end of each subsequent timeout period. For example, if Timeout were set to one second, the decoder would output the label data immediately, and then repeat the output at intervals of one second, for as long as the label continued to be scanned.

With Timeout disabled (that is, End Of Read Cycle set to New Trigger), the decoder will output the current label data immediately, but output it only once. A new label appearing at any time in the scan range will produce a new read output as long as the new label is not identical to the previous label.

External Level Allows a read cycle to be initiated by a trigger signal

from an object detector when an object appears within the detector’s range. The read cycle endures until the object moves out of the detector’s range (figure -1 on page -15), unless a timeout occurs and Timeout is enabled for End of Read Cycle (page

2-16).

NOTE: If Continuous Read is enabled with Match Code, the decoder defaults to Continuous Read 1 Output mode.

NOTE: Enabling Continuous Read 1 Output when Number of Labels (page

2-21) is set to any

number greater than one will cause Number of Labels to default back to one.

Operations Menu

MS-3000 Single Head Decoder User’s Manual

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2–Menu Config.

External Edge As with Level, Edge allows a read cycle to be

initiated by a trigger signal from an object detector when it detects the appearance of an object (rising edge). But unlike Level mode, the removal of an object (falling edge) does not end the read cycle. With Edge enabled, the read cycle ends with a good read, a timeout, or a new trigger (figure -1).

Serial Data The decoder accepts an ASCII character from the

host or controlling device as a trigger to start a read cycle.

Serial Data & External Edge

The decoder accepts either an external trigger or a serial ASCII command to start a read cycle.

a. Continuous Read 1 Output will allow an output regardless of how Goo d Decode Rea d is se t. b. Level and Edge apply to the active l ogic state (positi ve or negative) tha t exists while the ob ject is

in a read cycle, between the rising edge and fall ing edge . For the purpose of this discussion , ris- ing edge is the trigger signal asso ciated wi th the appear ance of an object a nd fallin g edge is the trigger signal associated with t he subseq uent di sapp earance of the ob je ct.

Selecting: Has this effect:

Second trigger The same object, mov in g ou t of t he detector's beam, causes a seco nd trigger (falling edg e trigger) signal to be sent to the decoder, ending the read cycle.



 



First trigger An object, m ov i ng in front of the detector beam, causes the first trigger (rising edge trigger) signal to be sent to the decoder, initiating the read cycle.

Object detector



 



 



Object detector

Subsequent rising edge trigger

Object #2, moving in front of the detector's beam, causes a second trigger (rising edge trigger) signal to be sent to the decoder. This signal initiates a new read cycle

and

ends the

prev ious read c ycl e

provided

that New Trigger or Timeout and New Trigger is enabled and a good read or timeout has not already occurred.



 



 



First rising edge trigger Object #1, moving in

front of the d etector beam, causes the first trigger (rising edge trigger) signal to be sent to the decoder, initiating the read cycle.

Object detector



 



 



Object detector

Figure 2-1 External Edge Trigger Signals

Figure 2-1 Ex ternal Level Trigger Signals

Chapter 2 Menu Configuration

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MS-3000 Single Head Decoder User’s Manual

2–Menu Config.

End of Read Cycle

Default: Timeout Options: Timeout, New Trigger, Timeout & New Trigger

Allows you to choose the conditions that will end the read cycle. The read cycle is the time during which the decoder 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.

Note: The Aux Port baud rate should never exceed Host Port baud rate or auxiliary port data could be lost.

Selecting: Has this effect:

Timeout Can end the read cycle after a specified period of time, and

if no label has been read, causes a noread message, if enabled, to be transmitted.

With either External Edge, Serial Data, or Serial Data & Edge enabled, a timeout ends the read cycle.

With External Level enabled, the read cycle does not end until the falling edge trigger occurs, and the next read cycle does not begin until the next rising edge trigger.

With Continuous Read 1 Output enabled, a timeout initiates a new read cycle and allows the same label to be read again.

New Trigger Ends the read cycle at the occurrence of a new trigger

event, and if no label has been read, causes a noread message, if enabled, to be transmitted at the occurrence of the new trigger event.

With either External Edge, Serial Data, or Serial Data & Edge enabled, an edge or serial trigger ends a read cycle and initiates the next read cycle.

With External Level enabled, a falling edge trigger ends a read cycle. However, the next read cycle does not begin until the occurrence of the next rising edge trigger.

Operations Menu

MS-3000 Single Head Decoder User’s Manual

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2–Menu Config.

Timeout (in 10 ms incs)

Default: 100 (one second). Corresponds to 1000 ms displayed in the

menu.

Options: 0 to 65535. Divide the number entered on the command line by

100 for time in seconds.

Note:

Timeout or Timeout & New Trigger under End of Read Cycle (page 2-16)

must be enabled for Timeout (in 10 ms incs) to take effect.

Allows you to define the duration of the timeout period.

Serial Trigger Character

Default: ^]. Corresponds to <GS> displayed in the menu. Options: Any single ASCII character, including control characters, except a

NUL (00H), an existing host command character,

or an on-line protocol character. Control characters entered on the command line are displayed in the menu as mnemonic characters. See

“Defining Special Characters” on page 2-4 and Table A-2, “ASCII Table with Control Characters,” on page A-3.

Note: Serial Data (page 2-15) or Serial Data & Edge (page 2-15) must be

enabled for Serial Trigger Character to take effect. “N/A” is displayed in the menu when all other triggering modes are enabled.

Allows you to define a single ASCII character as the host serial trigger character that initiates the read cycle. The serial trigger is considered an on-line

Timeout & New Trigger

Ends the read cycle after a specified period of time or at the occurrence of new trigger event, and if no label has been read, causes a noread message, if enabled, to be transmitted.

With either External Edge, Serial Data, or Serial Data & Edge enabled, a timeout, or an edge or serial trigger, whichever comes first, ends the read cycle. An edge or serial trigger also initiates a new read cycle.

With External Level enabled, the read cycle does not end until the occurrence of a falling edge, and the next read cycle does not begin until the next rising edge trigger.

1. For example, assigning an upper case D would nullify the <D> (Enter Menu Configuration) command. For a list of operational commands used by the decoder, see table A-1 on page 5-

Selecting: Has this effect:

Chapter 2 Menu Configuration

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MS-3000 Single Head Decoder User’s Manual

2–Menu Config.

host command and requires the same command format as all host commands (that is, to be entered within the < > brackets).

External Trigger Polarity

Default: Positive Options: Positive, Negative

Note: External Level (page 2-14), External Edge (page 2-15), or Serial Data & Edge (page 2-15) must be enabled for External Trigger Polarity to take effect. “N/A” is displayed in the menu when all other triggering modes are enabled.

Allows you to determine whether a positive or negative transition will initiate the read cycle.

Note: If using the Microscan object detector (P/N 99-440001-03), use positive trigger polarity.

Noread Message

Default: NOREAD Options: Up to seven ASCII characters (except a NUL).

Allows you to define any combination of ASCII characters (except a NUL) up to seven characters as the noread message.

The noread message, if enabled and if no bar cod e label has been decode d, will be transmitted to the host at a timeout or the end of a read cycle.

Noread Message (enable/disable)

Default: Enabled Options: Enabled, Disabled Note:

If Noread Output is enabled, the noread message will only output if Bar

Code Output is also enabled.

Allows you to enable or disable the noread message.

Bar Code Output

Default: Enabled Options: Enabled, Disabled

Allows you to choose whether or not to send label data (or noreads) to the host. When disabled, a label is decoded and the read cycle transpires as usual, but neither label data nor the noread message is transmitted to the host. All decoder counters are updated, and the number of good reads or noreads can be obtained via operational commands.

Operations Menu

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2–Menu Config.

When to Output

Default: As Soon As Possible Options: As Soon As Possible, End of Read Cycle

Allows you to choose when bar code data is sent to the host.

Number of Reads Before a Good Decode

Default: 1 Options: 1 to 31

Allows you to select the number of good reads (from 1 to 31) required per label before a good decode output.

Note:

Be sure to set the value within the determined scan rate for the scanning setup so that the decoder is capable of scanning a label the required number of times.

Match Code

Default: Disabled Options: Disabled, Enabled Note:

A triggered mode (page 2-14 to page 2-15) must be enabled for Match Code to take effect.

Note: If Match Code is enabled with Continuous Read, the decoder defaults to Continuous Read 1 Output mode, and the label data must change before the decoder will output data again, unless a timeout, if enabled, occurs.

Note: Enabling Match Code when Number of Labels is set to any number greater than one will cause Number of Labels to default back to one.

Allows you to enter a master label into the decoder’s memory to be compared with subsequently scanned labels.

Selecting: Has this effect:

As Soon As Possible Causes bar code data (good reads) to be

transmitted immediately upon a good decode.

End of Read Cycle Causes bar code data output to be delayed until

the end of the read cycle.

Chapter 2 Menu Configuration

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2–Menu Config.

With Match Code enabled, a master label can be entered in three ways:

1. With New Master Pin enabled (see page 2-31), toggling pin 25 to ground (pin 7) enables the next good read to be the master label.

2. Sending serial command <G> enables the next good read to be the

master label.

3. Sending serial command <)XXXX)> downloads data as master

label. (Master label data is entered in place of the Xs.)

Figure 2-4 shows the sequence of operation (and reference) for setting

up and entering master labels.

Figure 2-4 Match Code Logic Diagram

Enable Match Code:

1. by menu selection,

2. by operational command

<E>, or

3. by serial configuration

command <Kn1>.

Enable New Master Pin:

1. by menu selection, or

2. by serial configuration command <Kz1>.

Toggle internal pin 25

to GND (pin 7) to

enter next label scanned as the

Read in the

master label.

Download a new master label directly into memory:

1. by operational command <)XXXX)>.

Enter the next label scanned as the master label:

1. by operational command <G>.

Compare the

master label with

subsequent labels*

* See the option/outputs available in the relay

driver you have selected.

Operations Menu

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2–Menu Config.

Number of Labels

Default: 1 Options: 1 to 6

Note: If Number of Labels is set to any number greater than one while Match Code or Continuous Read 1 Output is enabled, Number of Labels will default back to one.

Allows you to choose the number of different labels that will be read in a single trigger event. The labels can be a mix of any of the enabled bar code symbologies and more than one label can be decoded per scan line.

The following conditions apply:

1. Each label must be different to be read.

2. The maximum number of characters in any one label is 31.

3. The maximum number of characters in a single scan line is 62.

4. The maximum number of characters for all labels is 128, including preamble and postamble and all spaces and commas.

5. All noread messages are posted at the end of the data string.

6. If more than one label is within the scan beam at the same time, label data may not be displayed in the order of appearance.

Field Separator

Default: , (comma) Options: Any available ASCII character, except NUL.

Allows you to choose the separator character to be inserted between labels.

Chapter 2 Menu Configuration

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2–Menu Config.

Code Types Menu

The Code Types menu allows you to choose among five bar code types and define their parameters.

Figure 2-5 Code Types Menu Structure

Status

–

Enabled

–

Disabled

Narrow Margins

Status

–

Disabled

–

Enabled

Code Types

–

Bold text represents default settings.

Check Digit

–

Disabled

–

Enabled

Check Digit Output

–

Disabled

–

Enabled

Fixed Code Length

–

Disabled

–

Enabled

Code Length

–

User Definable (1 to 31)

Code 39

Status

–

Disabled

–

Enabled

Start & Stop Match

–

Enabled

–

Disabled

Start & Stop Output

–

Enabled

–

Disabled

Fixed Code Length

–

Disabled

–

Enabled

Code Length

–

User Definable (1 to 31)

Codabar

Status

–

Disabled

–

Enabled

Check Digit

–

Disabled

–

Enabled

Check Digit Output

–

Disabled

–

Enabled

Code Length #1

–

User Definable (even, 0 to 30)

Code Length #2

–

User Definable (even, 0 to 30)

I 2 of 5

Status

–

Disabled

–

Enabled

Fixed Code Length

–

Disabled

–

Enabled

Code Length

–

User Definable (1 to 31)

Code 128

Status

–

Disabled

–

Enabled

EAN

–

Disabled

–

Enabled

Supplementals

–

Disabled

–

Enabled

–

Required

UPC

Separator

–

Enabled

–

Disabled

Separator (character)

–

, (comma)

–

User Definable (ASCII char.)

Large Interchar Gap

–

Disabled

–

Enabled

Large Interchar Gap

–

Disabled

–

Enabled

Code Types Menu

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2–Menu Config.

Note:

Options listed in the command line do not always appear in the same

order as those posted in the first column of the menu.

Options can be defined for any bar code type whether or not the bar code itself is enabled at the time.

Narrow Margins

Status

Default: Disabled Options: Disabled, Enabled

Allows the decoder to read bar codes with qui et zones less th an 10 times th e narrow-bar-width. Quiet zon e is a t erm used to descr ibe t he mini mum spac e at the leading and trailing ends o f a label. Eac h quiet zone can be as small as five times the narrow bar element wh en Nar row Margins is enable d.

Code 39

Status

Default: Enabled Options: Enabled, Disabled

Check Digit

Default: Disabled Options: Disabled, Enabled

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 (see “Triggering Mode” on page 2-14), an invalid check digit calculation will cause a noread message to be transmitted at the end of the read cycle.

Check Digit Output

Default: Disabled Options: Disabled, Enabled

When enabled, the check digit character is sent al ong w ith the lab el da ta. When disabled, label data is sent without th e check digit.

Chapter 2 Menu Configuration

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MS-3000 Single Head Decoder User’s Manual

2–Menu Config.

Large Intercharacter Gap

Default: Disabled Options: Disabled, Enabled

Allows the decoder to read labels with gaps between bar code characters exceeding three times the narrow element width.

Fixed Code Length

Default: Disabled Options: Disabled, Enabled

Used to increase data integrity by ensuring that only one label length will be accepted.

Code Length

Default: 10 Options: 1 to 31 Note:

Fixed Code Length (page 2-24) must be enabled for Code Length to take

effect.

Allows you to specify the exact number of characters that the decoder will recognize (this does not include start and stop). The decoder will ignore any code not having the specified length.

Codabar

Status

Default: Disabled Options: Disabled, Enabled

Start & Stop Match

Default: Enabled Options: Enabled, Disabled

Requires the Codabar start and stop characters (a, b, c, or d) to match before a valid read can occur.

Start & Stop Output

Default: Enabled Options: Enabled, Disabled

Allows the start and stop characters to be transmitted with bar code data.

Code Types Menu

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2–Menu Config.

Large Intercharacter Gap

Default: Disabled Options: Disabled, Enabled

Allows the decoder to read labels with gaps between bar code characters exceeding three times the narrow element width.

Fixed Code Length

Default: Disabled Options: Disabled, Enabled

Used to increase data integrity by ensuring that only label length will be accepted.

Code Length

Default: 10 Options: 1 to 31 Note:

Fixed Code Length (page 2-25) must be enabled for Code Length to take

effect.

Allows you to specify the exact number of characters that the decoder will recognize. The decoder will ignore any code not having the specified length.

Interleaved 2 of 5

Status

Default: Disabled Options: Disabled, Enabled

Because I 2 of 5 is a continuous code, it is prone to substitution errors. Hence, a code length must be defined and a bar code label containing an even number of digits must be used. It is also recommended that a Modulus 10 check digit be used to ensure the best possible data integrity.

Check Digit

Default: Disabled Options: Disabled, Enabled

I 2 of 5 uses a Modulus 10 check digit.

Chapter 2 Menu Configuration

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MS-3000 Single Head Decoder User’s Manual

2–Menu Config.

Check Digit Output

Default: Disabled Options: Disabled, Enabled

When enabled, the check digit character is sent along with the label data. When disabled, label data is sent without the check digit.

Code Length #1

Default: 10 Options: 0 to 30, even. If you enter an odd number the decoder will use the

next lower number.

With I 2 of 5, two code lengths can be defined. When using only one label length in an application, we recommend setting Code Length #2 to 0 to ensure data integrity. If a check digit is used, it must be included in the code length count.

Code Length #2

Default: 6 Options: 0 to 30, even. If you enter an odd number the decoder will use the

next lower number.

If using a second label, you may also specify a zero or any even code length from 2 to 30. If not using a second label, set Code Length #2 to 0 to ensure data integrity.

UPC

Status

Default: Disabled Options: Disabled, Enabled

When enabled, the decoder will read UPC version A and UPC version E only.

EAN

Default: Disabled Options: Disabled, Enabled Note:

UPC must be enabled for EAN to take effect.

When EAN is enabled, the decoder will read UPC version A, UPC version E, EAN 13, and EAN 8. It will also append a leading zero to UPC version A label information and transmit 13 digits. If you do not want to transmit 13 digits when reading UPC version A labels, disable EAN.

Code Types Menu

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2–Menu Config.

Supplementals

Default: Disabled Options: Disabled, Enabled, Required Note:

Narrow Margins must be enabled if the gap between the standard code and

the supplemental code is between 5:1 and 10:1 (in relation to narrow-bar-width).

Allows the decoder to read supplemental bar code data that has been appended to the standard UPC or EAN codes.

When set to Required, the decoder treats the supplemental data and the bar code label as a single label. Also, supplemental data must be found or a noread will result.

When set to Enabled, the decoder treats the supplemental data and the bar code label as separate labels.

Separator

Default: Enabled Options: Enabled, Disabled

Allows you to insert a character between the standard UPC or EAN code and the supplemental code.

Separator (character)

Default: , (comma) Options: Any ASCII character.

Allows you to change the separator character from a comma to a new value.

Chapter 2 Menu Configuration

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MS-3000 Single Head Decoder User’s Manual

2–Menu Config.

Code 128

Status

Default: Disabled Options: Disabled, Enabled

Fixed Code Length

Default: Disabled Options: Disabled, Enabled

Allows you to increase data integrity by ensuring that only one label length will be accepted.

Code Length

Default: 10 Options: 1 to 31 Note:

Fixed Code Length must be enabled for Code Length to take effect.

Allows you to specify the exact number of characters that the decoder will recognize. The decoder will ignore any code not having the specified length.

User Outputs Menu

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2–Menu Config.

User Outputs Menu

The User Outputs menu all ows yo u to con f igu re the decod er’s output.

Figure 2-6 User Outputs Menu Structure

Beeper

Default: On Good Options: On Good, On Noread, Disabled

A beep is emitted either after each good read of a bar code label, after each noread, or not at all, according to the setting.

Note:

The beep period will be short for triggered modes where a new trigger occurs immediately or the output is delayed to the end of the read cycle on edge and serial triggers.

Beeper Volume

Default: Level 4 Options: Level 4, Level 5, Level 1, Level 2, Level 3

Beeper

Status

–

On Good

–

On Noread

–

Disabled

Beeper Volume

–

Level 4

–

Level 5

–

Level 1

–

Level 2

–

Level 3

Full Screens

–

Enabled

–

Disabled

New Master Pin

–

Disabled

–

Enabled

User Outputs

–

Bold text represents default settings.

* Divide the number entered on the command line by 100 for time in seconds.

Laser On/Off

–

Disabled

–

Enabled

Reverse Video

–

Disabled

–

Enabled

Good/Bad Polarity

–

Positive

–

Negative

Relay Driver

–

Mismatch or Noread

–

Good Match

–

Mismatch

–

Noread

Command Start Character

–

User Definable (ASCII char.)

Good/Bad Pulse Width*

–

50 ms

–

User Definable (0 to 255)

Beeper Speed

–

Fast

–

Slow

Serial command Echo

–

Disabled

–

Enabled

Beep on serial Command

–

Disabled

–

Enabled

Chapter 2 Menu Configuration

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2–Menu Config.

Beeper Speed

Default: Fast Options: Fast, Slow

Beeper Speed allows you to set the beeper to accommodate your application. The beeper takes approximately 80 ms to sound when Slow is enabled. If your application speed is faster than 80 ms (approximately), enable Fast.

Full Screens

Default: Enabled Options: Enabled, Disabled

Allows you to display eit he r th e f ul l me nu scr een o r just the co mm an d li ne . When Full Screens is di sabl ed, on ly th e co mman d li ne wil l be dis pla ye d.

Relay Driver

Default: Mismatch Or Noread Options: Mismatch Or Noread, Good Match, Mismatch, Noread Note:

All options (except Noread) require that you enable Match Code (page

2-19) and download a master label into memory.

Allows you to determine the conditions under which a Relay Driver pulse of 5V is output. To see your options for enabling Match Code and downloading a master label into memory, see figure 2-4, “Match Code Logic

Diagram,” on page 2-20.

Selecting: Has this effect:

Mismatch or Noread

Sends a pulse to pin 2 of the trigger connector when a label’s data does not match that of the master label, or the label is not decoded before the end of the read cycle.

Good Match Sends a pulse to pin 2 of the trigger connector when

a label’s data matches that of the master label.

Mismatch Sends a pulse

to pin 2 of the trigger connector

when

a label’s

data does not match that of the

master label.

Noread Sends a pulse

to pin 2 of the trigger connector when no data is decoded before the end of the read cycle.

User Outputs Menu

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2–Menu Config.

New Master Pin

Default: Disabled Options: Disabled, Enabled Note:

Match Code (page 2-19) and a triggered mode (page 2-14) must be

enabled for New Master Pin to take effect.

Allows you to externally toggle pin 25 to momentarily bring it to ground (pin

7). This clears any existing master label information from memory and records the next good read as the new master label information.

Laser On/Off

Default: Disabled Options: Disabled, Enabled Note:

A serial or external trigger (see “Triggering Mode” on page 2-14) must be

enabled for Laser On/Off to take effect.

When enabled, the laser is ON only during the read cycle. When disabled, the laser operates continuously.

Note:

Laser On/Off does not relate to the <H> (Enable Laser Scanning) or

(Disable Laser Scanning) operational commands on page 5-3.

Reverse Video

Default: Disabled Options: Disabled, Enabled

When enabled, the decoder will read bar code labels with bars that are lighter in color than their corresponding backgrounds.

Good/Bad Polarity

Default: Positive Options: Positive, Negative

Allows you to choose between positive and negative output signals for pins 6 (good read) and 8 (noread) on the host connector and pin 2 on the trigger connector.

Chapter 2 Menu Configuration

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2–Menu Config.

Good/Bad Pulse Width

Default: 5 (.05 seconds). Corresponds to 50 ms displayed in the menu. Options: 0 to 255 (0 to 2.55 seconds). Divide the number entered on the

command line by 100 for time in seconds.

Allows you to set the duration of the good read/no read output signals at host connector pins 6 and 8 by entering any number from 0 to 255.

Caution: Too long of a pulse width can cause missed labels, especially if Good/ Bad Pulse Width exceeds End of Read Cycle Timeout (see page 2-16,).

Command Start Character

Default: < Options: Any ASCII character.

Allows you to define a new ASCII start character in a serial command.

Serial Command Echo

Default: Disabled Options: Disabled, Enabled

When enabled, serial configuration commands (“K” commands) will be processed and the new string for that command will be echoed back to the host. If an invalid command is sent to the host, the decoder will echo back the current setting of that command. For example, if the current Noread Message is “NOREAD” and <Kk1,NONSENSE> is entered, the decoder will echo back: <Kk1,NOREAD>. In this example the attempted entry “NONSENSE” exceeds the maximum allowable seven characters. Therefore it is rejected and the current NOREAD message is echoed back and remains the Noread Message.

Note: It is important to note that if a command with multiple fields is processed, some of the fields may have been processed properly following an “invalid” command. These changes will be in the string echoed back so that the user wi ll know what did or did not change.

Beep on Serial Command

Default: Disabled Options: Disabled, Enabled

When enabled, the decoder beeps once whenever a K command is entered to indicate that the command was accepted and processed. If an invalid command is entered, the decoder beeps 5 times to indicate an invalid entry. However, this does not necessarily mean that all data fields have been entered incorrectly. Only one bad field needs to be found in order to activate the 5 beep response.

Raster Setup Menu

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2–Menu Config.

Raster Setup Menu

Note: Raster Setup is applicable to the MS-1280 raster scan head only.

The Raster Setup menu allows you to set top and bottom offset values as well as the raster motor speed.

Figure 2-7 Raster Setup Menu Structure

Status

Default: Enabled Options: Enabled, Disabled For additional information on raster setup see the MS-1280 Raster Scan

Head User’s Manual.

Top Offset in Degrees

Default: 0 (degrees) Options: 0 to 45 (in one-degree increments)

Status

–

Enabled

–

Disabled

Top Offset in Degrees

–

User Definable (0 to 45)

Bottom Offset in Degrees

–

User Definable (0 to 45)

Sweeps per Second

–

User Definable (0 to 135)

Raster Setup

–

Bold text represents default settings.

Table 2-1 Raster Settings

Raster

Arc

Sweeps per Second

Minimum Maximum

1° 1 135

5° 1 75 10° 1 45 15° 1 35 20° 1 29 25° 1 23 30° 1 21 35° 1 19 40° 1 17 45° 1 14

Bottom

Offset = 45°

Top

Offset = 0°

MS-1280 Raster Scan Head

Figure 2-8 Raster Sweep Arc

Chapter 2 Menu Configuration

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MS-3000 Single Head Decoder User’s Manual

2–Menu Config.

Note: The top offset must always be less than the bottom offset or the resulting arc will be 0 degrees.

Top Offset in Degrees, along with Bottom Offset in Degrees, allows you to set the raster sweep arc. See figure 2-8.

Bottom Offset in Degrees

Default: 45 (degrees) Options: 0 to 45 (in one-degree increments)

Note: The bottom offset must always be greater than the top offset or the resulting arc will be 0 degrees.

Bottom Offset in Degrees, along with Top Offset in Degrees, allows you to set the raster sweep arc. See figure 2-8 on page 2-33.

Sweeps per Second

Default: 14 Options: 0 to 135

Allows you to control the raster motor speed. A “sweep” is defined as a single pass, up or down, describing the raster image.

table A-1 on page 2-33 shows minimum and maximum possible sweep

speeds at selected raster ar cs. Th e m ini mu m possi ble speed at any arc is always one sweep per second. Maxi mu m swee p sp ee ds are t he max imu ms to which the scan head defaults—even when you enter higher speeds.

To maximize the number of scans a label will receive, select as few as possible sweeps per second. However, to ensure that the minimum required scan lines cross the bar code label, it is essential that at least two full sweeps occur during the time it takes for the label to pass through the readable scan width area.

For example, if the label is readable in the read range for only 1/10th of a second, then the number of sweeps per second should be at least 20. If readable for only 1 second, then sweeps per second (SPS) should be at least 2. To see the formula for calculating sweeps per second, see the

MS-1280 Raster Scan Head User’s Manual.

Chapter

MS-3000 Single Head Decoder User’s Manual

3-1

3–Serial Config.

Serial