Rockwell-automation 2755 AtomScan Bar Code Reader Manuel d'utilisateur Page 22
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- Table des matières
- DEPANNAGE
- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
3–2 Designing Your Scanner System
Publication 2755-6.9
The height is measured from one end of a bar to the other, and its
length is always the distance from one end of the symbol to the other,
including the Quiet Zones. A Quiet Zone is the empty space before
or after the bars, and is usually equal to 10 times the Narrow Element
Width.
Quiet Zones
Symbol Length = L
Symbol
Height = H
Quiet
Zones
L
H
A bar code reader cannot reliably read a poor quality symbol. Test
proposed bar code symbol samples to ANSI Standard X3.182-1990,
Bar Code Print Quality Guideline.
• Low-cost verifiers that can test this standard are available from
several companies.
• Symbol samples can be submitted to an independent symbology
testing company.
The ANSI guideline specifies six parametric tests plus two pass/fail
tests to determine the printed symbol quality. The tests result in an
overall letter grade of A, B, C, or FAIL assigned to the symbol.
• Grade A printed symbols. Any reader should be able to read
them.
• Grade B symbols. Many readers can read them, including
AtomScan
+
readers.
• Grade C symbols. Symbols may appear to decode successfully,
but in production the performance may drop substantially.
Symbol Height and Length
Symbol Quality
- AtomScan 1
- Code Readers 1
- Allen-Bradley 1
- Important User 2
- Information 2
- Table of Contents 3
- Configuring Your Reader 4
- Hardware Operation 4
- Table of Contents toc–iii 5
- Chapter Objectives 7
- Contents of this Manual 7
- Conventions Used in this 8
- Intended Audience 8
- Related Publications 8
- Introduction to AtomScan 9
- Procedures 10
- 3. Install the reader 11
- 4. Install the interface box 12
- 5. Install the power supply 12
- • baud rate = 9600 13
- • parity = even 13
- • stop bits = one 13
- • data bits = 7 13
- Hardware Features 16
- Interface Box Features 17
- Decoding 18
- Safety Information 19
- Scan Beam Options 20
- Accessories 20
- Designing Your Scanner System 21
- Symbol Height and Length 22
- Symbol Quality 22
- Symbol Orientation 23
- Direction 24
- Tilt, Pitch, and Skew 25
- Determining Read Range 26
- Calculating the Number of 29
- Picket Fence Calculation 30
- Installing Your Hardware 31
- Installing the System 32
- Hardware 32
- 4–4 Installing Your Hardware 34
- Mounting Surface 34
- Connecting System 35
- Hardware Together When 35
- Using an Interface Box 35
- Using an Interface Box in a 41
- Daisy-Chain Configuration 41
- 4–14 Installing Your Hardware 44
- Not Using an Interface Box 45
- 5–4 Configuring Your Reader 49
- [Control]. It 49
- [0] (zero) 49
- Communications Menu 50
- Host Protocol Parameters 51
- 5–7Configuring Your Reader 52
- Operations Menu 54
- 5–13Configuring Your Reader 58
- 5–14 Configuring Your Reader 59
- Code Types Menu 60
- 5–17Configuring Your Reader 62
- 5–18 Configuring Your Reader 63
- • Status 64
- Scanner Output Menu 65
- 5–22 Configuring Your Reader 67
- Scanner Setup Menu 68
- Serial Configuration 69
- Concatenating Serial Commands 70
- Serial Command Status Request 70
- Losing Communications 70
- Serial Configuration Commands 71
- Sserial command status,serial 72
- • Auxiliary Port 76
- • External Trigger Level 77
- • Match Code Type 77
- • New Master Pin 78
- • Narrow Margins 78
- • Bar Code Output 81
- • Beeper 82
- • Laser On/Off 82
- • Serial Verification 82
- Decode Test 84
- Adjusting Reader 84
- Parameters 84
- Scan Width 85
- Label Speed 85
- Status Commands 91
- Operating Scanner System 94
- • Postamble = CR (^M) 95
- • Postamble is enabled 95
- • transparent 96
- • non–buffered full-duplex 96
- • non-buffered half-duplex 96
- 6–14 Hardware Operation 99
- [<Zd>] (Restore/Save 99
- Reader RS-232RS-232 IB1 Host 99
- Publication 2755-6.9 100
- Operating the Power Supply 101
- Operating the Host Device 101
- Chapter 7 102
- Troubleshooting the 103
- Technical Support Services 104
- Specifications 105
- Reader Specifications 106
- Interface Box 107
- Power Supply 107
- Cable Pinouts 108
- Interface Box Pinouts 109
- Scanner Port 110
- RS-485/422 Port 110
- RS-232 Port 111
- ASCII Table 112
- Multidrop Communications 113
- Polling Sequence 115
- Select Sequence 116
- Application Examples 117
- Flexible Interface Module 119
- Application Examples E–5 121
- Module data 122
- SLC 5/03 and SLC 5/04 123
- Controllers 123
- SLC Program 126
- PLC-5 Controller 127
- PLC-5 controllers 128
- PLC-5 Controllers Setup 129
- DTAM Plus DeviceNet 130
- DeviceNet Operation 132
- Application Examples E–17 133
- European Union Directives 134
- Declaration of Conformity 135
- Glossary 136
- GlossaryG–2 137
- Glossary G–3 138
- GlossaryG–4 139
- Glossary G–5 140
- Worldwide representation 141
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