Leuze electronic DCR 202i User manual

DCR 202i Camera-based code reader
Original operating instructions
EN 2016/01 - 50130061
We reserve the right to
make technical changes

Leuze electronic DCR 202i 2
© 2016
Leuze electronic GmbH + Co. KG
In der Braike 1
D-73277 Owen / Germany
Phone: [phone]
Fax: [phone]
http://www.leuze.com
[email protected]

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1 About this document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.1 Used symbols and signal words . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.1 Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2 Foreseeable misuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.3 Competent persons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.4 Exemption of liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3 Device description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1 Device overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1.1 About the DCR 200i code reader . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1.2 Performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1.3 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.2 Device construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.3 Connection technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.4 Indicators and operational controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.4.1 LED indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.4.2 Bar graph display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.4.3 Control buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4 Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.1 Camera operating modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.1.1 Single trigger mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.1.2 Reading gate control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.1.3 Burst mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.1.4 Presentation mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.2 Reference code comparison . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.3 Leuze webConfig tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.1 Reading of 1D-codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.2 Reading of 2D-codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.3 Code reading with polarization filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.4 Code reading with diffusor foil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6 Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.1 Determining the mounting position of the code reader . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.1.1 Selecting a mounting location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.1.2 Avoiding total reflection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.1.3 Determining the reading distance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.2 Mounting the code reader . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
6.2.1 Mounting with M4 fastening screws. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.2.2 Mounting with the BTU 320M-D12 mounting system . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.2.3 Mounting with the BT 320M mounting bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.3 Replace housing hood. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.4 Attaching the diffusor foil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
7 Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
7.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
7.2 PWR / SWIO – voltage supply / RS 232/RS 422 / switching inputs/outputs . . . . . . . . . . . 29
7.3 HOST - Host input / Ethernet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
7.4 Ethernet star topology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

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7.5 Cable lengths and shielding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
7.6 Connecting code reader to fieldbus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
8 Starting up the device - Basic configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
8.1 Measures to be performed prior to the initial commissioning . . . . . . . . . . . . . . . . . . . . . . 35
8.2 Starting the device. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
8.3 Setting the communication parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
8.3.1 Manually setting the IP address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
8.3.2 Automatically setting the IP address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
8.3.3 Address Link Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
8.3.4 Ethernet host communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
8.3.5 RS 232/RS 422 communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
8.4 Configuration via configuration codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
8.5 Activating device functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
8.6 Performing further settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
8.6.1 Decoding and processing the read data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
8.6.2 Control of the decoding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
8.6.3 Activating camera operating mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
8.6.4 Control of the switching outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
8.6.5 Optimizing reading performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
8.6.6 Transfer configuration data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
9 Commissioning – Leuze electronic webConfig tool . . . . . . . . . . . . . . . . . . . . . . 43
9.1 System requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
9.2 Start webConfig tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
9.3 Short description of the webConfig tool. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
9.3.1 Change operating mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
9.3.2 Menu options of the webConfig tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
9.3.3 CONFIGURATION menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
9.3.4 Configuring applications with the wizard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
10 Interfaces – Communication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
10.1 Online commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
10.1.1Overview of commands and parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
10.1.2General online commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
10.1.3Online commands for system control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
10.2 XML-based communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
11 Care, maintenance and disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
11.1 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
11.2 Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
11.3 Disposing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
12 Diagnostics and troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
13 Service and support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
13.1 What to do should servicing be required? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
14 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
14.1 General specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
14.2 Optical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
14.2.1Reading performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
14.2.2Code specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
14.3 Dimensioned drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

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14.4 Dimensioned drawings - Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
15 Ordering information and accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
15.1 Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
15.2 Type overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
15.3 Optical accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
15.4 Cables accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
15.5 Other accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
16 EC Declaration of Conformity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
17 Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
17.1 ASCII character set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
17.2 Code - sample . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
17.3 Configuration via configuration codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
17.4 License terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

About this document
Leuze electronic DCR 202i 6
1 About this document
1.1 Used symbols and signal words
Table 1.1: Warning symbols and signal words
Table 1.2: Other symbols
Table 1.3: Terms and abbreviations
Symbol indicating dangers to persons
NOTICE Signal word for property damage
Indicates dangers that may result in property damage if the measures for dan-
ger avoidance are not followed.
CAUTION Signal word for minor injuries
Indicates dangers that may result in minor injury if the measures for danger
avoidance are not followed.
Symbol for tips
Text passages with this symbol provide you with further information.
Symbols for action steps
Text passages with this symbol instruct you to perform actions.
CMOS Semiconductor process for implementing integrated circuits
(Complementary Metal-Oxide-Semiconductor)
DCR Camera-based code reader
(Dual Code Reader)
EMC Electromagnetic compatibility
EN European standard
FE Functional earth
FOV Read field of the code reader (Field of View)
IO or I/O Input/Output
IP address Network address, which is based on the Internet Protocol (IP)
LED LED
(Light Emitting Diode)
MAC address Hardware address of a device in the network
(Media Access Control address)
PCRE Regular expressions for reference code comparison
(Perl Compatible Regular Expressions)
PELV Protective extra low voltage with reliable disconnection
(Protective Extra Low Voltage)
ROI Region of interest of the code reader
PLC Programmable Logic Control

About this document
Leuze electronic DCR 202i 7
TCP/IP Internet protocol family (Transmission Control Protocol/Internet Protocol)
UDP Network transmission protocol (User Datagram Protocol)
UL Underwriters Laboratories

Safety
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2 Safety
This code reader was developed, manufactured and tested in accordance with the applicable safety stan-
dards. It corresponds to the state of the art.
2.1 Intended use
The code readers of the DCR 200i series are camera-based code readers for all commonly used bar
codes, stacked codes and DataMatrix codes as well as for codes of the GS1 DataBar family.
Areas of application
The code readers of the DCR 200i series are especially designed for the following areas of application:
• Packaging systems
• Mounting/handling technology
• Analysis technology
2.2 Foreseeable misuse
Any use other than that defined under Intended use or which goes beyond that use is considered
improper use.
CAUTION
Observe intended use!
Only operate the device in accordance with its intended use.
The protection of personnel and the device cannot be guaranteed if the device is operated in a manner
not complying with its intended use.
Leuze electronic GmbH + Co. KG is not liable for damages caused by improper use.
Read the technical description before commissioning the device.
Knowledge of this technical description is an element of proper use.
CAUTION
Observe intended use!
The protection of personnel and the device cannot be guaranteed if the device is operated in a manner
not complying with its intended use.
Only operate the device in accordance with its intended use.
Leuze electronic GmbH + Co. KG is not liable for damages caused by improper use.
Read these original operating instructions before commissioning the device.
Knowledge of the original operating instructions is an element of proper use.
NOTICE
Integrated illumination!
The code readers of the DCR 200i series correspond to the following classification with respect to the
integrated illumination:
Illumination red: risk group 0 (exempt group) in acc. with EN 62471
NOTICE
Comply with conditions and regulations!
Observe the locally applicable legal regulations and the rules of the employer's liability insurance asso-
ciation.

Safety
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In particular, use of the device is not permitted in the following cases:
• in rooms with explosive atmospheres
• in circuits which are relevant to safety
• In food processing
• for medical purposes
2.3 Competent persons
Connection, mounting, commissioning and adjustment of the device must only be carried out by competent
persons.
Prerequisites for competent persons:
• They have a suitable technical education.
• They are familiar with the rules and regulations for occupational safety and safety at work.
• They are familiar with the original operating instructions of the device.
• They have been instructed by the responsible person on the mounting and operation of the device.
Certified electricians
Electrical work must be carried out by a certified electrician.
Due to their technical training, knowledge and experience as well as their familiarity with relevant stan-
dards and regulations, certified electricians are able to perform work on electrical systems and indepen-
dently detect possible dangers.
In Germany, certified electricians must fulfill the requirements of accident-prevention regulations BGV A3
(e.g. electrician foreman). In other countries, there are respective regulations that must be observed.
2.4 Exemption of liability
Leuze electronic GmbH + Co. KG is not liable in the following cases:
• The device is not being used properly.
• Reasonably foreseeable misuse is not taken into account.
• Mounting and electrical connection are not properly performed.
• Changes (e.g., constructional) are made to the device.
NOTICE
Do not modify or otherwise interfere with the device!
Do not carry out modifications or otherwise interfere with the device.
The device must not be tampered with and must not be changed in any way.
The device may only be opened for exchanging the housing hood.
There are no user-serviceable parts inside the device.
Repairs must only be performed by Leuze electronic GmbH + Co. KG.

Device description
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3 Device description
3.1 Device overview
3.1.1 About the DCR 200i code reader
The code readers of the DCR 200i series are camera-based code readers for all commonly used bar
codes, stacked codes and Data Matrix codes (e.g. Code 128, EAN 8/13, ECC200, QR etc.) as well as for
codes of the GS1 DataBar family.
The extensive options for device configuration via control buttons, configuration codes or software enable
adaptation to a multitude of reading tasks. The high resolution in combination with a very high depth of
field as well as the compact design make the device ideal for use in packaging machines.
Code readers of the DCR 200i series perform numerous tasks in industrial code reading such as:
• Omnidirectional code reading
• Reading of codes while at a standstill or in motion
• Manual reading by holding up codes
• In packaging machines
• In automatic handling and testing machines
The DCR 202i code readers are available in several optics models:
• DCR 202i FIX-N1-102-R3 with high-density optics (N-optics)
• DCR 202i FIX-M1-102-R3 with medium-density optics (M-optics)
• DCR 202i FIX-F1-102-R3 with low-density optics (F-optics)
The DCR 202i code readers are operated as a stand-alone single device with individual IP address in an
Ethernet star topology.
Information on technical data and characteristics: see chapter 14.
3.1.2 Performance characteristics
• Decoding of 1D-, stacked- and 2D-codes.
• Maximum depth of field and reading distance of approx. 40 mm … 360 mm.
• High object speed and decoding performance of up to 6 m/s with 10 decodings.
• Reference code comparison.
• Integrated process interfaces RS 232, RS 422 and Ethernet.
The MA 2xxi modular connection units are available for connecting to other fieldbus systems, e.g.,
PROFIBUS, PROFINET, EtherCAT, etc.
• Four freely programmable switching inputs/outputs for the activation or signaling of states.
• 1 switching input
• 1 switching output
• 2 switching inputs/outputs
• Integrated red LED illumination for illumination of the rectangular read field.
• Green feedback LED for direct acknowledgment of whether the read process was successful.
• Two control buttons for intuitive operation without PC.
• Industrial design: degree of protection IP 65 acc. to EN 60529.
• Diverse mounting options with mounting threads on rear and side surfaces.
• Variously coded M12 connections for unique assignment of the connections:
• Voltage supply, RS 232/RS 422, switching inputs/outputs
• Ethernet connection
• webConfig, a web-based configuration tool for configuration of all device parameters.
No additional configuration software necessary.
• Installation wizard for simple configuration in just a few steps.
• Integrated teach functions for automatic adjustment of the exposure time, of the code types, and of
the number of digits and for teaching a reference code.

Device description
Leuze electronic DCR 202i 11
3.1.3 Accessories
Special accessories are available for the code reader (see chapter 15):
• Mounting systems for mounting.
• Housing hood with integrated protective screen made of glass for increased protection against
scratches or welding sparks.
• Housing hood with integrated linear polarisation filter – avoids additional interfering reflections.
• Diffusor foil that can be affixed to housing hoods, with plastic or glass screen. The diffusor foil
reduces interfering reflections.
• Ready-made connection and interconnection cables for M12 connectors.
• External illumination and mounting bracket for external illumination.
For further information, contact your responsible Leuze electronic subsidiary or Leuze electronic cus-
tomer service (see chapter 13).
• MA 2xxi modular connection units for connection to fieldbus systems (see chapter 7.6).
3.2 Device construction
1 Lens
2 Control panel with indicator LEDs, control buttons, bar graph display
3 LEDs for illumination (red light)
4 M4 mounting thread
5 Device housing
6 Housing hood
7 M12 connection technology
8 Feedback LED (green)
Figure 3.1: Device construction
3.3 Connection technology
The device is connected using variously coded M12 connectors:
• A-coded, 12-pin, M12 connection for operating voltage, switching inputs/outputs, RS 232/RS 422
interface
• D-coded, 4-pin, M12 connection for the Ethernet connection
2
3
3
1
8
5
7
6
4

Device description
Leuze electronic DCR 202i 12
1 PWR / SWIO, M12 plug, 12-pin, A-coded
2 HOST, M12 socket, 4-pin, D-coded
Figure 3.2: Electrical connections
3.4 Indicators and operational controls
The device is equipped with the following indicators and operational controls:
• Feedback LED
The green feedback LED indicates whether a read process was successful. This function is activated
upon shipment of the device from the factory and can be deactivated via the webConfig tool.
Upon successful decoding, the feedback LED illuminates briefly (GOOD READ, MATCH).
• Three indicator LEDs (PWR, NET, LINK)
• Six-level bar graph display for function selection and display of the read quality (SIGNAL QUALITY)
• Two control buttons
Ready-made cables are available for all connections (see chapter 15.4 "Cables accessories").
NOTICE
Shielding connection!
The shielding connection is done via the M12 connector housing.
PWR / SWIO HOST
1 2

Device description
Leuze electronic DCR 202i 13
1 LED indicators: PWR, NET, LINK
2 Bar graph display
3 Control buttons
Figure 3.3: Structure of the control panel
3.4.1 LED indicators
PWR LED
Table 3.1: PWR indicators
1
3
2
Color State Description
--- OFF Device off
No operating voltage
Green ON (continuous
light)
Device ok
• Code reading possible
• Self test successfully finished
• Device monitoring active
Orange ON (continuous
light)
Service mode
• Code reading possible
• No data on the host interface
Red Flashing Device ok, warning set
• Code reading possible
• Temporary operating fault
ON (continuous
light)
Device error/parameter enable
No code reading possible

Device description
Leuze electronic DCR 202i 14
NET LED
Table 3.2: NET indicators
LED LINK
Table 3.3: LINK indicators
3.4.2 Bar graph display
Function selection
The following functions are selected and displayed via the bar graph display (see chapter 8.5 "Activating
device functions"):
•
TRIG : Trigger function for activating a read process
• AUTO : Auto setup function for determining the optimum read setting
• ADJ : Adjustment function for aligning the device
•
TEACH : Teach function for teaching a reference code
The individual functions are selected and activated with the control buttons.
• Select function with the navigation button : The function LED flashes.
• Activate function with the enter button : The function LED illuminates continuously.
Color State Description
--- OFF No operating voltage
• No communication possible
• Ethernet protocols not released
Green Flashing Initialization of the device
Establishing communication
ON (continuous
light)
Operation OK
• Network mode ok
• Connection and communication to Host established
Red Flashing Communication error
• Temporary connection error
• If DHCP active: No IP address could be obtained
ON (continuous
light)
Network error
• No connection established
• No communication possible
NOTICE
NET indicator only for Ethernet communication!
The NET indicator refers only to the Ethernet communication, not to the RS 232/RS 422.
Color State Description
Green ON (continuous
light)
Ethernet connected (LINK)
Yellow Flashing Data communication (ACT)
A preselected function (flashing LED) does not yet have any influence on the functionality. If no
button is pressed for a longer period of time, flashing of the LED is ended automatically by the
device.

Device description
Leuze electronic DCR 202i 15
3.4.3 Control buttons
The functions of the bar graph display are controlled via the control buttons.
• – Navigation button: Scroll through the functions in the bar graph display from left to right.
• – Navigation button: Scroll through the functions in the bar graph display.
Example: Activation of the trigger
Press the navigation button .
• The TRIG LED flashes and the Trigger function is preselected.
Press the enter button .
• The TRIG LED illuminates continuously.
• The configured Trigger function (e.g., reading gate control) is started.
If you activate the TRIG , AUTO , ADJ or TEACH function via the control buttons, the device
accepts no commands via the process interface. Process mode is thereby interrupted.
A preselected function (flashing LED) does not yet have any influence on the functionality. If no
button is pressed for a longer period of time, flashing of the LED is ended automatically by the
device.

Functions
Leuze electronic DCR 202i 16
4 Functions
This chapter describes the functions of the code reader:
• Camera operating modes; see chapter 4.1
• Reference code comparison; see chapter 4.2
• webConfig tool; see chapter 4.3
4.1 Camera operating modes
The camera operating mode defines how the code reader starts a read process and decodes the codes if
a code is located in the read field.
4.1.1 Single trigger mode
In the Single trigger mode camera operating mode, the code reader captures
one image and attempts to
decode it. Under uniform conditions, this camera operating mode makes fast decoding possible.
4.1.2 Reading gate control
The Reading gate control camera operating mode is activated upon shipment from the factory. The
reading gate control opens a time window for the read process in the code reader – the reading gate. In
this time window, the code reader can capture and decode one or more codes.
4.1.3 Burst mode
In the Burst mode camera operating mode, the code reader captures
multiple images in quick succession
after activation by a trigger signal. Decoding occurs following image capture, thereby allowing the codes
to be detected more quickly. As soon as the decoding result corresponds to the settings, the decoding
stops the capture of the remaining images.
1 Continuous image capture
2 Decoding
3 Output of the read data
Figure 4.1: Burst mode
4.1.4 Presentation mode
In the Presentation mode camera operating mode, the code reader is in the idle state in a kind of wait
mode.
In the event of a change in the image area, e.g., by holding up a code, the code reader captures images
with illumination (as previously configured) until a code is read successfully. The code reader then
switches back to the wait mode and the illumination switches off after a few seconds.
A
ABCD
BCDEFGH A B DC
1
1
2
3

Functions
Leuze electronic DCR 202i 17
Reading the same code multiple times
To prevent the same code from being read and output repeatedly in the Presentation mode camera oper-
ating mode, a delay time (
Reread Delay ) can be defined that must elapse before the code reader can read
a code again.
The delay time is set or deactivated with the webConfig tool (see chapter 9 "Commissioning –
Leuze electronic webConfig tool").
Configuration > Control > Reread delay
4.2 Reference code comparison
With the reference code comparison, the code reader compares the actual decoding result with a stored
reference code – the exact code content is compared.
Options for teaching-in a new reference code:
• webConfig tool: Configuration > Decoder > Reference
• Online command via the host interface
• Signal via a digital switching input
• TEACH function on the control panel of the code reader
In the webConfig tool, the exact code content can be entered for comparison.
Regular expressions
As an alternative to the exact code comparison, regular expressions can be used for a partial comparison.
Regular expressions can only be entered via the webConfig tool (see chapter 9 "Commissioning –
Leuze electronic webConfig tool").
Detailed information on regular expressions can be found on the Internet under Perl Compatible Regular
Expressions (PCRE) http://www.pcre.org/.
•Example 1
The code reader is to perform a partial comparison of two characters 42. Any number of characters
and content may precede the string 42.
• Comparison string entered in the webConfig tool: 42
• Positive reference code comparison (match): 123425
• Negative reference code comparison (mismatch): 12345
•Example 2
The code reader is to perform a partial comparison of two characters 42. Beginning with the string
42, any number of characters and content may follow.
• Comparison string entered in the webConfig tool: ^42
• Positive reference code comparison (match): 42345
• Negative reference code comparison (mismatch): 12345
4.3 Leuze webConfig tool
The webConfig configuration tool offers a graphical user interface for the configuration of the code reader
via a PC (see chapter 9 "Commissioning – Leuze electronic webConfig tool").
The wizard of the webConfig tool can be used to easily configure the code reader in just a few steps.
NOTICE
Using space characters with regular expressions!
When entering regular expressions, note the use of space characters.

Applications
Leuze electronic DCR 202i 18
5 Applications
Typical applications for code readers include the following.
5.1 Reading of 1D-codes
Figure 5.1: Reading of 1D-codes

Applications
Leuze electronic DCR 202i 19
5.2 Reading of 2D-codes
Figure 5.2: Reading of 2D-codes in packaging systems
5.3 Code reading with polarization filter
1 Code reading without polarization filter
2 Code reading with polarization filter
Figure 5.3: Using the polarization filter
By using the linear polarization filter integrated in the housing hood, you can avoid interfering reflections.
When the polarization filter is used, the exposure settings change. The exposure time is in-
creased considerably.
1 2

Applications
Leuze electronic DCR 202i 20
5.4 Code reading with diffusor foil
1 Code reading without diffusor foil
2 Code reading with diffusor foil
Figure 5.4: Using the diffusor foil
The diffusor foil reduces interfering reflections by increasing the scatter of the integrated LED illumination
of the code reader.
When the diffusor foil is used, the exposure settings change.
1 2