Datalogic DataVS1 User manual

Smart Vision Sensor
INSTRUCTION MANUAL

DATALOGIC AUTOMATION
Via Lavino 265 - 40050 Monte S.Pietro - Bologna – Italy
Tel: [phone]- Fax: [phone]
www.automation.datalogic.com e-mail: info.automat[email protected]
DATALOGIC AUTOMATION reserves the right to make modifications and improvements without prior notification.
Datalogic and the Datalogic logo are registered trademarks of Datalogic S.p.A. in many countries, including the U.S.A. and the E.U.
826003842 rev.B © Copyright Datalogic 2009-2010

DataVS1 Series Instruction Manual
INDEX
1. GENERAL INFORMATION ............................................................................................................................................................... 1
1.1. Conventions used in the manual ........................................................................................................................................... 1
1.2. General description ............................................................................................................................................................... 1
1.3. Available models ................................................................................................................................................................... 1
2. ELECTRICAL CONNECTIONS......................................................................................................................................................... 2
3. OPERATING DISTANCES ................................................................................................................................................................ 3
4. VISION SENSOR AND CONFIGURATOR: GENERAL CHARACTERISTICS ................................................................................ 4
4.1. DataVS1 Vision Sensor ......................................................................................................................................................... 4
4.2. Installing the sensor............................................................................................................................................................... 5
4.3. VSC Configurator .................................................................................................................................................................. 7
4.4. Installing the configurator ...................................................................................................................................................... 8
4.5. Hardware connections......................................................................................................................................................... 10
4.6. Safety recommendations..................................................................................................................................................... 11
5. INSPECTION CONFIGURATION USING VSC............................................................................................................................... 12
5.1. Introduction.......................................................................................................................................................................... 12
5.2. VSC user interface .............................................................................................................................................................. 12
5.3. General considerations........................................................................................................................................................ 13
5.4. Step 1 - Configuration of the camera settings and choice of the inspection tool................................................................. 13
5.5. Step 2 - Configuration of the selected inspection tool ......................................................................................................... 19
5.6. Step 3 - Inspection tool function check................................................................................................................................ 20
5.7. Step 4 - Output definitions and saving the inspection settings to the sensor ...................................................................... 23
6. VSC CONFIGURATOR: ADVANCED FUNCTIONS....................................................................................................................... 26
6.1. Output.................................................................................................................................................................................. 26
6.2. Trigger Mode ....................................................................................................................................................................... 28
6.3. Load/Save ........................................................................................................................................................................... 30
6.4. Fail Inspector ....................................................................................................................................................................... 32
6.5. DataVS1 Ver........................................................................................................................................................................ 33
6.6. Input Config ......................................................................................................................................................................... 34
6.6.1. Standard Protocol......................................................................................................................................................34
Protocol description................................................................................................................................................................................34
Protocol selection....................................................................................................................................................................................35
Inspection switch timing..........................................................................................................................................................................35
6.6.2. Expert Protocol ..........................................................................................................................................................36
Protocol Description...............................................................................................................................................................................36
Protocol Selection ...................................................................................................................................................................................38
6.6.3. Digital Teach In..........................................................................................................................................................38
6.7. Password............................................................................................................................................................................. 38
7. CONTROLS ..................................................................................................................................................................................... 41
7.1. Remarks .............................................................................................................................................................................. 41
7.2. Brightness............................................................................................................................................................................ 42
7.3. Contrast ............................................................................................................................................................................... 45
7.4. Position................................................................................................................................................................................ 49
7.5. Width ................................................................................................................................................................................... 52
7.6. Edge count .......................................................................................................................................................................... 56
7.7. Pattern Match ...................................................................................................................................................................... 59
7.8. OCV..................................................................................................................................................................................... 63
7.9. Pattern Count ...................................................................................................................................................................... 67
8. TEACH BUTTON............................................................................................................................................................................. 71
9. CHECKS AND PERIODIC MAINTENANCE ................................................................................................................................... 72
10. WARRANTY ....................................................................................................................................................................................72
11. TECHNICAL DATA.......................................................................................................................................................................... 73
12. OVERALL DIMENSIONS ................................................................................................................................................................ 74
13. ACCESSORIES...............................................................................................................................................................................75
14. TUTORIAL.......................................................................................................................................................................................77
14.1. Digital image .................................................................................................................................................................. 77
14.2. Machine vision ............................................................................................................................................................... 78
14.3. General comments on lighting ....................................................................................................................................... 78
14.4. Lighting options .............................................................................................................................................................. 79
14.5. Binarization .................................................................................................................................................................... 80
14.6. Edge / Edge Detection ................................................................................................................................................... 81
14.7. Inspection times ............................................................................................................................................................. 82
14.8. Pattern Match.................................................................................................................................................................. 82
14.9. Exposure ........................................................................................................................................................................ 83
15. GLOSSARY ..................................................................................................................................................................................... 84

Instruction Manual DataVS1 Series
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1. GENERAL INFORMATION
1.1. Conventions used in the manual
This manual has been developed to provide clear and precise instructions on how to use the DataVS1
system.
For more detailed information on the algorithms and techniques referenced in the manual, please find
symbols such as () present throughout the text which refer to Chap.14 - TUTORIAL.
Boxed text provides definitions to ensure better understanding of the specific topic.
Examples are printed in italics.
This refers to particularily interesting information.
For other significant terms, please refer to the GLOSSARY in Chapter 15.
1.2. General description
DataVS1 by Datalogic is a vision sensor (machine vision ) which is easy to use and has advanced
inspection functions which allow it to be implemented in many fields (quality control on production lines
or automatic material handling are just a few examples).
It basically works by comparing the digital image () acquired in a precise moment ("target image")
and a previously acquired reference image ("reference image").
Once the DataVS1 has been configured (using the VSC), it can function in "stand-alone" mode, that is
completely automatic.
1.3. Available models
Description
Item
Number Model Sensor Lens VSC
configurator Connection cable
Power
supply
cable
959941000 DataVS1-08-DC-K 8mm 
959941010 DataVS1-06-DC-S 6mm
959941020 DataVS1-08-DC-S 8mm
959941030 DataVS1-12-DC-S 12mm
959941050 DataVS1-16-DC-S  16mm
959941040 DataVS1-VSC 

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2. ELECTRICAL CONNECTIONS
DataVS1 sensor
M12 8 poles
(VSC connection)
pin 1: ethernet TX+
pin 2: ethernet RX+
pin 3: ethernet RX-
pin 4: not used
pin 5: 24 Vdc
pin 6: not used
pin 7: ethernet TX-
pin 8: GROUND
M12 8 poles
(power and I/O)
pin 1: white : digital input 1
pin 2: brown : 24 Vdc
pin 3: green : STROBE for external illuminator
pin 4: yellow : output 1
pin 5: grey : output 2
pin 6: pink : output 3
pin 7: blue : GROUND
pin 8: red : external trigger
VSC Configurator
M12 8-pole Ethernet: (DataVS1 connection)
pin 1: ethernet TX+
pin 2: ethernet RX+
pin 3: ethernet RX-
pin 4: not used
pin 5: 24 Vdc
pin 6: not used
pin 7: ethernet TX-
pin 8: GROUND

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3. OPERATING DISTANCES
Field range size (L x H) in mm
Operating
distance (mm) DataVS1-16-DC-S DataVS1-12-DC-S DataVS1-08-DC-x DataVS1-06-DC-S
50 - 17 x 12 25x20 42x30
80 - 25 x 20 40x30 60x41
110 - 33 x 25 55x40 80x55
140 31 x 24 45 x 35 70x50 98x69
170 39 x 29 53 x 38 85x60 118x83
200 46 x 34 60 x 50 100x70 138x92
300 70 x 53 90 x 65 145x103 201x140
400 94 x 71 121 x 82 186x132 265x189
500 118 x 89 150 x 110 236x167 330x232
600 143 x 107 185 x 130 282x232 385x270

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4. VISION SENSOR AND CONFIGURATOR: GENERAL CHARACTERISTICS
4.1. DataVS1 Vision Sensor
DataVS1 is an ultra compact vision sensor which integrates all the photoelectric elements required to
perform reliable control activities based on the comparison of two images. Once configured, the
sensor can therefore function in a "stand-alone" mode and automatically acquires an image, controls it
and then activates the outputs according to the result of the inspection.
The images seen below, highlight the main characteristics of the sensor.
The user interface is also inserted in the upper part of the sensor, consisting in 4 LED indicators and a
Teach-in button. More precisely:
LED 1: Power (green)
SELECTABLE LENSES
DIGITAL I/O POWER
VSC CONNECTION
FOCUS KNOB STURDY
HOUSING
M12 CONNECTORS
ILLUMINATOR
WITH
INTEGRATED LED

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LED 2: Digital output 2 (orange)
LED 3: Digital output 1 (orange)
LED 4: Connection to VSC configurator (green)
The Teach button functions will be explained in more detail successively (Chapter 8).
4.2. Installing the sensor
The correct position of the vision sensor is essential in order to function properly. There are various
aspects to be considered during installation, which have to be evaluated. The following chart
summarises the main aspects to consider regarding positioning.
Aspect Position suggestions
Field of view The dimension of the range acquired by the sensor varies according
to the distance from the target object to be inspected (see Chapt. 3).
For this reason, the sensor should be placed at a distance which
allows it to focus and observe the entire target object to be inspected.
Resolution On the contrary to the field range dimension concept, the resolution of
the image acquired by the sensor decreases as the distance from the
target object increases. This is because the sensor acquires an
image with 640x480 pixels. Increasing the focus range, decreases the
number of pixels per unit.
The image to the right shows better resolution compared to the one
on the right. The 640 pixels along the horizontal axis are in fact
entirely "dedicated" to writing. In the first image, however, only half of
them define the logo.
Lighting Environmental lighting generally creates a source of disturbance. It
can in fact vary, (e.g. the natural light that shines through a window
can vary in intensity throughout the day) and can therefore
compromise the results of repeated control procedures. It is therefore
640 pixel 640 pixel
480 pixel
480 pixel
TEACH-IN
BUTTON

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highly recommended to minimise the influence of environmental
lighting in the sensor focus range. Please refer to the tutorial () for
further information on industrial lighting.
Angles In order to avoid reflections on the target object, it is recommended,
where possible, to angle the sensor by a few degrees compared to
the vertical axis of the target object.
Fixing the sensor The DataVS1 must be fixed firmly to a stable support, which is not
subject to vibrations and protected from contact with any liquids. The
catalogue stocks a range of brackets which are specifically designed
to support the sensor. For instance, the diagram below shows a
sensor fitted with an assembly kit (95A901380).
The VSC configurator is an excellent instrument used to find the best position for the sensor. It allows
the installer to view the field range of the DataVS1 in real time, and adjust its position accordingly. For
this reason, it is highly recommended in difficult installation situations, to connect the sensor and the
configurator to the power supply (see paragraph 4.5) and then, according to what is viewed on the
monitor, choose the desired position.

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4.3. VSC Configurator
The VSC configurator allows the installer to quickly and easily adjust the sensor settings. Once the
DataVS1 has been connected, the installer can instantly access all the sensor functions, from the
creation of a new inspection, to modification of parameters, from the viewing of the results and
statistics to the management of digital outputs. Once the DataVS1 settings have been completed, the
configurator can be used to view the results of the current target inspection, or it can be disconnected
so that the sensor will continue to function in stand-alone mode.
The image seen below, highlights the main characteristics of the VSC (see also paragraph 5.1).
3.5'' LCD MONITOR
320x240 pixel
M12 CONNECTOR
8 INDICATOR
LEDS
8 BUTTONS

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4.4. Installing the configurator
There is a slot on the back of the VSC configurator which allows the user to connect the device to a
DIN Rail. During installation it is therefore sufficient to wedge the configurator on the rail and block it in
place using the two white locking clips.
It is also possible to install the VSC configuratore on a panel. All the accessories for this kind
of installation are included in the package.
DIN Rail
Locking clips
Slot for the
DIN Rail

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First, place the rubber seal around the body of the configurator paying attention to the shape
of it.
Then fix the configurator to the panel by using the two locking screws and the rubber caps.
Rubber seal

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4.5. Hardware connections
Connect the power and I/O cable (CS-A1-06-B-xx) inserting it into the connector identified by the
(PWR-I/O) icon.
Connect DataVS1 to the VSC using the relative connection cable (SVS-CV-VSC-xx).
PWR-I/O
Locking screws Rubber caps

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Warning
Insert the cable into the correct connector following the key indications inside the body.
After inserting the cable, turn the ring nut counter clockwise to ensure connection is completed
Never force the cable inside the connectors.
Make sure that every cable is connected to the right connector
Before disconnecting the cable, turn the ring nut clockwise as far as possible
4.6. Safety recommendations
Read the instruction manual carefully before installing the sensor and configurator.
Make sure that the product is suitable for the system that you intend to set up.
Connect the cables to the devices with the poles in the right direction.
Power up the devices following the instructions contained in the Manual.
Protect all devices against dust, dirt and humidity.
Never spill liquids on the devices
It is strictly prohibited to use DataVS1 on systems where the safety of persons and/or things are
guaranteed by the correct functioning of the device.
Always RESPECT all safety rules and regulations.
Never use the devices in environments where there is a risk of explosion.
Do not subject the devices to strong and continuous vibration.
TO VSC

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5. INSPECTION CONFIGURATION USING VSC
5.1. Introduction
The configuration of the DataVS1 vision sensor can only be performed using the VSC unit.
This chapter provides the basic procedures to follow in order to programme the sensor settings
correctly. Chapters 6 and 7 provide further details on the various configuration options and a more
complete panorama on the DataVS1 functions.
To simplify the instructions described in this manual the pressing of the buttons on the configurator
user interface will be indicated using the following diagram:
Example: Press the "Status" button
5.2. VSC user interface
The chart below provides a general overview of the user interface on the VSC configurator. Please
note however that the functions of the buttons vary according to the operating mode selected by the
user. Please consult the next chapters for further details on how the system reacts to the pressing of
the buttons.
BUTTON
ID button Main functions
Status Go to the next configuration status
Teach Saving of settings
Acquire a new reference image
Set Confirms selected option
Confirms setting value
Changes monitor mode
Esc Exit without saving
Back to previous screen
Back to the previous configuration step
Arrows Changes selected option
Movement/resizing of the ROI
Changes the parameters

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LED
LED ID Colour Meaning
Power Green VSC Configurator correctly powered up
Out 1 Orange Digital output 1 active
OUT 2 Orange Digital output 2 active
Link Green VSC Configurator correctly connected to the sensor
Set/Net Green Current status: Setup
Adjust Green Current status: Adjust
Monitor Green Current status: Monitor
System Green Current status: System
5.3. General considerations
A correct configuration based on the acquisition of a good-quality reference image is necessary to
ensure accurate inspection.
The term inspection means the set of operations the sensor performs to check the features of an
object for compliance with certain specifications.
Each individual object is compared to the reference image to determine whether it meets the
specified requirements.
For this reason, the reference image must have neat contours and clearly visible features.
Here are a few tips to facilitate correct configuration:
Decide exactly which feature of the product must be monitored
Make sure that the lighting is correct and, above all, as consistent as possible: correct image
acquisition is achieved by minimising the influence of the environmental light in the area being
monitored ()
Make sure there is good contrast between the object being monitored and the background
Carefully choose the tools (or "controls") to be used for the elaboration in order to achieve the
best results as quickly and easily as possible
Carefully adjust the control parameters
It may be useful to perform preliminary tests to detect which cases are the most difficult to
define and adjust the tolerances accordingly
Compare the results to detect any inconsistent results
5.4. Step 1 - Configuration of the camera settings and choice of the inspection tool
When the VSC configurator is powered up, the welcome screen will be displayed on the monitor.
After a few seconds from start-up, the system will automatically move into Monitor Mode and display
the focus range of the vision sensor, with the current inspection in the region of interest (ROI).

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NOTE: if no inspection is saved on the DataVS1 sensor the system will display the "Vision Tool"
menu from where the user can select the control to be used. For further details, please refer to the
paragraph marked with the symbol on Page 14. The camera settings explained in this section can
be performed at any moment in time.
To configure the inspection option it is necessary to start from Setup Mode. Press the STATUS button
twice to enter Start-up Mode. The green Set/Net LED will light up and the monitor will display the
following image.
As you can see in the image, the VSC screen is split into two main areas: the field range of the
camera and the settings and options available.
The image acquired by the sensor is displayed in the first area. If the field is out of focus, it is possible
to adjust the focus ring on the sensor (see par.4.1). The configuration options are indicated on the
right hand side of the screen. The user can use the two arrow buttons to scroll the options.
The first step when creating a new inspection rule is to enter the sensor mode settings. To modify
these settings, use the arrows to reach the CAMERA icon and then press SET.
2 x

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The settings that the user can modify will appear on the screen. To move from one setting to another,
simply press the ARROW UP/ARROW DOWN buttons.
Parameter Description Change
Internal
illuminator
Select or deselect the option to enable/disable
the illuminator fitted on the sensor.
Press the SET button to
enable/disable the option.
External
illuminator
Select or deselect the option to enable/disable
the strobe signal that the sensor can use to pilot
the external illuminator.
Press the SET button to
enable/disable the option.
Exposure time The exposure time identifies the period that the
lens remains open and allows light to reach the
CMOS mounted on the sensor. Therefore, the
longer the exposure time, the brighter the image
will be. On the other hand, increasing the
exposure times increases the risk of acquiring
blurred images where the detail being monitored
moves at a certain speed. If the images of
objects that move quickly are not very bright, it
is recommended to adjust the gain settings.
To adjust the exposure
time, move to the option
and use the RIGHT/LEFT
ARROW buttons.
Gain The gain setting allows you to adjust the
brightness of the image acquired by the sensor
by amplifying the signal transmitted by the
CMOS to the processing unit. Increasing the
gain setting, however, also increases the
disturbance on the image which decreases its
quality.
To adjust the gain setting,
move to the option and use
the RIGHT/LEFT ARROW
buttons.
Negative Select the option to enable the inversion of the
grey tones. This creates a negative image
compared to the one currently acquired by the
sensor (i.e. white turns to black and vice-versa).
Press the SET button to
enable/disable the option.
Once the camera settings have been completed, it is possible to return to the Setup menu by pressing
the TEACH button. This procedure saves all the modifications made to the settings.

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If you wish to exit the control panel without saving the modifications, simply press the ESC button.
The configurator will display a pop-up message asking the user if he wishes to save the settings.
Select NO using the ARROWS and press SET to exit without saving.
Once you have completed the camera settings, you can select the inspection tool. To select this
option, use the ARROWS on the VISION TOOL icon and press the SET button.
 Use the ARROW buttons to scroll the menu options. Press the SET button to confirm the inspection
tool to be used.
The chart given below provides a brief summary of the controls that can be selected. Please refer to
Chapter 7 for further information and details on the inspection tools.
Tool Icon Function
Brightness Calculation of the average brightness value inside an area
Contrast Calculation of the maximum contrast value inside an area
OCV Font printing test
Pattern Match Search for a pattern inside an area
Position Control of the position of details