Cognex In-Sight 2000 Installation guide

Cognex In-Sight 2000 Training
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Table of Contents
Introduction: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Connecting to the IS2000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Set Up Image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Poker Chip Lab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Locate Part . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Inspect Part . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Filmstrip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Save Job . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Run Job . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Logic Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

1
Introduction:
The In-Sight 2000 is a vision sensor, capable of providing a pass/fail output from the inspection of a
part. It is easier to use than a full vision system but has capabilities beyond a basic photosensor or
proximity sensor, or even an array of sensors. It uses the same software used for programming a
Cognex In-Sight vision system, so you don’t need to learn a separate software to configure it.
You will learn about the In-Sight 2000, its components, interchangeable parts, configuring an IP
address, connecting to the IS2000 and programming an inspection. This document will also serve
as a reference for the primary functionality of EasyBuilder and the stepwise process for building an
inspection.
In the first lab you will be guided in each step, which will be explained in detail. After that you can
use your own parts (if you brought some) to create an inspection for your application or use our
parts and create an inspection according to set criteria.

2
Connecting to the IS2000
Once you have installed the software you can communicate to the In-Sight 2000. As it
communicates over Ethernet TCP/IP you will need to provide it with an IP address so that it will
communicate to your computer. As a default all In-Sight systems are configured as DHCP (Dynamic
Host Configuration Protocol) so out of the box it is expecting to be “served” an IP address. If your
computer does not have DHCP Server software on it (most computers don’t) then you need to
assign the In-Sight 2000 and your computer static IP addresses. This section will show you how to
do that. Launch In-Sight Explorer version 5.2.3 from the icon on your desk top if it is not already
open. When it opens you will see at the left side a pane labeled Application Steps and the first step
is Get Connected; place your cursor on this step and click the mouse to select it (if it is not already
highlighted) (Fig. 1).
Fig. 1: Application Steps - Get Connected

3
When this step is selected the pane just below it will appear as seen in Fig. 2. Any In-Sight system
that is on the same subnet as the computer will appear here. If you have obtained an offline
programming key, the name of your computer will appear in this pane followed by local emulator.
This means that you can work with the software without being connected to an In-Sight vision
system.
The Connect button will establish a connection to the system selected in the list. The Disconnect
button will cause the software to be disconnected from the system to which it is currently connected.
The Refresh button will refresh the list of systems in the left side of the pane that are currently on the
same subnet as the computer. The Add button will launch a dialog to assign an IP address to a
system not on the same subnet as the computer. The Emulator button allows you to select which
system you would like to emulate if using the offline programming functionality.
Click the Add button to launch the Add Sensor dialog (Fig. 3 on next page)..
Fig. 2: Connected Systems

4
The connected In-Sight 2000 should have been discovered and displayed in the list of devices.
Click on the line that shows the unit to select it. From this dialog you can change the name of the
unit if you desire. Notice that at this point the setting of the IP address is selected as DHCP. Click
on the radio button next to Use The Following Network Settings. When you do this the entry fields
and button below it become active (no longer grayed out). If you know the subnet of your computer
and what address you would like to use and the subnet mask you can enter those into the
appropriate fields. An easier method is to click the Copy PC Network Settings button. This will use
the settings of the Ethernet network adapter in your computer to assign an appropriate IP address
and the subnet mask to your In-Sight 2000. This assumes that your computers Ethernet network
adapter is not set to DHCP.
From this dialog you can also reset the administrative logon password (if it had been set and
forgotten) and reset the entire system to factory defaults; all system settings except for the IP
address will be reset.
Fig. 3: Add Sensor/Device to Network

5
Click Apply at the bottom of the dialog; when you do this another dialog (Fig. 4) will appear, warning
you of the changes about to take place. Click OK at the bottom of the message box to continue with
changing the IP Address. When the process has finished another message box will appear noting
the success of the change; click OK at the bottom of this dialog as well. Click Close at the bottom of
the Add Sensor/Device to Network dialog.
When the dialog closes you should now see your In-Sight 2000 listed in the pane showing In-Sight
systems on your subnet (Fig. 2 on page 3). Click on it to select it and click the Connect button. You
will see the software appearance change while attempting to connect to the In-Sight 2000 and after
several seconds you will then see that it is connected. You are ready to move to the next
application step.
Fig. 4: Add Sensor Message Box

6
Set Up Image
Click on the Set Up Image application step button (Fig 5). When you do this the pane at the bottom
will change to show the image acquisition settings.
Fig 5: Application Steps - Set Up Image
Fig 6: Image Acquisition Settings

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There are multiple sections to this pane which will be explained in more detail.
The first section (Fig. 7) is for image acquisition. Pressing the Trigger button will acquire a single
image. Pressing the Live Video button will acquire images as fast as possible without doing any
processing or inspection of the image. Clicking the Load Images from PC button will open a
navigation dialog to allow navigation to a folder that contains images. Typically you would want
these to be images saved from your system as they will have been illuminated by your system in a
manner you intended.
The next section (Fig. 8) selects how the system will be triggered when inspections are running.
There are four selections for trigger type. Camera is the setting if the dedicated trigger input is being
used to acquire images at runtime. The Delay control is active in this mode and allows for a delay
between the receipt of the trigger signal and the start of acquisition; Interval is disabled. Continuous
will capture images as fast as possible while performing the inspection, setting the I/O and
performing communications. The Interval control sets a time between acquisitions to reduce the
possibility of an acquisition being lost. The Delay control is disabled for this trigger type. The
Manual trigger type allows the In-Sight 2000 to be triggered from In-Sight Explorer software. Both
Delay and Interval are disabled for this type. Selecting Real Time Ethernet allows triggering
via an Ethernet industrial protocol.
Fig. 7: Acquire/Load Image
Fig. 8: Trigger

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The next section (Fig. 9) configures the intensity of the light and the exposure settings.
First the exposure time can be set to a defined exposure time (Manual Exposure) or to a variable
exposure time (Auto Exposure). The latter has two ways of calculating the exposure time and these
are defined in the help files.
Target Brightness is used when Auto Exposure is selected and sets a desired average
brightness level for the resulting image; the range is from 0 to 100.
The Exposure Region sets the region of the image over which the calculated automatic exposure
levels are based.
The Light Intensity control sets the relative percentage of output from the integrated light; the range
is from 0 to 100.
The Exposure (msec) control sets the exposure time in milliseconds. This setting and the Light
Intensity setting control the image brightness when using Manual Exposure.
The Optimal Exposure control computes an exposure time based on the Light Intensity and Target
Brightness settings when using Manual Exposure.
The Light Control Mode control sets the integrated light to either be strobed on during the exposure
time or disables the integrated light.
When deciding on settings it is typically advised that the brightest area of the image be about ninety
percent of full value. When an area is saturated (at full white value) information about the size of
dark objects in that region is less accurate and typically provides no advantage in the efficacy of the
tools. Since each part and application are different this may not always be possible, so this is a
general guideline.
Fig 9: Light and Exposure Settings

9
The final section of this pane controls the size of the image that is captured (Fig. 10). The upper
control in this section will set the number of rows that are captured in each image. This can be
useful if the part does not move much in the field of view and cycle time must be reduced. When
only a portion of the rows are captured, the acquisition time is reduced which decreases the cycle
time.
The other control, Image Magnification Mode reduces the size of the field of view by fifty percent so
that a smaller portion of what was in the field of view is imaged, while retaining the resolution of the
image. It provides the effect of doubling the focal length of the lens. The image on the left (Fig. 11
left) shows the image with an 8mm focal length lens and a working distance of six inches. The
image on the right (Fig. 11 right) shows the same setup with Image Magnification Mode enabled.
Both images are 640 by 480 pixels.
Fig. 10: Image Size
Fig. 11: Image Magnification Mode

10
Poker Chip Lab
The first lab uses Cognex poker chips; each lab station should have a few of these chips. When
developing an inspection you would follow the Application Steps from top to bottom to create a
complete, fully functional inspection.
You have already finished the Get Connected step and learned about the Set Up Image step, so
now you can complete this step for your part. Set up your image to appear similar to the left image
in Fig. 11 with the same side facing up. In setting the exposure time for this part you may notice that
the area in the center of the chip is a highly reflective material. Adjusting the exposure settings for
this part such that the brightest area is at about ninety percent of full value leaves the image a bit
darker than desired. For this lab you will use the Manual Exposure mode, set the Target Brightness
to 50 and the Light Intensity to 70 and then click the Compute button. Your exposure time should
probably be around 0.2 to 0.3 milliseconds but it may vary more depending on the ambient light.
The next Application Step is the Locate Part step; click on this step (Fig. 12).
Fig 12: Application Steps - Locate Part

11
When you click on this step the pane at the bottom will change to expose a list of tools (Fig. 13) that
can be used to locate your part. In your system there are four tools that can be used for locating a
part; in the other two models (lower cost and lower capability) of In-Sight 2000 only the Pattern tool
is available. To the right of the list is a description of what the tool does and how to proceed adding
it to your inspection.
For this lab you will use the Pattern tool so click on Pattern to select it and then click the Add button
at the top right of this list. When you do this two rectangles will appear on the image; these are the
Model region and the Search region of the Pattern tool (Fig. 14 on next page).
Fig. 13: Locate Part Tool List

12
The Model region appears pink, which signifies it is selected for editing. If the cursor is placed inside
the rectangle it will appear as a white cross with arrowheads at each point. If you click and hold the
left mouse button, the rectangle can be dragged to its desired location. If you place the cursor on an
edge or a corner of the rectangle it will appear as a white line with arrowheads at each end. If you
click and hold the left mouse button, the rectangle can be resized in one direction (if on a side) or in
two directions (if on a corner) by dragging. At the middle of the bottom edge of the rectangle is an
arc with an arrowhead at one end. By placing the cursor over this graphic it will appear as a hand
with the index finger extended. When the cursor appears as the hand, click and hold the left mouse
button to rotate the region by dragging it one way or the other. Move, resize and rotate (if
necessary) the Model region to match the image on the next page (Fig. 15).
Fig. 14: Locate Part - Pattern Tool

13
Placing the Model region close around the graphic on the chip allows defining edges to be trained
while disregarding a significant amount of the background that could also contain significant
variations. When choosing a pattern to use as a fixturing point you want something that would
normally be present, is fairly unique and not too symmetrical, so that orientation of the found pattern
is consistent and repeatable. The graphic that has been chosen meets those criteria.
Fig. 15: Locate Part - Trained Model

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Placing your cursor on the edge of the Search region and clicking the left mouse button will make it
appear pink and the Model region will appear green (Fig. 16). At this point you could move and
resize the Search region as you did with the Model region; the size and location of the Search region
would be determined by the expected range of movement of the part in the field of view. Since you
will be moving this part in the field of view by hand you can leave the Search region at its default
size and location.
Fig. 16: Locate Part - Select Search Region

15
When the Model and Search regions have been set as desired, click the OK button in the Directions
pane (Fig. 17) at the bottom of the window to accept the changes and finish adding the tool. When
you click OK the tool will appear in the Results tab of the palette (Fig. 18) on the right side of the
window and the Edit Tool pane (Fig. 19), containing settings for the tool, will appear in the bottom of
the window.
Fig. 17: Locate Part - Accept Regions
Fig. 18: Palette - Results Tab
Fig. 19: Edit Tool Pane

16
On the right side of the Edit Tool pane are several entry fields and a control to retrain the Model
should that be necessary. First you can assign a Name to the tool; while this is not required, as the
software gives it a default name, it is a good practice to provide a descriptive name. This allows
someone who is looking at the program to have an understanding of the function of this tool in the
inspection. Consider changing the Name of this tool to LocatePart.
The next control allows you to select if the tool is Enabled. The choices in this drop list are Enabled,
Disabled, and Input 0. Normally the tools you add to the inspection would be enabled as you
need them to perform some function in the inspection. So why would you disable a tool? This can
be useful in troubleshooting the inspection, to determine how a specific tool might be affecting the
overall result. Selecting Input 0 would enable the tool only when Input 0 is active. Perhaps you
have two similar parts with one feature difference and a specific tool or tools are only needed for
inspection of this different feature. This allows you to create one program that will inspect both parts
and only enable the extra tool or tools to inspect the part with the feature difference.
There is also an entry field for providing a Description of the tool’s function. Again this is not
required but documenting your work helps others understand what you have done and perhaps
helps you to remember why this tool was part of the inspection, when you look at it for the first time
six months after you originally created the program. Develop the habit of documenting your work.
On the far right side of the pane is an image of your Model with a button below it labeled Model
Region. If you decide at some later point that you need to retrain the Model, you can click
this button. When you do this the Model region will appear in the image and can be edited in the
manner used when the tool was created. The button label will also change to Train, so that when
you finish editing the region you again click the button and the new model will be accepted; the
image of the new model will replace the image of the old model.
With the exception of the ability to retrain a Model these controls will be available on all of the tools.
Fig. 20: Pattern Tool Settings - Name and Model Region