How-To Troubleshoot: DVT 554 Camera Vision Sensor (Cognex Support) with Software


Hello and welcome to PDFSupply.com. Today
we’re going to be testing a DVT 554 camera. I have here a DVT camera 554 powered up. As
you can see, I’ve already got a lens on it. Here’s the front of the camera and here’s
the association of my plugs. This is my 24-volt going to my breakout board and then my Ethernet,
coming from the Ethernet switch off of the computer and through our Ethernet network.
I always keep other lenses on hand. This happens to be a 100mm lens. There’s a couple things
I wanted to show you about that. You may test a camera that didn’t come with a lens. You
may have a few lenses to choose from and you’re going to get different visual results with
different lenses. I try to pick one that is suited for the camera so that when I can zoom
in on something I can see it very clearly, just to make sure that the lens is working
perfectly, that the DVT camera itself, is working perfectly.
Another thing, and I’m not sure if you guys are able to see this. When you look through
you can see through the lens because the aperture is open. The aperture is controlled by a dial,
usually on the bottom of the lens. It says C for closed, O for open. As you turn it,
the aperture opens and closes and what it does is it allows a different amount of light
in. If it’s closed there’s no light going in; if it’s open there’s a tremendous amount
of light going in. Sometimes you have to kind of meet in the middle. What you do want to
do is make sure it’s open enough so that you can get a picture. If it’s closed too much,
especially on specific cameras, and it’s not letting enough light in, you may think that
the camera’s not working. Always check the [00:02:00] aperture before you place it onto
the lens itself. A couple other things that you’re going to
need. Of course, I pointed out before the DVT isolated bob. This is a breakout board.
It’s being powered currently by a 24-volt power supply that comes with the breakout
board. There’s inputs and outputs on the board. The lead on the other end of this is going
to my camera. This would be a DVT CVL-10. The 10 refers to the length of the cable,
10 feet of cable. They come in CVL-25; that would be 25 feet of cable. If you have a different
cable than the one I’m using doesn’t necessarily mean it’s a different cable; it just means
it’s a different length, depending on your application, where the breakout board is in
relation to the camera itself. Please keep that in mind, as well.
I’m going to be using DVD Intellect 1.5.1 for the test. It’s a late version and it’s
pretty easy to use, pretty easy to test the camera. What I’ve done is I’ve powered up
the camera and if you’re looking at the Intellect 1.5.1 software on your screen you can see
where my cursor is right now, where the arrow is. I’m pointing at the DVT 554. This is the
network explorer. It tells you what cameras are on the network and the status that they’re
in currently, the IP address and so forth. What I want to do in this particular case
is go to Up or anywhere on this grey bar and right-click, and click Connect. We’re going
to connect up to this camera. Let me back up for a second. If you look over
to where my arrow is right now it says Application. The application means the application that
has been stored on the [00:04:00] DVT 554 and hat is Intellect Version 1.5.0.
I’m going to connect up to it. Select Connect right there. The first thing is it’s going
to give me an image display. This Cognex particular DVT 554 camera is a black-and-white camera.
For your information the 554 resolution is the high-resolution camera. It’s 1280/1024,
so 1280 x 1024 is the resolution. It’s firmware memory storage capacity is 16 MB and the acquisition
rate, that’s how many pictures it takes per second, is 8 frames per second. Please keep
that in mind if this is a camera that you’re considering buying, if it will meet your standards.
I’m going to play with the aperture a little bit. As you can see, the focus of the photo
I’m getting right now is increasing. The light intensity is increasing. There’s too much
and there’s maybe a little too little and there’s where it should be, about there. From
there I can zoom in back and forth. Of course, I’m holding the camera in my hand so it makes
it difficult to keep a perfect following distance here, but I can clearly see that my camera’s
picture is actually perfect. That’s usually something that’s either going to work or not
work. It won’t be blurry unless perhaps there’s some solution that has gotten on the lens
itself. I’m happy with the fact that the display works perfectly.
What I’m going to do is I’m going to reduce the display, leave this area open. I’m going
to go to System and I’m going to go to Digital I/O. The reason I’m doing that is I want to
check the capability of the inputs and outputs [00:06:00] related to this camera.
Click on Digital I/O and it’s going to give me a few choices here: DVT, Ethernet, I/O,
Virtual I/O. We’re going to pick Physical I/O. We’re actually going to physically test
these inputs and outputs. We’re going to open this up.
Here’s my trigger values, pins 1 through 8, and they’re all currently at a 0. What I have
is a short program that I’ve gotten set up that if you send in a camera to be tested
it would be going through this test procedure. What it does is it allows me to test the outputs.
If you can see right now, the outputs are blinking. It’s good that they’re blinking
there but more importantly, on the software itself I want to see these values change from
a 0 to a 1. If all of these values change from a zero to a one it’s telling me that
all of the pin-outs 1 through 8 are in working condition. There’s none of them that are left
as a 0. They’re all working; all 1 through 8 are working. I’m satisfied with that.
The next thing I want to do is check the inputs. There’ll be an actual physical contact here
in order to test these inputs. Again, I have a program that’s set up just for the inputs.
We’re going to open up here. What I need for this is going to be a probe. [00:08:00]
I have a probe here. These are the two ends of the probe. One of them connects to my positive
lead, which in this particular case is white. I’m going to use that to touch each and every
one of the pins. You will see them on the software change to a 1. Don’t just go by the
breakout board. Make sure you’re looking at the software and that the software agrees
that these inputs are, in fact, working. We saw on the software that they all changed
from a 0 to a 1 and that satisfies that part of the test.
That pretty much concludes the test. I have a camera that was able to take the Intellect
1.5.1 software so I know it has storage capability and it’s able to be erased if it needs to
be. That’s how I was able to load the software on there. I know that the lens works perfectly
and I also know that all of my inputs and outputs are working. That’s just a basic,
quick test to make sure that the camera’s working and functioning properly.
If, for instance, the camera did not connect … In the beginning of the video the first
thing we did is we right-clicked on the camera itself under the network explorer. I’m back
to that screen now. We right-clicked and we asked it to connect. If it didn’t connect,
and it was complaining that it’s not able to obtain an IP address, either there is a
problem with your Ethernet connections, your Ethernet port connections aren’t able to obtain
an Ethernet IP address, or the fact that the Ethernet IP card in the camera’s not working.
I do come across that every now and then with a camera that’s troubled.
This is something that we offer in exchange programs here at PDF Supply. If that’s something
that [00:10:00] you’re interested in or that you’d like to hear more about, please see
us at PDFSupply.com. Thank you.

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