camera changes attributes after 3-4 hours

[sergueiK]

Hi.

I use BlueCOUGAR-S camera with labview 8.5 for images acquisition and evaluation real-time process (IMAQdx 3.2). Program work good though after some time (3-6 hours) camera attributes change randomly. I'm setting attributes from MAX. So I have to go back to MAX, change attributes to the right ones, and start again. How can I fix it? Maybe first step is to make read-only configuration file? Just do not understand why and how it is happens as in vi I do not use any change of the attributes...

Serguei     

[BlueCheese]

Hi Serguei,

I assume that's the GigE Vision model? The driver does not modify attributes on the camera unless your program does something that manipulates them manually (aside from loading the saved camera file when you open the camera).

If you Grab in MAX from the camera for 3-4 hours do you see the same issue? If so, I would guess you may need to talk to the camera manufacturer and see if they have any ideas.

Eric 

[sergueiK]

Hi Eric.

Thanks for advice - really I should do that test - run grab from MAX. I do not think in my program I'm calling attributes in any place exept initially when camera opens (at last I did not intend to do so or can see this in any part of program). And yes, this is GigE.

Do you think protection of camera file from changing could help?

May I change camera IP to static - maybe it will help to work more stable?

Serguei

[BlueCheese]

The camera file is only written to if either:

a) one does not yet exist when you open the camera

b) You call WriteAttributes() within your program

c) You click Save in MAX (which just calls into WriteAttributes()) 

Because of this I don't think changing the camera file to read-only would matter.

I also would be doubtful that changing the camera's IP to static would make any difference. I assume your program is not getting a "camera disconnected" type error, which would happen if the camera were to change IP settings somehow while you are connected.

Eric

[sergueiK]

Well, I do not call writeAttributes in program. I set attributes in MAX before start my program. Looks like it is camera fault. Another thing - that's started last two weeks, before it did work for almost year.Tomorrow I'm going to run grab from MAX.

Serguei