usb 6009 freeze

[Bart_Aerts]

Hi all,

When using the USB 6009 interface for reading out two sensors (temperature and pressure, using the Voltage they generate) and sending signals to valves, my program keeps working.

But after a while the USB module crashes.

Most of the time both input and output don't seem to work anymore. I don't get any error, it just doesn't work anymore. When I pull out the USB device and insert it again in the USB port, it works again perfectly

FYI (It happened once or twice that the outputs still worked, but I got no input from the devices.)

Does anyone have similar problems or knows how to fix this?

Thank you in advance.

Regards,

Bart

[RavensFan]

Could your PC be disabling the USB port in order to save power?

[Eric1977]

Could you post your code?

[Bart_Aerts]

All the power safe options are already off, but thank you for the tip.

[Bart_Aerts]

Here is the code.

[Eric1977]

That code is very hard to read. Look into clusters and SubVIs to help clean up that VERY large code.

Since I do not have DAQ installed, I can't be of much help other that what I mentioned above.

[Joseph_Loo]

Why don't you run Max in the test mode against your USB 6009 and find out if the problem is occurring. If it does, you might have a configuration issue with your computer or hardware problems. Also if you are running Windows xp, make sure your usb patch is installed.

[Bart_Aerts]

I'm working with Windows 7, so this can't be the problem as far as I am aware. I don't really think it is a configuration problem, because sometimes it works perfectly for a while but then suddenly without any change it will freeze...

[Joseph_Loo · Accepted solution]

The try running Max for awhile. This will indicate if there is systemic problem or not. Another issue is if you use a USB hub. Sometimes they hang up and cause the issue. NI Seems to prefer direct computer connections and not through hubs.

[Bart_Aerts]

I'm using a hub at the moment, so this can be the problem. I'll try to find a solution where I don't need this hub.

Thank you for this hint.