Timeout in middle of the test - Hex 0xBFFF0015

[Ott]

Hi,

PC with Window 7 and GPIB-USB-HS to GT9000s (Gigatronics Signal Generator) are used for the test. The program is used to change the setup and do some local process then change the setup again - power/frequency/PM. It always stops after around one and half hours operating - aroun d 800 times talk to the device.

From some website, it is mentioned that the fast PC with slow device causing it. Some suggested to change the rate - I am not sure how to change the rate.

Any suggestion for solving it?

Thanks,

Ott

[SteveChandler]

Can you post the code?

[Ott]

Here you are... Here is the code with a loop keep changing the parameters.

Thanks,

Ott

[SteveChandler]

There are no loops. You said after about 800 iterations. You are not using run continuously are you? But probably this is a subVI that is being called in a loop?

Generaly you open and configure outside of a loop, execute some commands inside of a loop, and close the device after the loop executes. You would typically do this using a state machine with an open, execute and close state.

But sometimes serial devices can just be finicky. I have one that just times out every once in a while. What I do to fix it is check for the timeout error and try again. If there were five errors in a row then I return the error.

Edit: And if this is a subVI being called in a loop, you should get rid of the Simple Error Handler. That only belongs in top level VIs and not subVIs.

[Ott]

Thanks for your comments. but the issue is if it happens, the only way I could talk to the device again is to power cycle it.

I don't think the loop could cause it.

Any suggestion?

Thanks,

Ott

[Ott · Accepted solution]

It's resolved. I removed the turn off before set and turn on after process, and seperated the command in its individual loop instead of setting once in the inner loop.

Thanks,

Ott