USB drive disconnect

[Vincent_Leysen]

Hi everybody

Since I am back in Belgium and with all the info from the forum I just did some more tests.

When I add a timed loop of 5 seconds the connection breaks off only after more than 15 minutes. If this occurs I can just stop the pomp of the Testo and start the VI again. I don't have to plug the USB in and out.

Maybe this is useful info. I have the impression that in the timed loop the some data clash occurs and as a result of this the communication breaks of.

Thanks in advance

Greets

Vincent

[ThiCop]

Hello Vincent,

Can you try one thing?

Go into your timed loop and uncheck "Maintain Original Phase".

I would like to see if this might be the culprit.

[Vincent_Leysen]

Hi ThiCop

Just gave it a go.

It dropped out the connection, I Stopped the pump of the Testo started the pump again and I was able to run the VI again as long as I like. I just tried it with the loop back on 1 sec. It lost connection but much quicker, I stopped the pump and the connection was OK for as long as I like. It looks like once it is in the timed loop LabView is only able to receive a number of times data.

Greets

Vincent

[ThiCop]

Hello Vincent,

I'm a bit confused about what you mean with this sentence:

"I stopped the pump and the connection was OK for as long as I like."

[Vincent_Leysen]

Hi ThiCop

1. start pump on Testo
2. Start LabView 
3. connection crashed
4. stop pump on Testo
5. connection was established again in good order
6. vi run for a very long time

I did not stop the vi. I just keep the vi running and the data exchange started again after I stopped the pump and started again.

Thanks!!!!

Greets

Vincent

[ThiCop]

Hello Vincent,

Can you send me the latest version of the VI that produces this result?

When you say "connection was established again in good order", what does this include?

[Vincent_Leysen]

Hi ThiCop

On the site of Testo I have downloaded the onlinereader of Testo. This shows also the measured data and it gives an indication if there is a Testo device connected to the computer. Here I can see if he finds a the testo and in other words establish a good connection. I can see on the online reader than when it breaks off the connection an when I stop the pump by hand I can see the connection restoring.

Do you have any idea of tests I can perform or alternatives for the loop to read out the data?

Greets

Vincent

[ThiCop]

Hello Vincent,

So you always run both pieces of software (LabVIEW and the online reader) at the same time?

If this is the case, then this could be a possible reason for the experienced issues.

[Vincent_Leysen]

Hi Thierry

I tried this for a few times. Still the same happened. I am desperate for the moment. Do you see an other way how i can call this function or do the same?

Greets

Vincent

[ThiCop]

Hello Vincent,

I have been Out of the Office (in Hungary) or sick at home the last week.

This thread is getting quite big so I would like to ask you if you can summarize what you have tested in the last week and a half.
Please also include the latest version of your code.