software trigger vision builder

[VPS]

Hello,

I am using a smart camera with vision builder 3.6

For the moment I have a very simple setup: a loop where I first acquire an image, then write to a local disk using ftp and finally a delay of a few seconds, which defines the rate of image acquisition.

I would like to be able to define the rate of image acquisition using shared variables (so I can define this from a LabVIEW program). First I thought to change the delay but I did not find how to link the value of a variable to the delay step.  My next thought was to have a software trigger. This would be the best solution but again here I could not find how to implement this in vision builder (in the trigger section of the image acquisition step I could only find hardware trigger options). 

So my question is how to implement a software trigger on a smart camera running vision builder.

Thanks!

Ture

[ChristopheC]

Hi,

Trying to change the delay using a shared variable was a good idea. We'll probably add in a future version the possibility of setting the delay to a previous measurement.

I am afraid that for the moment, the  only solution to do that is using the state diagram and have a first state that polls and detects the change in your shared variable and transition to the next state only when your variable is incremented. The acquisition occurs in a second state.

See attached example writtten in Vision Builder AI 3.6 and LabVIEW 8.5.1.

Hope this helps.

Best regards,

Christophe