Analog output (traditional daq) of data chancing during loop of generation

[massi1970]

Hi people.

I've the necessity of change my data output during the generation. In particular I've to stop the generation after tha data smooth to zero after push a stop button, but I previous don't know when I'll stop the process.

So I don't use the generation all at once, but I use a buffered generation in a loop and in the same loop I put a packet of data ( a vector of 100 elements) in the buffer, then the program generates in daq (at 100 sample/sec).

Even if in the first step of loop I set the "AO config" (whit buffer to 100) and put 100 or more than 100 (in particular 200 or 400) elements in the buffer to write , writing data with "AO write" followed by "AO start" and in the other steps I write ("AO write") 100 elements, I obtain always this error:

"The on-going transfer has been stopped. This is to prevent regeneration for output operations, or to reallocate resources for input operations."

I'm sure of low rate generation for my hardware so I don't understand where changing the vi to obtain my target.

Have any idea.

Thanks.

Massimiliano

In attachment the vi