excute twice DAQmxwrite in one task

[badstone]

Hi  community,

I'm working on a signal generation, it looks like that

because of the short times, making the whole signal as a wfm is not a good idea, so I want to make it like that,

so it turns out it will write twice each cycle of the loop, but there are some error(error code -200288) , I really can't fix out.

I need ur help.
I hope I made it clearly.

Thanx for advance.

badstone

[badstone]

in the attachment is my VI.

[badstone]

the forums had been attacked since morning. And I waited the whole day.

[MelanieE]

Hi badstone,

I took a look at your VI. It can not work, since the concept of configuring and executing a DAQmx task is not respected.

Please take a look into the LabVIEW example library to understand how the DAQmx-tasks work. You can find them by choosing "Help" >> "Find examples" in an open LabVIEW window. The opening dialog contains the examples. Under "Hardware Input and Output" >> "DAQmx" >> "Analog Output" you see the example "Voltage continuos output".

Additionally you should keep in mind, that you first have to configure the task for timing, properties and the first writing of data to the module. Then you have to start the task. Otherwise there will be no output on the module.

You should also keep in mind, that you can not change the timin settings on runtime. I think a triggered solution would be a good way to implement your application.

If you have further questions about implementing your application, please mention, which LabVIEW version you use and what hardware and which driver versions you have installed.

Regards,

Melanie

[badstone · Accepted solution]

Hi Melaniee,

sorry, that I didn't make it clearly.

but I have fingured out the solution.

still thank you for help.

best regards

badstone