data acq, how to get started

[LWnew]

Hi,

I am new using labview and I need to create a program that would:

-send AO and DO signals

-Read AI in right channel

-Do this in a certain order.

Any help on how to get started? Just so that I would get the idea what I need to do.

NI Daqmx doesn't find my physical channels, so thats out of question? I have NI U2300 series drivers which should allow me do what I need to do?

Instrument is U2355A

[GerdW]

Hi LW,

Instrument is U2355A

This (probably) is a device from Keithley!

NI Daqmx doesn't find my physical channels, so thats out of question?

Because you don't use NI hardware.

Use the drivers supplied by Keithley!

Any help on how to get started? Just so that I would get the idea what I need to do.

Keithley should supply example VIs with their driver…

[LWnew]

Thanks for the reply. Now I finally understand the logic behind daqmx. 

Just one more question. Here is standard example measurement VI which I found. How do I choose the right channel which measures this? Not one of those blocks contained option to choose channel? Checked also "acquire and chart triggered", example and failed to find also a channel to choose there. What am I missing here?

[DG76]

The NI U2300 series drivers should support the U2355A, as per the link.

Have you added the code to a project which also has your hardware added for the VISA Resource Name? Maybe try looking in the relevant function palette for a VI which allows channel selection? Where did you find the example measurement VI, and is it for the Agilent Technologies / Keysight Technologies drivers?

[LWnew]

"Have you added the code to a project which also has your hardware added for the VISA Resource Name? "

Hmm, in those examples, I can choose VISA resource as my device. I run a few test runs and it is indeed doing something.

"Where did you find the example measurement VI"

It was in the 2300-series folder. This driver I have downloaded allready. I am just struggling to get started and to find logic behind some of these options.

For example. I found a "series digital output", example vi. I can choose those DO channels between 501 and 504, AI:s are defaults as 101 -> but these can be changed, whereas AO:s there is 201 and 202 to choose from. 

[DG76 · Accepted solution]

The examples may be for different hardware, such as the U2331A for example. If you refer to the documentation you have for the U2355A, you should be able to see the IO for your hardware in the channel selections.

[LWnew]

Oh, I was looking at totally wrong part of manual!! Sorry all and thanks for replying.