3 load cells using NI-9219

[Johnnielsen]

Hello

I’m going to use 3 strain gage based load cells to measure force.

I’m using a cDAQ-9174 with a NI-9219 module, connected through USB to a PC.

Will I be able to get readings from the 3 load cells simultaneously?

I have tried using the online guides, and applying them to three different channels, but I get the following error:

Error -50103: The specified resource is reserved.

[KateB]

Yes, you can acquire them simultaneously within the same task. I guess that you separate task for each channel and face the problem. You should use only one task and read from all channels.

[Johnnielsen]

Will I be able to get three different data sets then? And how, since when i generate the example code, I only get one data indicator.

Thank you in advance.

[A.E.M]

Hi John Nielsen.

You should be able to get data from several channels on the same module, even with different Strain gage information. You can add multiple 'DAQmx Create Virtual Channel' in cascade, which will also force the measurement to execute at the same sample rate.

This will give you a 2D array of doubles. You can look at the individuals datasets by using 'Index Array'.

[Johnnielsen]

Thank you for your help.. I'll will try these solutions. 🙂