Data Acquisition Program Guidance

[Rhys_CKTC]

Hi, I am trying to develop a data acquisition program and would like some guidance.

Scenario: Test engineer looks at live data being read from thermocouples using a CDAQ system. When he is happy that the data is settled, he will press a button which will log one point of data from each channel on the thermocouple card of the CDAQ. Currently I am using one 16 channel card but this will be expanded to use 3 x 16 channel card.

Current progress, I can view the live data on a chart and I have a button which takes me into another state of a state machine to log oe set point. I am not sure whether I should place these logged set points into an array with a new row for each set point or save them straight into a file.

Could you suggest which would be the better option and how to go about doing this. I have tried several methods to get the set points into a new row of an array but failed.

Maybe my whole program structure is not suitable to what i want to do.

Attached is my VI of current progress. See DEV1.7.vi for the latest version.

Thank  you in advance.

Rhys

[JÞB]

Zip the structure that conains your project (or a source distribution of your project) and attach it.  The .lvproj file only contains the names of the expected vis and controls etc... We get nothing else to look at.

[Rhys_CKTC]

Hi,

Here are the files

Cheers

Rhys

[RTSLVU]

You just need to add a shift register and a build array.

I don't use DAQmx so I don't know why it's output is a two dimensional array but you get the idea.

Every time you press the button and leave the logging loop the output will be appended to the array.