How can I automatically control the channel selection on the data logger

[Mike123]

I am an in-experienced use with a simple system which measures and displays temperature from 16 thermocouples. Not all 16 thermocouples are always connected at once and those that aren't are blanked off from view. I would also like to use the Advanced Data Logger VI to log the measurements but would like to have the logger only record or display the thermocouples that are connected. Un-connected channels give a signal of 1264 degrees so I can use a comparator to give a boolean output to switch them off. Can anyone please tell me how to do this.
Also, I need to expand the VI to read all 16 channels instead of the current 8. Any help would be appreciated

[nestor-sg]

Mike,

Unfortunately I couldn't get the reference of the example you mention, probably you may want to add it as an attachment so the person who decides to answer this question knows exactly which example you are describing. So for the part of making visible/invisible some of the channels I attached an example that I built for demonstrating this feature, simply open the VI and run it, if you want one of the channels or plots from the graph to be invisible just click in the push button that corresponds to it. Switch to the block diagram and review the use of property nodes, using the property of visible.

If you want to generate a support request please visit www.ni.com/ask to see the options of reaching us.

Good luck!

Nestor Sanchez
Applications Engine
er
National Instruments