Connecting multiple thermocouple indicators to one DAQ Assistant block diagram

[aeastet]

If you are trying to wire directly to the breakout board it will not work. When I create a virtual channel it tells me that I need a SCB-68. This is a signal conditioner as I talked about yesterday. I think you are just missing the signal conditioner part. I do not believe that you wire directly into your breakout board and expect this to work.

[ColeTrain · Accepted solution]

Hello Squinn21,

After looking at your VI, it appears that you have the exact same wire going into each of your thermocouple wires.  While dynamic data types do have a certain amount of "magic" assoiated with them, they will not automatically split their value between multiple indicators.  Instead, try using a "split signals" to separate your channels.  When you're done your code should look something like this.  Hope this helps!

[MTU]

I have been following this posting and I have the same issue as the originator.   I have build the VI to match the diagram as provided, but when I attempt to split the signal from the DAQ Assistant data output, I can only wire from one terminal on the output of the splitter.    My DAQ assistant in set up for measuring 16 thermocouple channels from two SCXI 1112 boards installed into a SCXI 1000 chasis.   The A/D is accomplished using an SCXI 1600 board also installed in the Chasis.  When I run my VI only the first channel works.    I have the data terminal wired from the DAQ Assist to a Write to File Experss VI with a dynamic data wire.  When I save the data to a file, I can see that all 16 channels are about the same as the 1st (small variations) even when I have only 1 or 2 themocouples connected.   It seems as though the DAQ Assistant only outputs a single channel.

[MTU]

OK... I found in another posting that I needed to expand the splitter up and not down in order to create multiple terminals.   With that done I could wire each split from the data output of the DAQ assist to an individual numeric indicator, but they all still read the (approximate) same value!  If I raise the temperature on one thermocouple, all indicators rise.   The data written to file show the same results.   Even those channels without a thermocouple connected read and respond the same.