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Error in LabVIEW code collecting Analog input signals from thermocouples and LVDTs

Hi, I am writing a program in LabVIEW 2018. The purpose is to get 25 thermocouple temperature through 25 analog inputs, where 24 are T type thermocouples and 1 is S type. We have 2 LVDTs, where we get analog voltage inputs. Sampling rate is 55 Hz and Total number of samples are 1650. I tried to use while loop for my program. After running the program, the data will be saved in an excel file with 28 columns (25 for thermocouples, 2 for LVDTs and 1 for sampling time).

 

After running the program I am getting following error: -50103 occurred at DAQmx Control Task.vi:3900034. 

Possible reason(s):

The specified resource is reserved. The operation could not be completed as specified.

Task Name: _unnamedTask (for each NiDAQAssist)

 

Could someone please help me? I am attaching the program VI here. Thank you.

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