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NI 9218/NI 9983F: Error -200077 when trying to measure 4-20mA current

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I'm trying to measure the output current of a sensor. It is between 4mA and 20mA.

I'm using the NI cDAQ-9171 with the NI 9218 Unit and an additional shunt resistor, NI 9983F (for +- 20mA current measurement):

 

In the "Start Task" vi does an error occur:

Error -200077 at DAQmx Start Task.vi: 7220001

 

Property: AI.Max
Requested Value: 20,0e-3
Value must be bigger than: -6,644518e-3
Value must be smaller than: 6,644518e-3

 

Device: cDAQ1Mod1

Task-Name: _unnamedTask<44>

 

 

I tried several examples made by NI or other users but nothing worked!

 

My current measurement vi.My current measurement vi.

 

Thank you in advance!

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Accepted by topic author the_dani

Hello the_dani,

 

which driver you are using with DAQmx 16.1 and newer this should not happen, with an older driver the worlkaround is to configure the adapter to NI 9983D.

best regards
Alexander
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Thank you, I updated DAQmx and it works!

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