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

[the_dani]

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.

Thank you in advance!

[Duffy2007 · Accepted solution]

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.

[the_dani]

Thank you, I updated DAQmx and it works!