Interference making cRIO inoperable

[AWillen]

Our cRIO 9075 or one of the two digital IO NI 9401's are picking up interference and rendering the VI inoperable. According to the VI output, there is a mechanical limit switch that is activated however this does not actually occur. We've run this test 50 times before without issue. Could a software update be the reason? Are there wireless features on the 9075 that could be causing this problem that could be disabled?

The 9075 is hardwired to a computer via an Ethernet cable. The cRIO is grounded. We are running labview 2012 SP 1 and the NI-RIO is version 12.0. 

[Esteban.R]

Hi AWillen

I am not sure what you mean with picking up interference and rendering the VI operable.

Do you get an error on the code?

Do you get unexpected values?

The 9401 is being used for digital inputs and/or digital outputs?

If you only use digital inputs do you get the same problem?

If you swap the modules do you get the same error?

If you change the module to another slot on the same chassis do you get the same error?

Regards

Esteban R.