I am using DAQ Assistant to read linear displacement from a NI 9401 in a cDAQ 9178 chassis. On some ocassions, when I load the VI and start logging the position before there is any movement, the NI 9401 outputs values as high as 4,294,967,241. It slowly counts down and then when there is actual movement, the NI 9401starts counting the position from 0. On other ocassions, it starts normally from a position of 0. Does anyone know what this large value refers to and why it is being output?
↧