Angle Measurement Using Incremental Encoder and NI-9361

Hi,

My requirement is to measure angle using incremental rotary encoder. I have made the hardware wiring and tried to capture angle using NI MAX. The result showing irrelevant values(360 degree rotation in clock wise and counter clock wise showing the value of 620 and 140 respectively. The values keep changing in every 360 degree rotation. I have reset the initial angle to zero before each 360 degree rotation). Please share your thoughts regarding this problem.

Thanks