I understand now why my thought of using .157" might be off, or more realistically will be off. So now begs the question if my variable us virtually unknown as the belt could be any length how do I relate a virtually infinitely variable to 1023? Seems like every time I sort of figure out an answer 5 more questions come up. I am still trying to wrap my brain around using the float to reference .157 (Or whatever it actually should be) in relation to PPR on the encoder.