I get the difference between %d and %u as I indicated in my last sentence, but actually, according to the help document, an ANALOG_INPUT is "treated as signed or unsigned values inside of a SIMPL+ program depending on the operators or functions being used." Maybe it's printing a "d" because it's interpreting the ANALOG_INPUT as signed somehow and it's printing its type instead of its value? I dunno, just spitballing and just curious if %d would work in your code. If it does work, I'd need someone smarter than me to explain why.
