I am trying to program a PID control loop that will use a blower to maintain a constant temperature. I am using type K thermocouples, which have a very large range (I cap my range off at 1100C, starting at 0). I have set up my code using temperature as the PV to the PID. I take this number and convert it to % using the EGU to % VI and then feed that into PV. I take my set point and do the same. I also have clusters for my PID gains and my PID range (which i had set from 0 to 100, assuming percentage). When I run this program, I can watch numbers go into the PID, but then it spits out a 0% output. I am running at very low temperatures to start and am wondering if this is part of my problem? Perhaps it is as simple as having the wrong gains. Also, when I change the Kc value, for example, on my front panel, run the program, and then open the PID controller in my block diagram, the Kc value there remains unchanged. Is this normal? I have attached my very basic code for reference. Thank you!