PID Controller - ECP Rectilinear Model 210

Hi, everyone! I am working on a PID controller for a one-cart system (ECP Model 210) in LabView. However, I don't think I am using the PID vi correctly. I am trying to have the position of the cart changed by the setpoint in the PID but the system just oscillates. If anyone can offer some advice, I would greatly appreciate it.

Thanks!