The Mini8(tm) din-rail mount controller and data acquisition unit is a high-stability 4-loop or 8-loop PID controller unit or a 32-input data acquisition unit. It is designed to integrate with programmable logic controllers, intelligent I/O and other supervisory control and monitoring systems. The controller has four plug-in I/O slots, which can accommodate a variety of I/O modules, and its feature set enables it to handle a wide range of applications, from simple multiloop and data acquisition up to and including setpoint programming, mathematical and logical operations and complex strategies such as cascade and ratio loops.