This module controls a discrete heating device within a zone control application. The module accepts an input mode, a process variable, a setpoint, and configuration information. The module outputs the representative percent command and a control status. The outputs are sent to an MSC module that provides the control for the actual binary outputs. This module also incorporates tracking the overridden value of the actual output object (AO, PAO). The module resets the PIDs to default tuning parameters if the Reset PID Tuning input is not Normal.
This module provides EWMA diagnostic values calculated by the PID. Controllers have the ability to collect data about their inputs, outputs, and internally calculated variables. Inside the controller, the EWMA minimizes memory requirements, reduces communication traffic, and provides an easy way to analyze collected data. See EWMA Diagnostics in the Commissioning a System section for more information.