Control can depend on analog points, digital points, or software points. CARE provides a workspace with a sidebar of control icons to choose from and place in the workspace. See the Control Strategy Example for a typical window. The user can name and create custom control strategies, or use existing control strategy icons. To create a control strategy, the user clicks a point in the schematic, then the desired control icon to connect the two.
Software draws lines in the control work space to represent control flow.
See the Typical Control Icons box for descriptions of some of the CARE control icons. It minimizes the need for hard wiring to field-mounted switching devices. A switching table specifies the affected Excel controller outputs, determines switch status, and determines input conditions. When applicable switching conditions exist, the controller transmits the programmed signal to an output. An Exclusive OR table prevents software from transmitting more than one True condition to an output.