|An instance of
this function block type displays the process variable (PV)
and output (OUT), and provides user input of the set point (SP),
for a closed-loop controller. The values of these variables are
treated as percent of full scale.
The LABEL input provides a top-centered label for the faceplate (TANK LEVEL in this example).
The AUTO output provides for user control of the controller mode via the Auto/Manual radio buttons.