We will begin by opening the RealPars_FunctionBlock routine.

Sheet 1 of 1 will be displayed. Select the Edit icon.

The routine will now be in edit mode and display the Accept Edits toolbar.

With Function Block programming we will use similar compare GEQ (Greater than or equal) and LEQ (Less than or equal) elements used in the ladder routine and a “Set Dominant” element, to control the Pump and Valve.