Equipment modules used in a continuous control application can be based on the following algorithm types: function block, sequential function chart, state-driven, and command-driven. State-driven and command-driven algorithms require a named set. The following graphic shows the construction of the named set used on the TOTALIZER equipment module example.
You create equipment modules in the same way you create control modules, selecting the equipment module type and the command-driven algorithm type. Initially the equipment module looks like this:
The system creates SFC-based composite blocks for each of the named set states with the exception of the 255 state. The user must develop the SFC logic for each of the composite blocks to control the valves and reset the flow calculation.