Ports and connections

Elements in a model are connected through any number of ports, which are defined by the element template. A port can be defined as an input port, an output port, or as an undirected port. The port defines how many connections can be made and the types of elements that can be connected.

In analyses, directed ports (input and output ports) represent positive material flow and are used by connections. Undirected ports are used by attachments of meters and analyzers. The most common type of attachment in a model is a measurement or meter attached to a flow element.

A connection represents the link between the ports of two elements. The ports, which are defined by the element template, can be defined as input ports, output ports, or undirected ports.