Creates an Autodesk Connection Point (ACP) at an open port.
Access Methods
Ribbon: Insert tab 
Autodesk Connection Point panel Insert
Command entry:
plantinsertautodeskconnectionpoint
Summary
Use AutoCAD Plant 3D properties to create an Autodesk Connection Point object that another program (for example: AutoCAD MEP) can connect to.
List of Prompts
Pick an object: Select a Plant 3D object.
Pick an open point: Specify a port location.