Insteon requires Responder link records in the responder device for each Group with the Insteon address of the Controller.
The SHN Utility cannot be used to write link records in the PLM being used for powerline communication.
A responder link record contains
Group number matching group number used by the controller
ID is the Insteon address of the controller
LD1/2/3 has no meaning in a responder link record in a PLM and can be set to 00 00 00