When a controller on the CAN bus is transmitting a point-to-point message (PGN 61184) to a J1939 H-Bridge module, the module will always respond back with a CAN-ID containing a destination address of "0" regardless of the controller's source address.
For example, if a controller with source address 0x55 sends the following CAN-ID to a J1939 H-Bridge with source address 0x70:
0x18EF7055
The J1939 H-Bridge module will respond by sending the following CAN-ID:
0x18EF0070
The correct CAN-ID for the response should be:
0x18EF5570