If you want to use Ramarine SeatalkNG in combination with equipment from other manufacturers using what Raymarine call Devicenet.
Is i possible to build a backbone where one end is SeatalkNG
(5 Way Connector, Backbone Terminator) the other end is connected to a devicenet backbone?
Are there any ready made cables for this or would this cable be need to be built by using a SeatalkNG backbone with a field installable plug in the other end?
Maretron and Raymarine each have a variety of such cables.
If you choose the Maretron cabling products as your boat backbone, Maretron provides all the conversion cables to all the other manufacturers so that you never have to make a cable. When the cable end can't fit through a tight space, they also have a very workable field install-able connector.
They also have different backbone cable sizes, depending on how many devices / how much current your network will draw.