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Yamaha command link to existing Furuno NMEA 2000 (CanBus) Network

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  • Yamaha command link to existing Furuno NMEA 2000 (CanBus) Network

    Hi, I have a NMEA 2000 (CanBus) Network for my Furuno system. There is a backbone cable with resistors on each end; a power source ("dropline Tee") where I can have power going to both directions from the Tee, or only 1 direction; 3 TZT14 MFD's, each on it's own dropline; and a Raymarine SPX10 autopilot on its own dropline.

    So, I want to connect the engine info from my Yamaha command link so I can monitor the engines from the Furuno MFD's ...

    and I don't know if I should connect into my existing Furuno backbone, by making the command link a "dropline" coming off another Tee in the backbone, and making the connection into a 'device' port on the multi-hub ... I suppose I would use the Gateway (6Y9-8A2D0-20-00), plus a pigtail.

    OR, do I effectively connect the two backbones together, by taking out one resistor from my existing Furuno NMEA 200 network, and replacing it with a spliced-in male devicenet fitting, going to a Yamaha bus harness (6-pin). I would pull out one of the resistors on the Yamaha multi-hub, and connect this bus harness there. I think I would also move the power tee to that area, and only have power going in the direction of my Furuno network, and not into the Yamaha network, which has it's own power cord, linked to the starting keys...

    To me, its more logical that option 2 would work, but on the other hand, Yamaha has the Gateway product which seems to do what I want. What is confusing me, and keeping me wary from going the option 1 route, is that in some literature it seems that the Gateway is meant to connect DIRECTLY into an MFD with a NMEA 2000 port, so the Gateway (along with the required pigtail) is effectively a dropline coming from the Yamaha backbone to a MFD.... If that is true, then I'm not sure that connecting directly into the backbone of my Furuno network from the backbone of the Yamaha network through the Gateway (+ pigtail) makes sense.

    UGGHHH - can anyone shed any light on this? To make it even more confusing, I've been reading about two different a Maretron products that replace the gateway .. but one is meant to go to a MFD, and one does something else ...

  • #2
    You simply add another T fitting to your Furuno network.

    The Yamaha Gateway has two connectors. One plugs into the Yamaha Command Link hub. The other plugs into the T fitting you added.

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    • #3
      OK, so you're saying option 1. Thank you.

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      • #4
        Thanks Boscoe, but I have one more question: in my earlier research, I noticed a post from you in a very similar thread where you mentioned doing the connection with a boe marine cable, and removing 1 resistor from each network. Just want to double check that I'm not missing anything here. Your post is dated 4/4/14 and the thread is something like "command link problems". Really appreciate your help on this, I don't want to make a connection that messes up two complex networks!

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        • #5
          There are about 8 different ways to skin this cat.

          I have decided to only recommend/depict the Yamaha way, which is to use a Yamaha Gateway.

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          • #6
            I understand, thanks again!

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