Seatalkng to Male DeviceNet Cable

[ctva]

I am looking at installing a Raymarine EV100 autopilot on the boat which has an existing standard NMEA2k network. The Raymarine Seatalk items need a Seatalkng to Male DeviceNet cable but this is £30 for a one foot cable! I have no issue where I can see the work or material values in an item but this is ridiculous. Does anyone know of a third party supplier that does it at a reasonable rather than rip off price ?

 

[lpdsn]

There's a few ways to skin the cat. Depends whether you want the rest of your backbone to be DeviceNet or Seatalkng. The Raymarine Autopilot has several components (EV-1, ACU & p70 at least) so you don't want to have to have three adaptors. A lot also depends upon where you want to position things

You can certainly join DeviceNet and Seatalkng backbones, but probably best to group the Raymarine bits together then join to the DeviceNet backbone. Treat it as one backbone with a 120 Ohm resistor at each end. That may mean one Raymarine terminator and one DeviceNet.

You can get field installable DeviceNet connectors, so you could produce your own joining backbone cable, but that would mean cutting a Seatalkng cable. Alternatively cut an example of both and join with a terminal block. Actisense will sell you a box that joins backbones and allows you to spur off, IIRC, four connections.

The Seatalk cable is likely to include an extra yellow wire that you can ignore for joining to DeviceNet (I say likely because I'm not sure they are consistent with the wires they use although I have a cut STNG spur that does have it).