I’ve been trying to figure out if Raymarine is moving away from SeaTalk NG for some time. The new backbone adapters join several other STng adapters Raymarine introduced in January of 2019, and along with the many spur adapters also available, I think that Raymarine now has a range that fits just about any need. SeaTalk NG to DeviceNet adapters introduced in 2019 The use of the spur adapter has never caused any issues on my network, but it’s always bothered me that I had to rely either on this hack or hand-splicing cables to adapt the network. From there I’ve connected an additional tee connector and finally a terminator to provide the appropriate termination to the network. But rather than continuing the network through the other backbone port in the tee, I ran an STng/N2K spur adapter cable to the backbone port of an Ancor 4-device tee. In the top left of the photo above, note the STng tee with the incoming blue-striped backbone cable. Thus I learned that there’s an alternative to the backbone splicing method, easier though not any more pretty. I know this issue well because I built Have Another Day’s first NMEA 2000 network using SeaTalk NG cabling and since then have converted most of it to standard N2K DeviceNet cabling.
One end of Have Another Day’s NMEA 2000 network is adapted from SeaTalk NG to DeviceNet Also, I’d say that Raymarine offering these adapters validates the fact that STng is truly N2K with a different cabling scheme. This never seemed like a good solution, so I’m very happy to (finally) see Raymarine offer these adapters. In fact, on their own forum, Raymarine suggests chopping off one end of STng backbone and standard N2K cables and then splicing the two together. It’s always been a mystery to me that Raymarine didn’t offer an STng backbone to N2K plug adapter even though the spur adaptor was available when SeaTalk NG launched in 2007. I’d love to provide you links to Ray’s web pages for these adapters, I’m guessing they will appear in the adapter cable section of the SeaTalk NG page soon. Backbone cables won’t fit in spur sockets and nor will spur cables fit in backbone sockets. Sockets on STng devices and tee connectors have blue and white locking collars to indicate the cable type. The backbone cables have a blue stripe and blue ends on the connectors while the spur cables have a white stripe and white connector. In a departure from NMEA 2000 standard cabling, SeaTalk NG uses separate backbone and spur cables. Good news! Raymarine now offers cables that adapt STng backbone to male (Raymarine Part number A80674) and female (A80675) N2K connectors. But, until very recently, Raymarine has not offered an adapter to convert the blue-striped SeaTalk NG (STng) backbone cables, only the white-striped spur cables. It’s compatible with NMEA 2000’s standard DeviceNet cabling through the use of adapters. Raymarine’s SeaTalk NG is Raymarine’s proprietary version of NMEA 2000 cabling. It has a bi-directional converter with wide support of message types including AIS and autopilot.A sample SeaTalk NG network with both ends adapted to NMEA 2000 DeviceNet via the new adapters The NMEA 0183 Gateway allows you to connect NMEA 0183 equipment to a NMEA 2000 network and vice versa. In order for the system to function properly, connect the power in the middle of the backbone. Connectors with integral positive and ground wires (with in-line fuses for the positive wires) supply onboard power to the backbone - the main communication channel for the system. NMEA 2000 networks require electrical power. Likewise, people ask, does NMEA 2000 need power? Move to various locations of your NMEA 2000 network to test that network power is consistently 12-13.5 VDC. Connect DVOM probes to pins 2 (Red wire) and 3 (Black wire) to confirm 12VDC shows. NMEA 2000 is more like Ethernet networking.īeside above, how do I test my NMEA 2000 network? Change the DVOM dial to VDC.
#ARE ALL NMEA 2000 CONNECTORS THE SAME SERIAL#
NMEA 0183 is like serial communications that old computers used. They are not 'languages' but really specify the electrical connection between two (or more) devices. Hereof, what is the difference between NMEA 0183 to NMEA 2000? The backbone powers each instrument and relays data among all of the instruments on the network. Various instruments that meet the NMEA 2000 standard are connected to one central cable, known as a backbone. The protocol is used to create a network of electronic devices-chiefly marine instruments-on a boat.