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NMEA-2000: Connectors: The Third Generation: DeviceNET
|Author||Topic: NMEA-2000: Connectors: The Third Generation: DeviceNET|
posted 03-15-2007 08:05 AM ET (US)
On the back panel of a new Lowrance instrument I noticed that there is a new connector configuration for the NETWORK port. This new connector is a red plastic connector which has threads for securing the mating plug. I believe this is a new style for Lowrance.
Is this new LowranceNet red plastic thread-on connector going to be a new NMEA-2000 standard?
posted 03-15-2007 03:15 PM ET (US)
The new red connector system is directly compatable with Molex Micro C connectors which are the NMEA-2000 standard. Lowrance will change from their blue network to red starting with the head units first and then the network components. There will be a range of adaptor cordsets for the interim. The new red system introduces a hard double T which will be supplied with all external GPS units removing the need for an expansion kit.
posted 03-16-2007 07:31 AM ET (US)
Thanks for the information. It sounds like the NMEA-2000 standard is finally standardizing on a connector.
It appears that Bombardier will be transitioning to the new LowranceNet Red connector for their NMEA-2000 instrumentation beginning in a few months, probably with the model year change over. The Bombardier hub system which has been used for several years will likely be deprecated, although I am certain adapter cables will be available to integrate new and old style devices.
Lowrance has a publication which shows the Micro-C style NMEA-2000 connectors and how to interconnect their LowranceNet connectors to them:
posted 03-18-2007 12:21 PM ET (US)
These Molex Micro-C connectors are also known as DeviceNET connectors.
We now seem to have three generations of NMEA-2000 connectors used with Bombardier motors.
GEN-1: the Bombardier Deutsch connectors and hubs, used initially c.2005.
GEN-2: the LowranceNET blue plastic twist-lock or bayonet style connectors, which are being used in current 2007 products from Bombardier.
GEN-3: the DeviceNET or Molex Micro-C or LowranceNET red plastic threaded connectors which are currently being used on the latest Lowrance products and apparently will come into use on 2008 model-year Bombardier motors. Again, you can recognize this connector by the red color and the threaded coupling on the NETWORK port of Lowrance devices.
The connector changes are just a minor physical layer problem, as the networking of NMEA-2000 remains the same. The various vendors seem to have had a few squabbles while working out what particular connector they would use.
It is good to see that both of the earliest adopters of NMEA-2000, Lowrance and Bombardier, are transitioning to a standardized connector. This should help other vendors see the wisdom of this. It would be nice if all manufacturers who produce NMEA-2000 devices would use the same connector.
posted 06-08-2007 12:21 PM ET (US)
I've got a NMEA 2000 transducer that uses a 6-pin Deutsch connector that I need to get onto my LawrenceNet. Clearly, the connectors are not plug and play. A few questions:
* It appears the incompatiblily is simply at the physical layer-- is that correct?
* If so, is there any reason I can't simply make my own cable by splicing a Deutsch connector onto a LowranceNet cable?
* Assuming I can make my own cable, what is the pin-out on a blue LowranceNet cable?
posted 06-08-2007 12:58 PM ET (US)
Here is one reference, although perhaps not quite authoritative, but probably accurate:
See the follow-up comment at the bottom of the article for the pin-out and wire color coding.
posted 06-25-2007 04:00 PM ET (US)
I think I'm between generations. I bought Lowrance LMS520C combo plotter with LGC3000 GPS module. I think they are using Gen-3. Red connectors. So far OK. However, I also bought E-tec 115 and engine interface cable, blue gen-2 connectors, of course. All those should be 2007 models. My dealer tried to to connect cables two months ago without success. Now I'm just waiting. Can anyone here help me?
posted 06-26-2007 08:46 AM ET (US)
You may be able to fabricate your own adapter cable. The wiring insulation colors should be consistent among the different connectors. You could splice a red and blue connector together.
posted 07-03-2007 02:28 AM ET (US)
Thanks for all. My problem is now solved. I got an adapter cable (RD2BL) Now the other end of the bus is Blue and the other is Red.
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