Josh, The instruments I’m using are Raytheon ST60 Tridata and Wind/CloseHauled. They output the data on an old Seatalk(1) bus which is a Raytheon/Raymarine priority protocol for combining the otherwise NMEA0183 data from the various transducers. There is nothing in my manuals regarding the version of 0183 associated with these devices. I have done a little research, however, and found that version 2.30 came out in 1998 and version 3.00 came out in 2000. See http://www.nmea.org/content/nmea_standards/nmea_0183_v_410.asp. There is a decent discussion of the relationship between Seatalk and NMEA0183 in the following article by a German engineer who has attempted to reverse engineer the Seatalk protocol (http://www.thomasknauf.de/rap/seatalk3.htm#Sig). From those bits of info and the fact that my manuals are dated August and September 1999, I would guess that if the corresponding NMEA sentences were demultiplexed from the Seatalk bus, they would conform to the 2.30 standard, if you can call it a standard! There is another rather extensive document on NMEA0183 sentences, structure, etc in http://gpsd.berlios.de/NMEA.txt. The way I am using the old instruments to get the data onto the NMEA2000 bus really doesn’t involve NMEA0183 directly (in fact there no way to get NMEA data from the instrument heads). What I did was to connect the depth, speed/temp transducer signals to the tridata head, the wind transducer signal to the wind head, daisy chain the two heads together via Seatalk, and connect one of them to the Seatalk to Seatalk ng converter. This effectively converts the sentences to 2000 format except for the connector. The Seatalk to Seatalk ng converter is then connected to the 2000 backbone via an adapter cable which Raymarine sells. When I started this project, I was a little concerned about being able to bridge the old instrument data to the new bus, since the Raymarine literature stated that ST60+ or ST70 instruments were required, but I tried it with the old stuff and it worked. Realize this is a somewhat roundabout answer to your question, but the whole issue is rather convoluted.
Monty Scandia 1991 C&C 34+ Annapolis, MD On Mar 25, 2014, at 12:16 PM, Josh Muckley <muckl...@gmail.com> wrote: > Monty, > > Can you give any details on what version of MNEA 0183 your instruments are > using. > > Thanks, > Josh > > On Mar 25, 2014 11:25 AM, "Monty Schumpert" <jmschump...@verizon.net> wrote: > I had a similar issue with 0183 to 2000 conversion. I bought the B&G Triton > wind, speed, depth package, thinking that I would take the mast down this > year to install the wind transducer, and that I could install the speed, > depth,temp transducer in the old housing. Neither of those installations were > possible this year, so I was left with converting data from old Raytheon ST60 > displays to the new 2000 system. I had a Raymarine seatalk to seatalk ng > converter which came with a GPS receiver I bought several years ago so I fed > the seatalk data from the ST60 wind and tridata heads to the converter and > bought a seatalk ng to NMEA2000 cable which plugs into a T in the 2000 > backbone. Everything works fine and all data appears on the new displays. > Next year when I haul the boat, I'll replace the depth, speed, temp > transducer and the mast head wind system. > > > Sent from my iPad > > On Mar 25, 2014, at 6:07 AM, Josh Muckley <muckl...@gmail.com> wrote: > >> Joe, sorry for the confusion but I think if you re-read the thread you might >> see that I was talking about the backwards compatibility of the NMEA 0183 >> standard. It sounded to me like the Zeus takes 0183 v3.0. So my point was >> that it should understand 0183 v1.5. However as one of the other listers >> stated there were changes to the sentance structure in v2.1. So it sounds >> like maybe not perfect backwards compatibility. >> >> On the other hand, I have to believe that the 0183 to 2000 converter was >> engineered properly to noodle throught the nuances of different 0183 >> versions and convert them to 2000. Otherwise it would specify certain 0183 >> versions that it works with. Assuming the actisence converts all versions, >> then it would seem to me that the Zeus could also be equally well >> equipped...who knows whether or not the engineers at B&G had the sence to do >> that. >> >> If the actisence only works with specific versions and v1.5 is not one of >> them then this whole discussion is pointless since that was the original >> topic. >> >> Josh >> >> On Mar 24, 2014 9:15 AM, "Della Barba, Joe" <joe.della.ba...@ssa.gov> wrote: >> 0183 and 2000 are totally different. They cannot be interconnected without a >> device to translate back and forth. For one thing, 0183 is a one talker – >> many listener system and 2000 is a many talker – many listener system. >> >> >> >> Joe Della Barba >> >> Coquina C&C 35 MK I >> >> From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Josh >> Muckley >> Sent: Sunday, March 23, 2014 8:35 PM >> To: C&C List >> Subject: Re: Stus-List NMEA 0183 to NMEA 2000 conversion >> >> >> >> I'm not a NMEA 0183 expert but I though the different versions were >> backwards compatible. So if the Zeus will take NMEA 0183 (3.0) then it >> should understand ver. 1.5. I was under the impression that the 3.0 just >> had MORE reconized "sentences". >> >> Josh Muckley >> S/V Sea Hawk >> Solomons, MD >> >> On Mar 23, 2014 7:11 AM, "Tony Wroblewski" <triump...@hotmail.com> wrote: >> >> Has anyone on the list used the Actisense NGW-1 for a bridge to connect >> older 0183 instruments to a 2000 network. The plan is to use a B&G 390 >> system (NMEA 0183 v. 1.5) to feed wind, speed, depth and heading data to B&G >> Zeus Touch on the 2000 bus. >> >> The other alternative is to use a Tinley 0183 New2Old converter,. Same >> question. Has anyone done this. I'm told the Tinley will convert a ver. 1.5 >> to ver. 3.0 and the Zeus can also take a ver. 3.0 input. >> >> Tony >> Triumph >> C&C 41 '86 c/b >> >> >> _______________________________________________ >> This List is provided by the C&C Photo Album >> http://www.cncphotoalbum.com >> CnC-List@cnc-list.com >> >> >> _______________________________________________ >> This List is provided by the C&C Photo Album >> http://www.cncphotoalbum.com >> CnC-List@cnc-list.com >> >> _______________________________________________ >> This List is provided by the C&C Photo Album >> http://www.cncphotoalbum.com >> CnC-List@cnc-list.com > > _______________________________________________ > This List is provided by the C&C Photo Album > http://www.cncphotoalbum.com > CnC-List@cnc-list.com > > _______________________________________________ > This List is provided by the C&C Photo Album > http://www.cncphotoalbum.com > CnC-List@cnc-list.com
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