NMEA data from Raymarine ST4000+ to Raymarine SL72

[robbieg]

I've got a ST4000+ being fed NMEA data by a Navman 5600.

I've also got an SL72 Raymarine radar. I want to link the autopilot & radar by a seatalk cable so heading data is transferred.

My question is will the autopilot convert the NMEA data it gets from the chartplotter into seatalk & send that to the radar as well so that the radar gets COG etc as well as heading info?
Raymarine techincal support in the USA tell me the autopilot won't convert NMEA into seatalk & send it to the radar whilst Raymarine UK tell me it should work!!

Anyone got this sort of set up & if so can they enlighten me?

Thanks.

 

[FWB]

You may need a PC/SeaTalk/NMEA/RS232C interface box from Raymarine. Part number E85001. £113.

 

[philip_stevens]

Further to Dylan's post, I think that the ST????+ models only receive data NMEA and Seatalk (listener) but will not resend it.

I have an ST3000 (not +) and will only receive Seatalk direct of NMEA via the Interface Box. The interface box will receive NMEA and send Seatalk.

 

[pvb]

It should do...

According to the installation info in the user manual, various sentences received by the ST4000+ as NMEA are transmitted over the SeaTalk link. See the manual for the full list.

 

[Aeolus_IV]

Daft question, can you not split the GPS output into both ST4000+ and SL72 radar unit? Does the Radar not have a NMEA input?

Jeff.

 

[robbieg]

Not a daft question at all-I could do as you suggest. However I have to connect the pilot to the radar by seatalk cable to get the heading data from the autopilot compass to the radar- so if I can get the pilot to convert the NMEA into seatalk it saves another cable run & yet more time upside down in lockers.......

 

[jwrhind]

I am in the process of installing a Raymarine ST4000+, receiving NMEA data from a non-Raymarine instruments.

The ST4000+ receives NMEA 0183 data (sentences VTG, RMC, RMA, APB, APA, RMB, XTE, BWR, BWC, RMB, APB, VWR, MWV, VHW, DBT, MTW are supported) and will present this data on the Seatalk bus (assuming such data are not already there). That the ST4000+ is receiving NMEA data can be verified by scrolling through the data pages.

You should, therefore be able to connect the ST4000+ and the SL72 with Seatalk. I'm surprised that you've found conflicting views from Raymarine. I'd call them again and get clarification - I've found them very helpful indeed.

 

[jfkal]

Wrong.It receives them uses them and discards them. Got the same trouble and bought the back box.

 

[jfkal]

Even though it in not recommended, two "listeners" and one "talker" is working.
The ST4000+ does indeed understand but does not replicate GPS info to Seatalk.
I learnt that the hard way myself. Raymarine is vage about this but they cofirmed to me after some more probing.

 

[jwrhind]

That's a bit worrying. It's not what it says in the manuals and not what Raymarine told me... I sent them a schematic of my planned installation and they confirmed it would function correctly.

At least knowing at this point means that I can plan around this.

Is this related to the product version - I'm looking at the Mk11 ?

 

[snowleopard]

FWIW I input GPS data via NMEA to my Raymarine 5000+ which passes it on to the Seatalk net. I do however have an issue with some instruments requiring v1.5 and others v2.0

 

[jwrhind]

Update: I have now connected my 10 yr old wind, depth, and speed instruments NMEA output to the ST4000+ and the NMEA data is definately being bridged onto the Seatalk network.

I'm happy with this, but it doesn't explain jfkal's experience of the data being discarded.