Connecting iAIS to NMEA Bus

[SimonFa]

I have just bought an iAIS and it comes with a flying lead with a pin out for DC and NMEA in and NMEA out. I'd like to connect it to my Raymarine kit for GPS and other instrument data to be broadcast. My plan was to situate it close to my GPS, Raymarine RN300, and connect in t the bus there, possibly by using a Raymarine T STNG Piece, however I can't fin any suitable plugs to fit on the end of the flying lead and wondered if I have missed something?

I was also wondering if the Raymarine bus would also support the power consumption of the iAIS but can't find any ratings for the bus.

I'd appreciate any thoughts or knowledge on these issues.

Thanks in advance,

Simon

PS I know I can give DY a call on Monday but I'm trying to get everything together this weekend.-

 

[David2452]

The usual Digital Yachts AIS is HS NMEA 0183 and isn't directly compatible with seatalk NG which is a proprietary non certified version on N2K so no, you are on a non starter unless your DY AIS is one of the later N2K units, in which case it will be pretty simple. The fact that you mention NMEA in and out is a pretty conclusive indicator of a non N2K unit.

 

[Norman_E]

As above it is pretty clear that the AIS is NMEA 0183. If you want NMEA 2000 instruments to see the data you can do so via an Actisense Gateway. The NGW-1-ISO-AIS version is what you need. http://www.actisense.com/products/nmea-2000/ngw1.html
I think that Raymarine supply a cable to connect standard NMEA2000 micro connectors to their own proprietary ones. I am assuming that your Raymarine instruments that use rebranded NMEA2000.

 

[laika]

If you want NMEA 2000 instruments to see the data you can do so via an Actisense Gateway. The NGW-1-ISO-AIS version is what you need.

I could be wrong (I'm only going on the blurb: I don't even have n2k but I think the NGW-1-STNG can also do 38.4k but includes the stng connector.

 

[David2452]

I could be wrong (I'm only going on the blurb: I don't even have n2k but I think the NGW-1-STNG can also do 38.4k but includes the stng connector.

No, Seatalk new generation is a proprietary version NMEA2000 and will not directly interface with 0183 without an interface, that is not to say that instruments with STNG will not accept the data but it will not be via STNG but an 0183 port.

 

[laika]

I could be wrong (I'm only going on the blurb: I don't even have n2k but I think the NGW-1-STNG can also do 38.4k but includes the stng connector.

No, Seatalk new generation is a proprietary version NMEA2000 and will not directly interface with 0183 without an interface, that is not to say that instruments with STNG will not accept the data but it will not be via STNG but an 0183 port.

The NGW-1-STNG is an NMEA-0183 to seatalk-ng converter. The one Norman_E proposed would (I think) need an additional n2k to stng adapter, but does 38.4k baud on the -0183 side out of the box. My reading of the product blurb is that the NGW-1-STNG does 4800 on the -0183 side by default but just needs configuring for 38.4k if SimonFa wants to do AIS.

 

[knuterikt]

The NGW-1-STNG is an NMEA-0183 to seatalk-ng converter. The one Norman_E proposed would (I think) need an additional n2k to stng adapter, but does 38.4k baud on the -0183 side out of the box. My reading of the product blurb is that the NGW-1-STNG does 4800 on the -0183 side by default but just needs configuring for 38.4k if SimonFa wants to do AIS.

Correct the NGW-1-STNG come with a "DeviceNet Adaptor Cable" in the box http://www.raymarine.com/view/?id=5536&collectionid=9&col=1617
I have one of these in my heterogeneous network with components from
-Furuno - NMEA 2000
-Raymarine - SeatalkNG
-Em-trak - NMEA 2000
All on the same SeatalkNG network (cables from Raymarine)
Actisense NGW-1-STNG convert wind data from NMEA 2000 to NMEA 0183 for the older autopilot.

The NGW-1 can convert both ways, but it will in it's default config only convert N2K to 0183
It can be configured for either 38.4K-baud or 4800 baud (not at the same time)

So for this us I would have selected the NGW-1-ISO-AIS that is preconfigured to covert AIS from 0183 to N2K with an adaptor cable.

 

[SimonFa]

Thanks everyone, looks like I need to learn a lot more about NMEA. I'm getting in touch with Actisense as that does seem like the quickest solution.

One thing I've learned in the past 12 months of boat ownership is that nothings ever easy, or cheap! But I knew the cheap bit

Simon

 

[neil1967]

Actisense replied quickly when I had a question about their converters. Unfortunately I wanted to connect a NMEA 2000 plotter to a NMEA 0183 VHF/AIS, but the AIS feed from the radio would be at 38400, and the GPS feed to the radio needs to be at 4800 and their converters only work at a single speed (which is configurable) - not unexpectedly. I might end up using a separate gps to feed the radio and then a convertor for the AIS feed to the plotter - unless standard horizon produce a N2K VHF/AIS in the next year or so.....

 

[knuterikt]

Why do you write this?

seatalk NG which is a proprietary non certified version on N2K

From http://www.raymarine.no/view/?id=5536

NMEA 2000 / SeaTalkng
The current marine industry standard. All current Raymarine MFDs are NMEA2000 certified. The standard utilises the CAN (Control Area Network) design developed by Bosch for the automotive market but with messages/sentence appropriate for the marine industry.
A multi-talker, multi-listener approach using serial data at moderate date rates (250kbs).

Cable System
Under the NMEA standard, manufacturers can use the cable/connector design of their choice so long as it conforms to certain requirements. The topology is a robust terminated backbone/spur design.

SeaTalkng
Raymarine’s proprietary cable system for use in NMEA 2000 networks. The design provides two advantages. First, the connector collars are retained on the product which allows for a smaller cable diameter making installations easier. More importantly, the cable can include a sixth wire which allows for backward compatibility with SeaTalk1 equipment. Products with SeaTalkng connectors can be used on NMEA 2000 networks that use Devicenet cabling through simple connector adaptors and conversely equipment with Devicenet connectors can be used on NMEA 2000 networks that use SeaTalkngcabling through simple connector adaptors.

 

[AngusMcDoon]

Why do you write this?


From http://www.raymarine.no/view/?id=5536

Raymarine add some proprietary messages to their implementation of N2K, which is allowed and still be compliant. The Navico group of manufacturers (B&G, Simrad, Lowrance, Eagle) do so as well. These manufacturer specific additions are not compatible with each other.

 

[knuterikt]

Ok
I asked why he wrote this

seatalk NG which is a proprietary non certified version on N2K

Raymarine add some proprietary messages to their implementation of N2K, which is allowed and still be compliant. The Navico group of manufacturers (B&G, Simrad, Lowrance, Eagle) do so as well. These manufacturer specific additions are not compatible with each other.

You answered a totally different question

I know that there are a lot of stuff not covered by N2K standard.
How sensors can be calibrated - I need a Raymarine display of some kind to calibrate my wind sensor
How software on devices is to be updated - I will need a Raymarine MFD with SD card reader to update software on my Raymarine i70's and the ITC-5
I must use my Furuno MFD to update software on my Furuno radar
The list goes on

But all my NMEA 2000 / SeatalkNG stuff work together.