SEATALKng Conversion to Seatalk (earlier version) or NMEA 0183 for a ST2000 Plus

Channel Sailor

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Hi all

I am about to install new Raymarine i60//i50 (with SEATALKng) instruments and want to try out steer to wind to an ST2000 plus. The ST2000 plus has both Seatalk (earlier version) and NMEA 0183 receive capability. It does not have the SEATALKng capability. I have done some internet research and have so far concluded :-

To interface from SEATALKng to either SEATALK or NMEA0183 I need a conversion widget.

Both SEATALK (earlier version) and 0183 run at the same data rate speed (4800 baud) but maybe the old Seatalk could communicate slightly quicker because possibly (not sure) the sender looks for any available gaps to send messages as opposed to a set sequence.

I only need to send from the i60 one direction to the ST2000 plus.

I have already bought the Raymarine convertor kit to use 0183. But now realise maybe I should/could use the old SEATALK instead.

So I am thinking it makes no difference which method I use because would no discernible difference in responsiveness of the ST 2000 plus tiller pilot. Or does anyone here know otherwise?

Does anyone know how often the i60 sends out the packets of data for apparent wind direction on the SEATAKng network? For example every 10mS, every 100mS or every second. Then for the 0183 convertor how does all this fast network data get pushed up a much slower 4800 Baud 0183 wires, it must drop some of it because I would not expect it to all fit?

The Apparent Wind direction packet I assume is all that the ST2000 Plus is listening for and acting on.

On a related matter, I have lodged a question with Raymarine support about how to supply power separately to the ST2000 Plus and the Instruments, but still have this converted communications link between them and possibly a shared ground/screen. But if anyone here knows how to do it already then please I would be interested.
 
Thank you baggywrinkle. The Wind sensor Is analogue to the i60 display. The display is seatalkng to the network. Yes I have the E70196. The E22158 appears to plug in the back of the autopilot. Whereas I have a tiller pilot which would need bare wires. So maybe I have to strip off the plug in the kit. Also there is the 12A power supply to tiller pilot, separated from the Seatalk and sealing power feed.
 
Thank you baggywrinkle. The Wind sensor Is analogue to the i60 display. The display is seatalkng to the network. Yes I have the E70196. The E22158 appears to plug in the back of the autopilot. Whereas I have a tiller pilot which would need bare wires. So maybe I have to strip off the plug in the kit. Also there is the 12A power supply to tiller pilot, separated from the Seatalk and sealing power feed.

If the tiller pilot is the only Seatalk1 device you want to connect, then you can cut the Seatalk1 connector off the end of the SeaTalk1 to SeaTalkNG adapter cable (A22164) in the E22158 kit and wire it directly to the tiller pilot as shown in the ST 2000 plus manual ... need to investigate if the power line from the SeaTalk1 network should be connected though. I suspect not.

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I think you need the E22158 - Raymarine - SeaTalk1 to SeaTalkNG converter kit

SeaTalk1 to SeaTalk NG Converter Kit | Raymarine

View attachment 98777
I assume wind sensor is on SeatalkNG?
last year i installed the Evo computer & backbone system the replace the Type 100 course computer.
i had to fit item No 6 to link ST 60 to STng, item No 6 is about 110 beer vouchers, expensive but the STng us a doddle to fit. All the existing ST60,furuno GP 32 all talk the the Evo system & sailing via windvane works very well indeed
 
I found this doc on the web: SeaTalkng Reference Manual Document reference: 81300-1 Date: June 2007. There might be a newer version available, but I have not looked for it yet. It has been very useful in addition (if not essential) to the manuals supplied with each product and the ST2000 Plus manual (with Baggywrinkles diagram in it) .

To connect the ST2000 plus to STng, besides the E22158 I plan to use a Seatalk1 three socket connector and a seatalk1 to bare wires lead. This means you do not need to chop the seatalk1 plug end off the cable in the expensive E22158 kit.
 
Sailorman - Please I would be interested in what your GP32 does on your STng network. My GPS is a GP32 and is connected via 0183 to my DCS VHF. But was not planning to connect it to the STng as well, but maybe sailor man can tell me that I could get Speed Over The Ground from the GP32 onto the STng for my i50 speed display?
 
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