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gadgetPool.de :: View topic - AIS and SeaNet-Alarm - CPA
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AIS and SeaNet-Alarm - CPA

 
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Klaus
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Joined: Oct 12, 2014
Posts: 3

PostPosted: Fri Oct 31, 2014 6:01 pm    Post subject: AIS and SeaNet-Alarm - CPA Reply with quote

Hi,

Will SeaNet-Alarm recognize my AIS Alarms?

I operate a chartplotter Raymarine C80 and an AIS-transceiver easyTRX2 from Weatherdock.
AIS information is sent via NMEA 38400 from AIS to NMEAin of the C80.
The C80 chartplotter creates the CPA-Alarms (closest point of approach). When they occur, the buzzer of the C80 gives an acoustic alarm.

The built-in CPA feature of the AIS-Transceiver is not used.

Q1: Will SeaNet-Alarm recognize my C80 AIS-alarms?
Q2: Configuration works with Windows 7?

Klaponga
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FWallenwein
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Joined: Mar 26, 2006
Posts: 416
Location: Mannheim / Germany

PostPosted: Thu Nov 06, 2014 2:11 pm    Post subject: Reply with quote

Hello Klaponga,

Quote:
Q1: Will SeaNet-Alarm recognize my C80 AIS-alarms?


No, it will not recognize AIS alarms.

Reason : The SeaNetAlarm only listens on a SeaTalk Network.
It does not read NMEA data.
I simply don't know if the C80 does send AIS Alarms to the SeaTalk Network. And if it does, I don't know which SeaTalk datagrams it will send. This information is simply not available to me.

BUT If you are interested, we could use your equipment to try to find out if/how it works and than we could add this function to the SeaNet alarm.

I could give you a SeaTalk NMEA Bridge, that simply listens on the SeaTalk Bus and you could log everything it receives to a log file.
If you can somhow trigger or provoke a AIS alarn, we could see if and how the C80 does forward this alarm the the SeaTalk bus.

Once we've learned this, I could add this function to the SeaNetAlarm.




Quote:
Q2: Configuration works with Windows 7?


Yes !


Best regards
Frank
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FWallenwein
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Joined: Mar 26, 2006
Posts: 416
Location: Mannheim / Germany

PostPosted: Thu Nov 06, 2014 2:18 pm    Post subject: Reply with quote

Hi again,

I just checked and tried to find out if I can get any information about SeaTalk and AIS.
What I found is
Quote:

Neither the E85001 PC/SeaTalk/NMEA 0183 Interface Module nor first generation SeaTalk communications protocol support AIS data communications.

So - it appears as if this will not be working Sad
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Klaus
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Joined: Oct 12, 2014
Posts: 3

PostPosted: Fri Nov 07, 2014 7:55 pm    Post subject: Reply with quote

Hi Frank,

thanks for the information and your offer to provide me a Seatalk-NMEA bridge for logging the data.
My boat is currently laying on the hard in France. I will not be able to do any testing. So I will leave it at that.

Thanks again and best regards

Klaponga
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Klaus
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Joined: Oct 12, 2014
Posts: 3

PostPosted: Mon Nov 24, 2014 5:22 pm    Post subject: Reply with quote

Now that I know for shure, that there is no AIS-Alarm sentence, I opened my C80 and searched the buzzer. It is in the lower left corner; a MUT-03A 11mm x 14mm sounder. The two upper pins are dummys. The lower right is plus. I soldered a thin cable with 560 Ohm in series and brought it out via a 3.5mm phone socket in the back plane. Now I can trigger an external Alarm with that (pulsed) 1 Volt Signal.

Klaponga
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