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Old 16-01-2021, 18:34   #16
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Location: Boston, MA
Boat: 1981 Bristol 32 Sloop
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Re: Please help a dinosaur

This wiring diagram in this post shows in the lower left corner the Mareton FA-CF-ST Connector, and the wiring in the bottom right shows where it is used to attach to the Raymarine STNG system to the Lowrange Micro T Nmea2000.

I followed the instructions and it worked. It was not that difficult.

I think Panbo may also have mentioned this.
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Old 22-01-2021, 10:34   #17
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Re: Please help a dinosaur

Originally Posted by redhead View Post
We've looked at the FAQ on the Raymarine site....

If I understand correctly, you want to control your Rm EV400 from Garmin chartplotter ?
I thouth it is impossible

Because Rm have own proprietary protocol for data exchange between control head and autopilot computer.
They can use NMEA2000 BUS (CAN Bus), but with proprietary messages.

You can send waypoints data, from Garmin to Rm AP, and, as I understand, no more.
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Old 22-01-2021, 11:03   #18
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Re: Please help a dinosaur

Originally Posted by Dsanduril View Post
The GPS 740S can transmit PGNs (Parameter Group Number):

129025 Position - Rapid Update
129026 SOG/COG (speed over ground, course over ground) Rapid Update
129029 GNSS Position Data
129283 Cross Track Error
129284 Navigation Data
129285 Navigation Active Waypoint Data
and a bunch more
These are sufficient to control my B&G autopilot from my 740s.

The only issue is Garmin uses some proprietary protocols for the auto-routing option.

In other words, I can set the Garmin to "go to" a waypoint, and it will tell the autopilot how to stay on the course line. But if I ask the Garmin to invent its own route and follow that, the B&G (and probably any other autopilot) doesn't understand what it's being sent and can't do anything.
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