I have a flux gate compass I disconnected it from the head because I thought the auto-pilot head would now get its heading from the GPS unit?
So I will take some photos and show you what I have. How will I ever nap a nap in??? On Mon, Jan 13, 2014 at 2:19 PM, Michael Brown <m...@tkg.ca> wrote: > > > >Though something to consider is that the 0183 standard is for a total of > 4 > >wires to send and recieve. RX+GND and TX+GND. I didn't see where you > >mentioned all those wires...sounded like too few. > > > The ST4000 control head is NMEA IN only, two wires marks - +. > > > > > > So now, If I understand you correctly. I first have to create a route > then to > > start navigating a course or to a way-point. That should start > > broadcasting a course to steer signal. then I in-gauge the st4000 by > > pressing the +10 and -10 at the same time and it should start taking > > direction from the Garmin? > > does this sound correct? > > > > > With NEMA to the ST4000 it depends on what is being sent. Autohelm > describes two > scenarios, automatic acquisition and manual acquisition. > > Automatic - both cross track error and bearing to waypoint are sent > Manual - only cross track error is sent > > With automatic get everything engaged and press +10 and -10 together. The > manual > requires that you get on course withing 5 degrees of the bearing to the > waypoint and > cross track less than 0.1 nm, then press +10 and -10 together. > > My guess is, and strictly a guess, is that the ST4000 uses its own > fluxgate compass > for navigation and takes some error correction from NEMA for cross track. > > > > > >I know it has probably been done by others but I am not sure that I would > >ever let my ST 4000 plus steer a course unattended based on transfer data > >from my chart plotter. > > > I wonder if that was what Autohelm was thinking, they seem to use the > fluxgate compass. > > > > Curt ? it?s been my experience that pretty much NO equipment uses the > same color wire for the same thing, even among equipment from the same > manufacturer. > > >You need to connect the NMEA0183 output wires from the GPS to the > NMEA0183 input wires on the > autopilot; TX+ and TX- on the Garmin to RX+ > and RX- on the Raymarine. > > >I can guarantee that the chances of any two of these wires having common > colors is about zero. > > > Supposedly the + is Red and - is Blue, however Autohelm agrees with you. > They are marked + and - only. > > > Michael Brown > Windburn > C&C 30-1 > > > _______________________________________________ > This List is provided by the C&C Photo Album > http://www.cncphotoalbum.com > CnC-List@cnc-list.com > > -- *At sea, I learned how little a person needs, not how much.- Robin Lee Graham*
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