[C320-list] Sending NEMA 0183 Data from Garmin Charplotter to Raymarine Autopilot

[Jeff Hare]

Hello Angus,

Joe Tamucci replaced his ST-4000+ AP with an the Raymarine X-5 system back in 2010 sometime.  So, he's not referring to the control head you have.  The course computer is part of the X-5 package.  So, if you search the web a bit for that, you might be able to figure out if there's something in common or not.

This was from a post from him back then.
" I just replaced my Raymarine ST-4000 autopilot with an X-5.  Be aware the ring and retainer post on the wheel is larger in diameter and will interfere with the engine pod instrument panel (1999 model year #619).  Also, all wires must go to the computer.  Do not hook up the NMEA connection on the control head (as per Raymarine tech.)"  

-Jeff Hare

-----Original Message-----
From: C320-list [mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of Angus Henderson
Sent: Monday, June 20, 2016 9:58 PM
To: C320-list at catalina320.com
Subject: [C320-list] Sending NEMA 0183 Data from Garmin Charplotter to Raymarine Autopilot

 On June 14th Joe Tamucci submitted a post with the following title, part of which is reproduced below.  

I also recently purchased a Garmin chart plotter, a 54dv and have been thinking about how to get it talk to the Raymarine Authelm.  Joe refers to his AH unit as an ST-5 control head.  I have a 4000+ and was wondering whether this is the same thing?

Also, referring to the excerpt below I am struggling to understand what the “Raymarine computer” is?  I am familiar with the control head, the wheel unit and the flux gate compass but not the “computer”.  I would appreciate some help understanding this.


 3). Although the ST-5 control head has a NEMA input, it cannot be used 
   to input position data.  You must use the NEMA port on the Raymarine 
   computer.  I assumed the control head NEMA 0183 input port would work, 
   and the Raymarine tech agreed with me.  NO!  You must go straight to 
   the computer. 

Thanks

Angus Henderson
Hull# 999=