Raymarine ST60 conundrum

[Plevier]

I have the following ST60 setup:
GPS NMEA signal goes to graphic display.
SeaTalk from graphic display daisy chains to wind, tridata, autohelm - those are all at helm - and on to a multi display at the nav table. The autohelm is the only 12V supply connection point.
NMEA in at the graphic display is supposed to be transferred to SeaTalk, and indeed the autohelm seems to get what it needs.
However the multi will not display time, date, lat, long etc.
To get it to do so I've had to connect the GPS signal directly to its NMEA input, it now works fine, so the daisy chained system is getting NMEA in at both ends. That doesn't seem to be causing any problems.
I haven't tried removing the NMEA connection from the graphic display as although the multi is also supposed to port certain parameters to SeaTalk, not as many.

Any Raymarine expert out there with an explanation/solution please?

 

[nigelmercier]

However the multi will not display time, date, lat, long etc.
To get it to do so I've had to connect the GPS signal directly to its NMEA input...

I'm not sure what else you would expect, the Multi is the device that translates between SeaTalk and NMEA.

 

[Plevier]

I'm not sure what else you would expect, the Multi is the device that translates between SeaTalk and NMEA.

The multi isn't the only one. Both the graphic display and the autohelm (ST4000+) supposedly translate a bigger range of NMEA sentences and put them onto the ST output than the multi does.

When supported NMEA data is available at the NMEA IN connector, it is decoded
and displayed by the ST60+ Graphic Display. The supported NMEA input data is
detailed in the following table.
:
XTE, Waypoint identifier, Bearing & distance to waypoint APB
Bearing & distance to waypoint BWC
Bearing & distance to waypoint rhumb line BWR
Latitude and longitude GLL
Time, latitude, longitude, satellites tracked & HDOP GGA
Cross track error MWV or XTE
Navigational information RMB
Time, date, lat, long, COG & SOG RMC
COG and SOG VTG

The following NMEA 0183 wind and navigation data can be decoded
by the ST4000 Plus.
Data NMEA 0183
Course Over Ground VTG, RMC, RMA
Speed Over Ground VTG, RMC
Cross Track Error APB, APA, RMB, XTE
Bearing to Waypoint APA, APB, BWR, BWC, RMB
Distance to Waypoint BWR, BWC, RMB
Waypoint Number APB, APA, BWR, BWC, RMB
Apparent Wind Speed VWR, MWV
Chapter 6: Installation 79
Apparent Wind Angle VWR, MWV
Speed Through Water VHW
Depth DBT
Water Temperature MTW
Note: The autopilot only decodes the last four characters of waypoint
names. Therefore, if long waypoint names are used, the last four
characters must be unique to enable the waypoint advance function to
work.
Transmission of NMEA data on SeaTalk
If any of the above NMEA data is received and the equivalent data is
not present on SeaTalk, the autopilot will transmit the data onto
SeaTalk to make it available to other SeaTalk compatible instruments.
Depth is transmitted in the units defined by the first page in the dat

 

[Billjratt]

I've got ST60s. The NMEA out isn't really compatible with anything I've ever owned.
I wanted to display speed depth etc, on my Garmin 4008 but have been told I need to buy a separate Seatalk-nmea convertor.
The nmea talker on your GPS will be happy feeding multiple listners, so just wire it direct.

 

[FullCircle]

I've got ST60s. The NMEA out isn't really compatible with anything I've ever owned.
I wanted to display speed depth etc, on my Garmin 4008 but have been told I need to buy a separate Seatalk-nmea convertor.
The nmea talker on your GPS will be happy feeding multiple listners, so just wire it direct.

Me too. I have a convertor. It worked when the other logical conclusions proved to not quite deliver.

 

[Plevier]

Thanks but it's not the NMEA out that I'm querying - it's the supposed translation of NMEA in onto the SeaTalk bus.