SmartPilot error to Classic E120 Chartplotter

[Chuck - Raymarine - Moderator]

cjfrench,

Your diagram appears to be incorrect in the following ways:
1) in that it show the fluxgate, rudder, motor, and clutch interfaced to a part number E12107. E12107 is the part number for a ST6002 autopilot control head. The aforementioned autopilot components should have been interfaced to an autopilot course computer (model not specified by you). While the diagram would appear correct for a compatible autopilot, it may indicate that the autopilot's SeaTalk port is not functioning correctly or that there is an issue with its interface to the SeaTalk bus.

2) The SeaTalk bus is supplying power to the SeaTalkng backbone. Within your diagram, it appears that the autopilot course computer (model not specified) is powering the SeaTalk bus, which is in turn backfeeding power to the SeaTalkng backbone. Instead, the SeaTalk bus should be powered from the SeaTalkng backbone. Accordingly, the red SeaTalk terminal of the autopilot course computer should be disconnected from the SeaTalk Cable connecting the autopilot course computer to the SeaTalk bus. A power insertion point will need to be installed as a spur within the backbone using a SeaTalkng Power Cable. The location of the spur will be at the approximate midpoint of the backbone's LEN load. The SeaTalkng Power Cable will be interfaced to a switched 12VDC power circuit.

3) The ST70 Instrument display within the starboard hull should not be used as a SeaTalk to SeaTalkng Data bridge as you have installed it, as ST70 Instrument software has not evolved to perform as an effective data bridge with autopilots. Instead, the SeaTalk devices which you have shown interfaced to the ST70 Instrument display should instead be interfaced to a SeaTalk to SeaTalkng Converter. Each SeaTalk to SeaTalkng Converter can support data bridging/powering up to five devices featuring a SeaTalk communications interface (ex. ST40/60 Instruments, wireless autopilot controller, ST6002, etc.).

Additional Note: It is recommended that you verify that the SeaTalk to SeaTalkng Converter(s) have been updated with v1.21 SeaTalk to SeaTalkng Converter software rather than other versions of software for the converter.

After making the specified changes, the communications with the autopilot course computer may be verified by checking the MFD is receiving Rudder data. Should problems persist, then please respond with the model of autopilot course computer installed.