ST4000 plus w/ E80 as navigator over SeaTalk 1 bus

[Chuck - Raymarine - Moderator]

Welcome to the Raymarine Forum Phil,

The ST4000 will exclusively rely upon the fluxgate compass which has been interfaced to its respective terminals for heading data. While this generation of product did not support multiple sources of any one type of data within the system, Raymarine's MFDs prioritize heading data from a NMEA 0183 heading source over that from a SeaTalk or SeaTalkng/NMEA 2000 heading data source. Accordingly, it should be possible to interface the MFD to the ST4000 via SeaTalk and then interface the NMEA 0183 source of heading data the MFD NMEA 0183 Cable's NMEA IN leads to permit the MFD to then use heading data from the NMEA 0183 data source.