[CA] [CA11] ST2000+ NMEA0183 Wifi Connectivity

[Chuck - Raymarine - Moderator]

prjacobs,

Please click here to view a FAQ addressing the minimum data requirements for a Raymarine autopilot to enter Track mode. As it turns out, there is nothing wrong with the data content of the NMEA 0183 RMB sentences transmitted by OpenCPN to the NMEA 0183 to Wi-Fi device. I have verified this first stimulating the autopilot with the NMEA 0183 RMB sentence transmitted by the Garmin GPS ... the autopilot was commanded into Auto mode and was then able to be commanded into Track mode. I then stimulated the autopilot with the NMEA 0183 RMB sentence transmitted by OpenCPn ... similarly, the autopilot was commanded into Auto mode and was then able to be commanded into Track mode.

I suspect that the reported issue is more likely caused by a problem with the YakBAK NMEA wireless unit or its configuration settings. Raymarine's autopilots having a NMEA 0183 communications interface are exclusively designed to support 4800 BAUD communications. As AIS data is transmitted via NMEA 0183 is transmitted at 38400 BAUD, it is quite possible that the BAUD rate of the YakBAK NMEA wireless unit's NMEA 0183 Output may be 38400 BAUD rather than 4800 BAUD. Should this not be the case, then it would be recommended that the serial NMEA 0183 output of the YakBAK NMEA wireless unit be directed to a PC running HyperTerminal (or other serial port monitoring application (ex. NemaTalker, etc.)) or other device which can verify the BAUD rate and capture the NMEA 0183 output directly from the YakBAK NMEA wireless unit. Should the data rate transmitted to the autopilot be verified to be 4800 BAUD and should it be verified that NMEA 0183 data is indeed being sent, then you may want to try reversing the NMEA 0183+ and NMEA 0183- leads to the autopilot's NMEA 0183 terminals.