ST4000 plus w/ E80 as navigator over SeaTalk 1 bus

[Phil Niles]

Chuck, I follow your thoughts, I do currently have the AP NEMA 0183 input as the recipient of tracking commands from the E80. In the strictest sense, I have not actually sent the pilot any waypoints from the E80 so as to verify tracking data can/is being sent bidirectionally. The pilot does work when in course holding mode and wind vane mode. I have assumed the SeaTalk 1 ports on both the AP and MFD are operational due to the buffer on the E80 showing Bidirectional AP datagrams and the ability to turn vectors on to display COG and wind vector. Prior to our conversation, I had this nagging suspicion about the E80 not using the slower heading datagrams from the pilot and the refusal of using COG from the GPS (due to the boat having no velocity).

Phil