[CA] [CA11] Duplicate Rudder Position PGN: 127245 on SeaTalkNg

[bruluna]

Duplicate/Different PGN: 127245 on SeaTalkNg network

Evolution AutoPilot: EV2, ACU200, 2-P70R’s

MFD’s: a97, a95 (4 x a78’s not on SeaTalkNg)

New Volvo Penta D3 EVC3 inboards with Rudder Sensor. Sensor connects through Engine to EVC3 and then through a Volvo EasyConnect NMEA2000 bridge to SeaTalkNg.

Problem: the Volvo Rudder sensor is transmitting PGN: 127245, Instance 0 and Instance 1 with real(actual) rudder position data accurately. The ACU 200 is transmitting PGN:127245, Instance 0 and instance 252 with a (null) or blank position. The EV1 retransmits the ACU 200 (null) Instance 252.

Data verified with Maretron USB100 and N2K-Analyzer software.

The MFD’s and P70r’s are receiving all the traffic which causes there output to bounce between 0 and actual position.

I’m sure the ACU200 isn’t going to like multiple PGN: 127245’s on the N2K bus when the boat is ready for sea trial after re-powering.

Please advise.

Backup Information (bad experience with RayMarine Rudder Reference Unit)
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Original Build 2016
Evolution Autopilot Kit (EV2, ACU200, P70r, Type 1 Hydraulic Pump)
A97 MFD with sounder
HD Color Radar

The dealer installed the Autopilot without Rudder Reference Unit (RRU) due to access issues in engine room. (RRU added in 2017).

System was commissioned and worked very well!