RMB sentence shows wrong waypoint name

Yes, you are correct. I found the discussion in CruisersForum from June this year. openCPN has wrong RMB generation.

Sorry, we can close.

Hi Maitai,
I'm checking this issue with dwarning for this project : MicronetToNMEA

I checked the documentation on OpenCPN's webpage and for RMB, it says :

RMB - Recommended Minimum Navigation Information
To be sent by a navigation receiver when a destination waypoint is active.

Field Number:
Status, A= Active, V = Void
Cross Track error - nautical miles
Direction to Steer, Left or Right
FROM Waypoint ID
TO Waypoint ID
Destination Waypoint Latitude
N or S
Destination Waypoint Longitude
E or W
Range to destination in nautical miles
Bearing to destination in degrees True
Destination closing velocity in knots
Arrival Status, A = Arrival Circle Entered
Status A - Data Valid, V - Data Invalid, FAA mode indicator (NMEA 2.3 and later)
 

So, it says the same than you : FROM is sent before TO. However, OpenCPN actual implementation sends TO, before FROM. So my understanding is that qtVLM behavior is right while OpenCPN's implementation is wrong.

BR,

Ronan.

I can agree with you both - qtVlm is correct, openCPN 5.6.2 is not.
Meanwhile I found this discussion:
www.cruisersforum.com/forums/f134/rmb-sw...waypoint-265606.html

I installed the plugin and was able to receive correct RMB messages with our application. They have now $II instead $EC prefix.