MDC-1840BB/1841BB/1860BB/1810BB/1820BB Series Chapter 10
Operation Manual Technical References
93142122-07 10-1
Chapter 10 Technical References
10.1 Serial input data sentence detail
Sentence name: IEC61162-1 or NMEA0183 Ver 2.30
Descriptions
(1) Data priority
Data such as waypoint display, own ship’s position and the speed against water are
available from two different sentences in IEC61162-1. These data are prioritized as
follows:
Data name Available sentences Priority
Waypoint RMB and BWC RMB>BWC
Own ship’s position GGA and GGL GGA>GLL
Own ship’s speed against water VBW and VHW VBW>VHW
(2) Route display
In case the RMB/BWC and RTE/WPL sentences are all input, only routes are
displayed while the waypoint without route is not displayed.
(3) Checksum
Checksum is the total of all the EX-ORed data between the $ and asterisk (*) signs.
BWC Bearing & Distance to Waypoint
$ - - BWC, , xxxx.xxx, N/S, xxxxx.xxx, E/W, xxx.x, T, , , xxx.x, N, xxx, a *hh <CR><LF>
GGA Global Positioning System Fix Data
$ - - GGA, , xxxx.xxx, N/S, xxxxx.xxx, E/W, x, , , , , , , , , *hh <CR><LF>
Sentence
format
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