RA83/84/85/93/94/95 Series
Chapter 10
Operation Manual
Technical References
Chapter 10 Technical References
10.1 Serial input data sentence detail
Sentence name: IEC61162-1
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
Talker
device
Waypoint
latitude
N: North
S: South
Waypoint longitude
E: East
W: West
Waypoint
Bearing (true)
Checksum
Mode indicator
Waypoint ID
Distance to go (nm)
xx.xx: 00.00 to 09.99 nm
xxx.x 010.0 to 999.9 nm
These fields are used.
Start of sentence
Note for Talker device
identifier:
Only GP (GPS) is accepted.
This field is not used
GPS quality indicator
0: fix not available
1: GPS fix
2: DGPS fix
3 – 8: Not accepted in this sentence.
These fields are not used
Checksum
Start of sentence
longitude
N: North
S: South
E: East
W: West
latitude
Talker
device
Sentence
format
93142105-02
10-1