User's Manual

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Sentence use reference
B-10 Appendix B: NMEA sentences 98-137573-A
B.2.19 LRI - AIS long-range interrogation (input / output)
$--LRI,x,a ,xxxxxxxxx,xxxxxxxxx,llll.ll,a,yyyyy.yy,a,llll.ll,a,yyyyy.yy,a*hh<CR><LF>
B.2.20 NAK - Negative acknowledgement (output)
$--NAK,cc,ccc,c-c,x.x,c-c*hh<CR><LF>
B.2.21 PTHRAOC - AIS operational control (input / output)
$PTHRAOC,x,x*hh<CR><LF>
Field Data format Description Comment
1 LRI Sentence Id Used
2 x Sequence number, 0 to 9 Used
3 a Control flag Used
4 xxxxxxxxx MMSI of requestor Used
5 xxxxxxxxx MMSI of destination Used
6 llll.ll Latitude (north-east co-ordinate) Used
7 a Latitude - N/S (north-east co-ordinate) Used
8 yyyyy.yy Longitude (north-east co-ordinate) Used
9 a Longitude - E/W (north-east co-ordinate) Used
10 llll.ll Latitude (south-west co-ordinate) Used
11 a Latitude - N/S (south-west co-ordinate) Used
12 yyyyy.yy Longitude (south-west co-ordinate) Used
13 a Longitude - E/W (south-west co-ordinate) Used
Field Data format Description Comment
1 NAK Sentence Id Used
2 cc Talker identifier Used
3 ccc Affected sentence formatter Used
4 c-c Unique identifier Used
5 x.x Reason code for negative acknowledgement Used
6 c-c Negative acknowledgement's descriptive text Used
Field Data format Description Comment
1 PTHRAOC Sentence Id Used
2 x Enable/disable inland waterways mode
0 = Disable
1 = Enable
Used
3 x Enable/disable long range broadcast
0 = Disable
1 = Enable
Used