JRC JLN-900 - Standard IEC 61162-1; NMEA 0183

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3.1 Standard IEC 61162-1 / NMEA 0183
The implementation of the sentences were according to the IEC 61162-1 (NMEA 0183)
standard valid at the time of approval. All outputs will, whenever possible, refer only to
messages defined in these documents. Later editions of sentences may have additional fields.
The first two characters after the $ sign define the talker identifier. Our products use the
following identifiers:
IN Integrated Navigation
SD Sounder, depth
TI Turn rate indicator
VD Velocity sensors: Doppler, other/general
VR Voyage data recorder
(See IEC 61162-1 standard for a complete list of talker identifiers.)
3.1.1 Alarm Acknowledge (--ACK)
This sentence is used to acknowledge an alarm condition reported by a device.
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$--ACK,xxx*hh<CR><LF>
Field # Field Type Definition Note
1
Name
Alarm acknowledge VD = Log, VR = VDR,
SD = Depth Sounder
2
Xxx
Local alarm number
3
Hh
Check sum
3.1.2 Alert command (--ACN)
Used for acknowledge, silence, responsibility transfer and to request repeat of alert.
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$--ACN,hhmmss.ss,AAA,x.x,x.x,A,A*hh <CR><LF>
Field # Field Type Definition Note
1
--
Talker id
2
hhmmss.ss
Time of alarm condition UTC
3
AAA
Manufacturer mnemonic code SAL
4
x.x
Alert identifier Log: 20000 + PSALW no.
VDR: 10000 + Alarm no.
5
x.x
Alert instance 1 to 999999
6
A
Alert command A: acknowledge
Q: request / repeat information
O: responsibility transfer
S: silence
7
A
Sentence status flag C: command
8
Hh
Check sum