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WAT - Water level detection (PAS 102)
This sentence provides detection status of water leakage and bilge water level, with monitoring
location data. Malfunction alarm of the water level detector should be included in the “ALA”
sentence.
$xxWAT, A, hhmmss.ss, aa, aa, xx, xxx, A, c—c, *hh<cr><lf>
0 1 2 3 4 5 6 7 8 9
0) Header
1) Message type
S: Status for section: Number of faulty and activated condition reported as number in field 4.
The section may be a whole section (one or both of the division indicators are empty) or a
sub-section. (If S is used then it shall be transmitted at regular intervals)
E: Status for each water level detector. (E may be used to indicate an event.)
F: Fault in system: If limited to one section, indicated by division indicator fields, if not, division
indicators [empty]. (F may be used to indicate an event).
2) Time stamp
Time when this status/message was valid.
3) System indicator of alarm source
Indicator characters showing system detecting water level. The field is two characters.
4) Location (1)
Indicator characters showing detection location. The field is two characters.
5) Location (2)
Indicator characters showing detection location. The field is two characters.
6) Number of detection point or detection point number
Number showing high-water-level detecting point or the number of the water leakage
detection point. This field is three fixed numeric characters.
7) Alarm condition
This field is a single character specified by the following:
N = normal state
H = alarm state (threshold exceeded)
J = alarm state (extreme threshold exceeded)
L = alarm state (Low threshold exceeded i.e. not reached)
K = alarm state(extreme low threshold exceeded i.e. not reached)
X = Fault (state unknown)
When S status indicated in 2nd field, this field is ignored
8) Descriptive text
Additional and optional descriptive text/level detector tag.
9) Checksum