User's Manual

Chapter 11 Appendix MDC-7000P/7900P Series
0093169006-05E 11-16
ALR Set alarm state
Time of alarm Check su
m
condition Alarm's description text
change, UTC Alarm's acknow ledge state, A=acknow ledged
V=unacknow ledged
Alarm condition (A=threshold exceeded, V=not exceeded)
Unique alarm number (identifier) at alarm source
ACN Alert command
a*hh<CR><LF>
Reles e time Chec k s u
m
Sentence status flag: "C"
Alert command, A, Q, O or S* Note* Alert command
Alert instance, 1 to 999999 A: Acknow ledge
Alert identifier Q: Request / repeat information
manufacture mnemonic code O: Responsibility transfer
S: Silence
ACK Acknowledge alarm
Check su
m
Unique alarm number (identifier) at alarm source
*hh<CR><LF>A,A, c---c$ -- ALR, hhmmss.ss,
xxx,
x.x,x.x,c,
$ -- ACK, xxx
*hh<CR><LF>
$ -- ACN, hhmmss.ss
,
aaa,
Heartbeat
HBT Heartbeat supervision sentence
x*hh<CR><LF>
Chec k s u
m
Sequential sentence identifier
Equipment status A=Yes, V=No
Configured repeat interval
$-- HBT, x.x,
A
,
AIS target and own ship information
VDM AIS VHF data-link message
x*hh<CR><LF>
Ch
ec
k
su
m
N
um
b
er o
f
fill
-
bi
ts,
0
to 5
E
ncapsu
l
ate
d
ITU
-
R
M
.
13
7
1
ra
di
o message
(M
essage part,
6bi
t
fi
e
ld
s
)
AIS
c
h
anne
l
(A/B)
M
essage num
b
er,
1
to
9
S
en
t
ence num
b
er,
1
t
o
9
T
ota
l
num
b
er o
f
sentences nee
d
e
d
to trans
f
er t
h
e message,
1
to
9
!-- VDM,x,x,x,
a
,
s--s
,