Acn - Alert Command; Ala - Set Detail Alarm Condition; Appendix 4 Digital Interface - Furuno VR-7000 Installation Manual

APPENDIX 4 DIGITAL INTERFACE

Digital Interface

ACN - Alert command

$--ACN,hhmmss.ss,aaa,x.x,x.x,c,a*hh<CR><LF>
1 2
1. Time (UTC)
2. Manufacturer mnemonic code (3 digits)
3. Alert Identifier (0 - 9999999)
4. Alert Instance (1 - 999999,nul)
5. Alert command (A,Q,O,S)
A=acknowledge
Q=request/repeat information
O*=responsibility transfer
S=silence
*: Not supported.
6. Sentence status flag (C) (fixed)

ALA - Set detail alarm condition

$ -- ALA, hhmmss.ss, aa, aa, xx, xxx, A, A, c—c *hh<CR><LF>
1 2
1. Event time
Event time of alarm condition change includeing acknowledgement state change. If this is not available,
this shouled be a null field.
2. System Indicator of original alarm source
Indicator characters as system of alarm source. This field is two fixed characters, see IEC61162-1 Ed.4.
3. Sub system equipment indicator of original alarm source
Indicator characters as sub-system of alarm source. This field is two fixed characters, see IEC61162-1
Ed.4. For group alarms or if no sub-system can be identified, this should be a null field.
4. Instance number of equipment/unit/item
Instance number identifying the equipment, unit or item. This field is two fixed numeric characters.
5. Type of alarm
Type of alarm. This field is three fixed numeric characters as defined in IEC61162-1 Ed.4. Codes 900 to
999 are user definable.
6. 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 = ararm state (extreme low threshold exceeded, i.e. not reached);
X = other.
7. Alarm's acknowledged state
This field is a single character specified by the following:
A = acknowledged;
V = not acknowledged;
B = broadcast (acknowledged not applicable);
H = habour mode;
O = override.
8. Alarm's description text
Additional and optional descriptive text/alarm detail condition tag. Maximum number of characters will be
limited by maximum sentence length and length of other fields.
3 4 5 6
3 4 5 6 7 8
AP-13