EQUIPMENT: T1200-C
PUBLICATION: MARINEC-P-A
ISSUE No. & DATE: 3 02/14
© 2014 Thorn Security Ltd PAGE 27 of 67
Registered Company: Thorn Security Ltd. Registered Office: Dunhams Lane Letchworth Garden City Hertfordshire SG6 1BE
10.2.2 ZONAL FAULT Sentence Structure
This sentence takes the following form:
$ttfff,hhmmss.ss,aa,bb,dd,eee,f,g,c—c*hh<CR><LF>
$ – start of sentence
tt – Talker Identifier = FR (Fire detection system)
fff – Sentence Formatter = ALA (Set Detail Alarm Condition)
, – Field Separator
hhmmss.ss – Time of event = Leave Blank (VDROB has no clock)
aa – System indicator of alarm source = FR (Fire Detection System)
bb – Sub-system indicator of fire detection = OT (Others)
dd – Number of equipment = 01 (this is a quantity value)
eee – Number of Alarm Source = 901 (User Defined – General)
f – Alarm Condition = N (Normal) or H (Fault)
g – Alarm’s Acknowledge State = B (Broadcast, no acknowledgement required)
c—c – Alarm’s description text = Alarm description e.g. Zone 1 Fault
* – Indicates next two characters are the checksum
hh – Checksum (XOR of all bytes including commas but excluding $ and *)
<CR> – Carriage Return character = HEX 0D
<LF> – Line Feed character = HEX 0A
A fault on zone 8 of panel 1 would generate the following sentence:
$FRALA,,FR,OT,01,901,H,B,PANEL 01 ZONE 08 FAULT*6F<CR><LF>
The HEX data is:
24 46 52 41 4C 41 2C 2C 46 52 2C 4F 54 2C 30 31 2C 39 30 31 2C 48 2C 42 2C 50
41 4E 45 4C 20 30 31 20 5A 4F 4E 45 20 30 38 20 46 41 55 4C 54 2A 36 46 0D 0A
A fault cleared on zone 8 of panel 1 would generate the following sentence:
$FRALA,,FR,OT,01,901,N,B,PANEL 01 ZONE 08 FAULT CLEAR*10<CR><LF>
The HEX data is:
24 46 52 41 4C 41 2C 2C 46 52 2C 4F 54 2C 30 31 2C 39 30 31 2C 4E 2C 42 2C 50
41 4E 45 4C 20 30 31 20 5A 4F 4E 45 20 30 38 20 46 41 55 4C 54 20 43 4C 45 41
52 2A 31 30 0D 0A
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