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Where:
SSS or SSSS =
Subscriber ID
A = Alarm Code–1st digit***
Z = Typically Zone Number*–2nd digit
Tt = Trouble Code (1st & 2nd digits)
Bb = Bypass Code (1st & 2nd digits)
EA C = AC Loss Code (1st & 2nd digits)
LL B = Low Battery Code (1st & 2nd digits)
O = Open Code–1st Digit
*Zone numbers for:
*** For 4+2/Robofon 8 formats, 2-digit zone numbers can be reported by assigning the A (first) digit
as the first digit of the zone number, then assigning Z as the second digit of the zone number, if
desired.
Robofon 8 Format
send data in a pulsed frequency format in the following protocol:
Robofon 8 format
0
First bit
'U'
N1
First Byte
Physical format
• 1000 Hz +/- 5Hz pulsed signaling
• Tone = logical 0
• Silence = logical 1
• Speed is 50 baud, 20ms/bit, 200ms/character
Logical format
• Byte format is 7 bit data, odd parity.
• Code is always eight (8) digits, ASCII-characters 30h – 39h.
• The report format is as follows: SSSSSS XX
where:
SSSSSS is the 6-digit account number
XX is the 2-digit report code (as in 4+2 format)
& #, or B = 99
1 + , or A = 95
3 + #, or C = 96
B0
B1
B2
B3
Tone = 0, No tone = 1
Freq = 1000Hz ± 5Hz
N2
N3
N4
50 baud (20ms / bit)
200ms / char, 11 chars / message
('U' = 55h and ETX = 03h)
System Communication and Operation
C = Close Code–1st Digit
U =
User Number (in hex)
Gg =
Test Code (1st & 2nd digits)
R =
Restore Code (Alarm)
R T t =
Restore Code (Trbl) 1st & 2nd digits
R B b =
Restore Code (Byps) 1st & 2nd digits
R A A C =
Restore Code (AC) 1st & 2nd digits
R L L B = Restore Code (Bat) 1st & 2nd digits
Duress = 92
B4
B5
B6
N5
N6
N7
N8
Par
1
Last Bit
ETX
chk
Last Byte
6-3
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