System Communication and Operation
6-3
Where:
SSS or SSSS = Subscriber ID C = Close Code–1st Digit
A = Alarm Code–1st digit*** U = User Number (in hex)
Z = Typically Zone Number*–2nd digit Gg = Test Code (1st & 2nd digits)
Tt = Trouble Code (1st & 2nd digits) R = Restore Code (Alarm)
Bb = Bypass Code (1st & 2nd digits) R
T
t = Restore Code (Trbl) 1st & 2nd digits
EA
C =
AC Loss Code (1st & 2nd digits) R
B
b = Restore Code (Byps) 1st & 2nd digits
LL
B =
Low Battery Code (1st & 2nd digits) R
A
A
C
=
Restore Code (AC) 1st & 2nd digits
O = Open Code–1st Digit R
L
L
B =
Restore Code (Bat) 1st & 2nd digits
*Zone numbers for:
& #, or B = 99 Duress = 92
1 +
, or A = 95
3 + #, or C = 96
*** 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
Robofon 8 format send data in a pulsed frequency format in the following protocol:
First bit Last Bit
Tone = 0, No tone = 1
Freq = 1000Hz ± 5Hz
First Byte Last Byte
50 baud (20ms / bit)
200ms / char, 11 chars / message
(‘U’ = 55h and ETX = 03h)
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)
0 B0 B1 B2 B3 B4 B5 B6 Par 1
‘U’ N1 N2 N3 N4 N5 N6 N7 N8 ETX chk
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