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SYSTEM cOb4MVNICATlONS
6
5
4+2 REPORTING
A 4+2 report consists of a 4digit account number and a P-digit alarm code, or
event code.
4+2 reports can be accomplished in two ways:
1. Either in ADEMCO Low Speed (10 pps), or SESCOAGtADI~NlCS (20
pps) format.
2. Eiiher in ‘standard’ or “expanded- zone reporting.
The terms ‘standard” and “expanded’ have a slightly different meaning than
previously described. In 4+2, standard zone reporting sends a 4-digit
account number fotlowed by a P-digit code, where the first digit is the ALARM
code and the second digit is the channel to which the zone alarm was
assigned. A report would look as follows:
1 2 3 4 3 9 (code3, channel9)
In 4+2 expanded zone reporting a unique P-digit code for each zone ‘event”
(27 zones max) is reported. A 4digit account number followed by a P-digit
code is sent, where the first digit is the actual event, such as in ALARM,
RESTORE, or TROUBLE, etc., and the second digit of the code represents
the “zone’ where the event occurred. (but not necessarily the actual zone
number). Each code in itself is unique to a specific zone! A report might look
as follows:
1 2 3 4 5 9 (6 9” might be a unique “TROUBLE RESTORE, ZONE 25).
To enable 4+2 standard reporting enter a 1 in field
l
54, and use fields ‘61
through ‘71 for programming channels and codes. Do not make any entries
in fields ‘72-‘81. To enable 4+2 expanded reporting, enter a 1 in field ‘53,
and use fields
l
72 through ‘81 to program up to 27 zones for unique event
reporting. Do not make any entries in fields ‘61-‘71.
4+2 “EXPRESS”
ADEMCO’s new Express format provides the same intonation as the 4+2
Expanded format, but with three differences:
1. The data is transmitted in DTMF (Dual Tone Multi-Frequency, known as
“TouchTone’, at the rate of 10 characters per second). This greatly
decreases the time il takes a report to go through to central station. An
average 4+2 Low Speed report might take as long as 20 seconds to
complete its report, but 4+2 Express takes under 3 seconds!
2. -Two message rounds are eliminated by the use of a checksum digit.
‘Instead of the communicator sending 2 rounds per report. it sends only 1
round with a checksum digit at the end. Doing this also helps in
decreasing the time it takes for a report to be sent. (CHECKSUM is
explained further at the end of this section).
3. The handshake frequency is 1400 Hz followed by 2300 Hz, and the
kissoff frequency is 1400 Hz.
To enable 4+2 Express, enter a 2 in field ‘48, and a 1 in field ‘53. Then use
fields
l
72 through ‘81 to program up to 27 zones for unique event reporting.
IMPORTANT:
1. Do not make any entries in fields ‘61-‘71.
2. If the installation uses zones 28-64 and this format is selected, events in
zones 28-64 will not be transmitted.
ADEMCO’s VISTA
XM
SERlES TECHNICAL REFERENCE MANUAL
WWW.DIYALARMFORUM.COM
(8 páginas)
(173 páginas)
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