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Last Detected Fault “E” Command
(Available in Zone mode ONLY)
The last detected radio fault and the last reported radio fault can be viewed by pressing “E” on a
7720P Programming Tool or an appropriate terminal when either device is connected to the serial
port of the 7720PLUS.
The message is a 2-line display where the top line identifies the last fault that the 7720PLUS detected
and the second line identifies the last fault that the 7720PLUS actually reported to the monitoring
network. The last detected fault represents a fault that occurred on at least one transmission, but
did not necessarily trip the fault relay. The last reported fault is a fault that was present for a
number of transmissions (typically at least 4 consecutive transmissions) and which tripped the fault
relay. The possible fault numbers are described in the “S” command paragraph above. If the detected
fault does not match the reported fault value, and the transmission cycle has finished, it indicates
that the fault was not present long enough for the radio to report the condition.
These values are stored in EEPROM and will be retained even when the 7720PLUS is powered down.
To erase the numbers from memory, press ESC (shift BS) as the next keystroke after pressing “E”.
The fault value is also erased automatically upon exiting program mode.
NOTE: Since the execution of this command requires access to the RJ11 connector, the antenna and
cover must be removed. By doing so, the radio will detect an RF fault as well as a tamper. To prevent
this fault from overwriting a previous fault, the radio does not write the last reported fault to
EEPROM if a tamper is detected.
Unique Contact ID Messages Generated in ECP Mode
The following is a list of messages generated by the 7720PLUS when it is in ECP mode. These
messages are in Contact ID format.
Message
Tramsmitted by
7720PLUS
Message
Displayed on 685
Description of Alarm
333008xx*
R330 C8xx*
Restore of any RF faults reported
to the panel.
(Restore of System Peripheral
Trouble).
134208xx*
334208xx*
E342 C8xx*
R342 C8xx*
ECP AC Loss
ECP AC Restore
133808xx*
333808xx*
E338 C8xx*
R338 C8xx*
ECP Low Battery
ECP Low Battery Restore
133908xx*
E339 C8xx*
ECP Power On/Reset
134108xx*
334108xx*
E341 C8xx*
R341 C8xx*
ECP Tamper
ECP Tamper Restore
13550000
33550000
E355 C000
R355 C000
Radio Lost Communication with
the Control Panel
Radio Re-established
communication with the Control
Panel
Note: “xx” is the Device Address programmed in the 7720PLUS radio. (see ECP Unique Programming
section).
