SilentKnight VisorAlarm Plus 2U - Manual (Page 10)

VISORALARM - Introduction
I - 8
Doc.DM374-I
Ver. 1.0
The control panel is not given the frame sent acknowledgement (kissoff) until the said
acknowledgement is received from the automation software. If the mIP/IPDACT does not receive the
acknowledgement within 2 seconds, this carries on resending a configured number of times (between
5 and 10), after which connection with the Teldat VisorALARM PLUS 2U is assumed lost. As in the
case of supervision where the alarm send fails, this can be sent again this time to the backup
VisorALARM PLUS 2U if this functionality is configured. If communications also fail with the
backup then the control panel sends the alarm over the telephone line. From this point, the
mIP/IPDACT tries to re-establish communication with the two VisorALARM PLUS 2U as previously
described.
The IP VisorALARM PLUS 2U receiver on receiving an alarm from an mIP/IPDACT stores this in a
non-volatile internal memory. When the operation has successfully finished, it sends the
acknowledgement to the mIP/IPDACT originating the alarm so that this in turn sends to the associated
control panel. If the alarm storage memory cannot store the alarm, no acknowledgement is given.
As regards the SwAut, the Teldat VisorALARM PLUS 2U behaves as an alarm receiver that sends
alarms received through a serial port. The Teldat VisorALARM PLUS 2U can emulate a Sur-Gard, a
Radionics 6500 receiver or an Ademco 685. The serial line parameters are configurable as well as
those relative to the emulated receiver (link-test, receiver and line identifier, start and end frame
characters, etc.)