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Programmed mode
Spontaneous mode
Automatic mode
The internal modem will remain on and in Stand-by for 60 minutes after the
monitor station was switched on. Afterwards, the modem will be switched
on and off depending on the "Schedule for MODEM" settings:
For further information see paragraph 3.12.2
The above picture shows the "schedule for MODEM" setting to place the
modem in stand-by mode at 12:05 for 1 hour (4 quarters) every 24 hours.
It means that every day the monitor station is able to receive, or to
originate, calls from 12:05 to 13:05.
If the monitor station is switched on at 11:30 the modem will be switched in
stand-by mode until 12:30.
At 12:30 it will be switched off until 12:05 of the next day. No
communications will be possible in this window time.
Instead, in case the monitor station is switched on at 10:50 the modem will
be switched in stand-by mode until 11:50. Then OFF for 15 minutes until, at
12:05 of the same day, switched again in stand-by mode for 4 quarters by
the "schedule for MODEM" settings.
In Spontaneous mode, whenever an alarm condition occurs or when the
normal conditions are restored (e.g. exceeding the threshold value set for
the field intensity or returning below the threshold) the GSM modem is
switched on directly by the monitoring station either to make a call or to
send an SMS (depending on the settings) to the modem number(s)
memorized.
Afterwards, the GSM remains on stand-by for 10 minutes.
Certain particular conditions - apart alarms - can cause the modem to be
switched on and off regardless of the programming time:
If both Stand-By parameters ("Schedule for Modem" and "Schedule for
SMS") are set to zero, the modem would never be switched on and
therefore the monitoring station would be unreachable. To avoid this
condition, at 11 a.m. of the internal clock, every day the modem is placed
on Stand-By for 30 minutes (the GSM modem where available).
Point to Point and FTP Communication
4-15
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