Hanna Instruments HI 504903 - Manual (Page 14)

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SMS options:
• On “Repeated SMSs” field it is possible to set the number of
repeated SMSs to be sent. Each alarm or warning SMS sent
by the HI504903 device requires an explicit confirmation by
a back call from (one of) the cellular phone(s) that received
the message: this call is not answered by the HI504903, but
works as a confirmation about having read and understood
the alarm/warning message (see “SMS delivery” section). If
HI504903 does not receive this confirmation within a fixed
time interval (see the “SMS delay” section below), it will send
the alarm message again. With the “Repeated SMSs” op-
tion, it is possible to set the maximum number of alarm mes-
sages that will be sent in these conditions.
Note Default value is 2 repeated SMS’s.
Note Valid values are numbers from 0 (i.e. no repeated messages)
to 5. If an out-of-range value is inserted, a warning mes-
sage will be displayed and the maximum allowed value (i.e.
5) is automatically set.
• On “SMS Delay” field it is possible to set the delay between
two subsequent alarm/warning SMS’s (see “SMS’s deliv-
ery” section). This delay is related to the number of “Re-
peated SMSs” (see above).
Note Default value is 10 minutes.
Note Valid values are from 5 to 60 minutes. If an out-of-range
value is inserted, a warning message will be displayed and
the default value is automatically set.
Note If a zero value is set in the “Repeated SMSs” section, this
feature is disabled.
• On “Query Delay” field it is possible to set the delay between
a query operation and the following one of the alarm situa-
tion for all the connected devices made by HI504903. With
this option the maximum time for an alarm detection and the
relating SMS sending is set (see “Idle state” section).
Note Default value is 1 minute.
Note Valid values are from 1 to 10 minutes. If an out-of-range
value is inserted, a warning message will be displayed and
the default value is automatically set.
Note The actual interval for the query operation can be bigger
than the set value if many devices are connected to the RS485
link and the HI504903 interface has not enough time to
interrogate all the devices within the set time value.
upon a call from one of these phones. Valid values are num-
bers of a maximum of 20 digits, with the country code in front
and without spaces or “+” symbol (e.g. for Italy 39335.....)
Note At least a value for telephone number #1 must be inserted to
proceed with configuration.
Note The country code is necessary, otherwise HI504903 will not be
able to send any SMS.
Note The set phone number are not saved on the phonebook
area of the SIM card. If there are some phone numbers pre-
viously stored on any SIM card location, they will be not
overwritten.
HI 504903 date and time:
Date and time present in the HI504903 device can be read.
These fields can not be modified manually. To align the
HI504903 to the PC date and time, simply click on “Update
HI504903 Date and Time” check-box: the new values will be
displayed on the PC and the updating will take place when the
“Update All” button is pressed.
SIM Card options:
• On “Remaining SMSs” field it is possible to set the number
of remaining messages in the SIM card: this number gives
indication about the charge level of the SIM card. To know
the value to be inserted, divide the SIM card credit by the
cost of one SMS. This number will be decreased at every
sent message and when zero level is approaching, one or
more messages will be sent by the HI504903 device to
warn the user about the need of SIM card recharging.
Note It is useful to enable this feature in case of a rechargeable
SIM card, and disable it if an unlimited credit card is used.
If the feature is enabled, it is necessary to insert a value to
proceed with the configuration.
• On “Expiration Date” field it is possible to set the SIM card
expiration date (dd/mm/yy): this is the date after which the
SIM card expires if not recharged (usually after one year).
15 days, 7 days and 1 day before the expiration date, warn-
ing SMS messages will be sent to the programmed number(s).
Note It is useful to enable this feature in case of a rechargeable SIM
card, and disable it if an unlimited credit card or a special
rechargeable SIM card is used. If the feature is enabled, it is
necessary to insert a date to proceed with the configuration.