77
The information about SIM charge and expiration date are
not saved in the SIM card but are managed by the network
operator; the instrument can not get directly the information .
To prevent the discharge of the SIM card, the user has to
configure manually (accordingly with the credit stored on
the SIM card) the maximum number of SMSs that can be
sent (item P .04) .
Note
Every time an SMS is submitted, the item P .04 is updated and
it will always indicate the remaining number of messages
that can be sent by the instrument .
When the number of remaining messages is going to reach
zero (the lower limit depends on the value of item P .05),
the message “Rem_msg: xxx; Maximum number of Sms
reached . Please check the
HI504
SIM card charge level”
will be sent by the instrument to the programmed phone
number(s) . This particular situation is managed as an er-
ror occurrence and a confirmation of the SMS reception is
waited .
In this case the user is supposed to extract the SIM card from
the cellular module as soon as possible and to check the
remaining credit (using its own cellular phone and calling
the network operator) .
When a confirmation is given to the message, the “Cellular
error” is switched on and no more messages will be sent by
the instrument in case of error occurrences . To disactivate
the “Cellular error”, it is necessary to modify the item P .04 .
Every time a recharge of the cellular module SIM card is
performed, the corresponding expiration date has to be
manually updated in the Setup menu (items P .07 - P .09) .
A check is performed daily between the current (see “Real
time clock” subgroup in Setup menu) and the expiration
date . Two weeks before the expiration date, the message
“Rem_msg: xxx; The HI504 SIM card will expire on: DD-
MM-YYYY . Please recharge or substitute it” is sent to the
programmed phone number(s) . The same message will be
sent again also one week before, and the day before the
expiration date .
Note
This particular warning message does not need confirma-
tion .
