User Guide

74
the cellular module initialized and
the SMS service activated. During
the reading of the SIM card, “CELL”
and the MEM tag will blink alter-
natively on the LCD.
Otherwise, if the instrument does
not find any correct number, then
it will not be possible to activate
the SMS service and the WRONG
tag will blink on the LCD.
If the PIN set in P.01 is wrong, then it will be not possible to
confirm the cellular module connection.
Note If the first attempt to initialize the GSM engine fails because
of a wrong PIN, then no other attempt will be allowed until
the setup item P.01 is modified (prevention of sending three
wrong PINs. Infact if it happens, the user has to extract the
SIM card and manually enter the PUK using his own cellular
phone to unlock the SIM card).
The communication baud rate is set through the item O.30
and it is the same both for a “PC” connection and for the HI
504900 GSM module connection. Normally there is no need
to modify the default baud rate (19200).
Note It is important to set the desired baud rate before enabling
the SMS service. The GSM cellular mode will automatically
recognize the baud rate during the initialization. Once acti-
vated the SMS service, it is important NOT to change the
baud rate during the normal functioning of the instrument.
If a baud rate changing is required, first switch setup item
P.00 to “PC”, then change the baud rate (setup item O.30),
and finally reactivate the SMS service switching item P.00 to
“CELL”.
To have an error associated with the SMS service, the user
has to select a proper configuration in the Error group (see
“Setup mode” section).
When an error configurated for the SMS service is switched
on, the following message will be sent to the programmed
phone numbers: “Rem_msg: xxx; The following error occurred
on HI504: XXXXX”.
“xxx” stands for a three digits number indicating the remain-
ing messages; “XXXXX” stands for a text string correspondent