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During the reading of the SIM
card, “CELL” and the MEM tag
will blink alternatively 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
HI504900
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 ac-
tivated 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 oc-
curred on HI504: XXXXX” .
“xxx” stands for a three digits number indicating the remain-
ing messages; “XXXXX” stands for a text string correspondent
to the activated error .