6 1
The phone call advises the user that something happened on
the PCA analyzer and SMS is going to be received. Is not
necessary to answer the phone call and it is suggested to
close it without any answer.
A confirmation of the alarm message reception is waited by
the analyzer. The confirmation can be done by simply calling
the PCA analyzer phone number (number of the GSM module).
The analyzer will hang up without answering and will send Info
SMS (this confirmation is managed as an information request;
see further on for details). Info SMS don’t need confirmation.
If “RepeatNo” is more than 0, the instrument sends repeated
(1 to 5 times) alarm messages if confirmation is not received.
This feature prevent losing of the message due for example to over-
load of the telephone network. The “0” is associated with no repeti-
tion: only one message will be sent and no confirmation waited.
The delay (5 to 60 minutes) between two subsequent repeated
messages could be set on the “Delay” line.
Note:
A remote connection will cancel the confirmation waiting. Also,
the analyzer events occurred during a remote connection will
not generate any alarm SMS, even after the remote connec-
tion ends.
Example of alarm SMS:
“Temp Err;L Ph;H Temp;Pwr rst;” (see Errors,
Alarms and Warnings chapter for details)
Info SMS
When the instrument receives a phone call (coming from one
of the programmed cellular numbers), it interprets the calling
as an information request and reacts hanging up and
sending an info SMS.
The maximum number of characters for an SMS is 160, so, if
the message text is longer, many messages will be sent. In this
case a message header is added with informations about the
message type and the current / total number of SMSs (for
example INF1/2: ).
It is possible to ask the PCA 311-331 for Info SMS from a
cellular phone different from the one(s) set in the analyzer.
This is accomplished by sending to the instrument the SMS:
“PxxxxAWE”, where xxxx is the analyzer’s password (the one
used for settings).
The instrument will recognize the command and reply sending
the Info SMS.
