User manual

GSM modem protocol for pCO
2
Carel code +030220330 Rel. 2.0 del 30/10/02
26
7.1 Message reception outcome
Every 2 minutes, the pCO
2
downloads all the new SMS messages received.
If the message received is correct, the pCO
2
processes it every 15 seconds, in the absence of incoming or outgoing calls.
If the message is not correct, either due to the syntax or the password, it is deleted.
During the time needed for the correct processing of the message (about 7 seconds), the incoming calls are inhibited and then
enabled again at the end of the processing of each message.
If when downloading the new SMS messages, the memory dedicated to SMS messages is full, all the messages received will be
lost. In this case, any possible alarms may remain active.
The possible causes of the memory filling up are the following:
•
reception of three or more messages of maximum length (for the setting of 11 variables) within 2 minutes;
•
reception of 7 or more shorter messages (for the setting of one variable) within 2 minutes.
Carel reserves the right to modify the features of its products without prior notice.