Carel PlantWatch, Installation And User Manual

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Cod. Carel. +030221221 – rel. 1.0 dated 20/02/01 

24

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The fax calls are made to the numbers entered during configuration. The logic used to manage the calls can be configured; this 
can be 

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, in which case the fax is always sent to all the numbers entered, or 

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 Conditional configuration allows 

the fax to be sent to recipient B only if A does not answer, or alternatively to C only if B does not answer. See the corresponding 
parameters on the screen 

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. 

Before a call is considered as having failed, six attempts are performed in the following sequence: 
 

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1  
2 

20 seconds after the 1

st

3 

1 minute after the 2

nd

4 

1 minute after the 3

rd

5 

2 minutes after the 4

th

6 

4 minutes after the 5

th

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Calls to any other fax numbers entered or the data centre are made during the delay between one attempt and the next. 
 

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The SMS message is sent as soon as the remote-signal alarm condition is activated. Each individual alarm event produces an 
SMS message.  
The SMS is sent to the 3 recipients is always 

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 in that, unlike the fax, where the receipt of the message by a determined 

number can be confirmed, for the SMS this is impossible, as the confirmation always comes from the service centre, and it makes 
no sense to manage calls to alternative numbers. 
 
 

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The GSM modem immediately sends the message as soon as a remote signal alarm condition occurs. The send is considered as 
having been performed if the network operator’s server confirms reception; in the event no confirmation is received, a further 5 
attempts are made to send the message, at 30 second intervals. If the message can not be sent, a failed SMS send event is 
generated.  The 

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of the message received on the cellular phone is always the number of the caller, in this case, the 

telephone number associated to the SIM card in the GSM modem. 
 
 

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The SMS can be also sent using an internal or external PSTN modem. In this case, the messages are sent by connecting to a 
service centre that effectively transfers the message to the GSM network.  The PlantWatch supports the TAP and UCP protocols, 
which are the most commonly used transmission standards internationally. These standards also allow connection to service 
centres for sending text messages to pagers.  The message is transmitted in two phases: in the first phase, the call is made to the 
service centre, the telephone number of which needs to be configured using the screen 

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, while in the second phase the message 

is transmitted to the service centre.   The SMS message is considered as having been delivered when the centre sends the 
confirmation code. The effective receipt of the message may take a number of hours, and will only occur if the operator of the 
centre has stipulated a roaming agreement with the network operator of the recipient of the message. If this is not the case, the 
message may be confirmed by the centre even if the operator has not sent it to the recipient.  If the send fails, PlantWatch makes 
repeated attempts to send the message, according to the times described in the paragraph 

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Calls to fax numbers or the data centre are made during the delay between one attempt and the next.  The 

identifier of the message received on the cellular phone depends on the type of protocol used to connect to the service centre. In 
the case of the UCP protocol, PlantWatch sets this value as numeric code of the installation; see the corresponding parameter on 
screen 

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. In the case of the TAP protocol, the value of the identifier can not be set, and it therefore takes the standard code set 

by the service provider. 

The cellular phone numbers of the recipients should be entered with or without the international access code, according to the 
requirements of the operator. When the configuration requires the UCP protocol, the international access code “+” is translated 
by the PlantWatch software into the sequence “00”, as the standard only allows numeric characters; in the other cases, the 
numbers must be entered in the format “0039......” rather than “+39....”, unless otherwise specified by the operator.