saia-burgess PCD 7 Series, Руководство пользователя

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Saia-Burgess Controls Ltd.
Manual Modem PCDxx7 Serie│Doc. 26/793; Ed. E2│30.04.2005
Sending SMS
8
8-1
Structure/Parameterization of the SMS system
8 Sending SMS-TAP
The TAP function of the library gives the possibility to the system to send Short
Messages. This can be very useful for the system to signal an event or alarm to the
maintenance staff.
The protocol used for this SMS function is the TAP and the function allows sending
Messages with a maximum of 250 characters. Some TAP-Service provider allows a
smaller maximum of characters to send.
8.1 Structure
The TAP function has to be used in conjunction with the Modem function and Driver.
In fact you need the Modem function to establish the connection with the TAP center
and then the TAP function can be called.
Modem DRIVER
DB_Modem
MODEM
Calling FUNCTION
TAP function
FC801
SERIAL
COM 1
S7 user
application
DCD
DTR
TAP DB
DB810
Modem DRIVER
sub-function
FC700
Modem function
The TAP function is associated with an TAP Data Block. The Data Block is divided in
two areas. One is reserved for internal use of the function and the other area contains
the information about the application. The TAP function also need to access the sub-
function of the FC700 (Modem Driver sub-function). The synchronization between the
Modem Driver and the TAP function is made by the S7-application.
8.2 Parameterization of the TAP system
Most of the TAP system parameterization is done in the TAP Data Block. In the library
its number is the DB810 “TAP_DB” . But there is also one parameter that have to be
set in the modem Data Block
“DB_Modem”
. The number of the TAP-center has to
be entered in the modem Data Block.