Seneca S6001-RTU, User Manual

Page: 181 / 210

USER MANUAL – Z-TWS4/Z-PASS2-S/S6001-RTU
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19.1.5 GET_SMS
The GET_SMS FB gets an SMS, previously received, by means of a GSM modem;
once read, the SMS is deleted.
When first called, the FB runs a process which starts getting the SMS;
on subsequent calls, it only checks if the process has finished its job.
The FB has the following input parameters:
- SERIAL_PORT : this parameter is not used (it is still present only for
compatibility reasons); it can be set to '' (empty string)
- TIMEOUT : timeout, in seconds
- @ENABLE : TRUE -> FB is executed
FALSE -> FB is skipped
The FB has the following output parameters:
- RESULT : -2, when called with ENABLE=FALSE
-1, in case of any failure
0, if the process is still running
1, if the process has successfully finished and an SMS has been
found
2, if timeout has expired
3, if the process has successfully finished but no SMS has been
found
4, if PPP is active, on Z-MINIRTU
5, if MODEM_RESET FB is running
- SENDER : SMS sender (only if RESULT=1)
- DATETIME : Date/time of SMS reception (only if RESULT=1)
- TEXT : SMS text (only if RESULT=1)
Please note that the GET_SMS FB can't be successfully executed while the PPP
connection is active, on Z-MINIRTU.