Siemens SIMATIC S7-300 Manual page 44
Sending and receiving sms messages via serial cps and the md720-3 gprs/gsm modem
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Also See for SIMATIC S7-300:
- Manual (676 pages) ,
- Reference manual (574 pages) ,
- Installation and operating manual (356 pages)
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6 Operation of the Application
6.1 Sending an SMS message (scenario 1/scenario 2)
No.
4.
In the "VAT_MELD" variable table, check whether the "Meld.SMS.READY" variable is set. If this
is not the case, enable "Init" and reinitialize the modem.
5.
The "Message_Number" variable contains the message number that is necessary to generate an
SMS message. Use the VAT to modify the value.
Enable "sms_send" to send the message.
6.
7.
Once the SMS message has been sent (without errors), reset the send trigger command
("sms_send" flag) since the trigger command reacts only to a positive edge.
44
Procedure
Sending and Receiving SMS Messages with MD720-3
V 2.1, ID Number: 25545680
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