Setting The Modem Parameters - Siemens SIMATIC S7-300 Manual

5.1.3

Setting the modem parameters

Before you can send and receive SMS messages, you have to store the following
information for the initialization of the MD720-3 modem:
PIN of the SIM card in the modem.
Number of the short message service center (see library description
"25545680_Library_SMS_MD720_DOKU_V2.0_e.pdf", table 4-1 "SMS_SCA").
In addition, the text to be sent and the telephone number of the recipient must be
entered.
Table 5-3
No.
1. Open the FB "SMS_Meld" SCL source of the SMS_Example project.
2. For the Pin_code parameter, enter the PIN of the SIM card you have inserted into the MD720-3
and for the Service_No parameter, enter the short message service center number.
Make sure that you replace only the telephone number (+49xxxxxxxxxx), the "$R" control char-
acter must NOT be deleted!
3. In the Text array, you can enter the individual message texts that are to be sent for the as-
signed Message_No (to the array index).
Sending and Receiving SMS Messages with MD720-3
V 2.1, ID Number: 25545680
5 Commissioning of the Application
Procedure
5.1 General preparations
35