Siemens SIMATIC S7-300 Manual page 18

3 Functional Mechanisms of this Application
3.1 Program overview
Call of SMS_Meld in OB1
The following figure and table show the call interface of the core user block FB
"SMS_Meld" in OB1.
Figure 3-2
Table 3-1
Symbol
Message_No
Send_msg
Value
Init_SMS
answer_flag
Order_No
NewOrder
Timer_Pol
The FB "SMS_Meld" function block is called cyclically in OB1 and then internally
calls the "SMS_sr" function block.
18
Data
type
INT Contains the number of the SMS message to be generat-
ed
BOOL Send trigger command
INT Optional coefficient
BOOL Initialization trigger command
BOOL sets telephonnumber to the one last SMS was received
from
INT Output order number
BOOL Set to TRUE when a new SMS message is received.
TIME Once the timer has elapsed, polling of the received SMS
messages starts.
Sending and Receiving SMS Messages with MD720-3
Explanation
V 2.1, ID Number: 25545680