Siemens SIMATIC S7-300 Manual page 16

2 Solution
2.4 Performance data
Application software
The following table shows the performance data of the FB "SMS_Meld" user
block.
Table 2-11
Transmission rate with ASCII
driver
Number of message texts
Number of telephone numbers
Maximum text length
Maximum order length
Coefficient length
Measured data/empirical values
The following table shows typical key data and reflects the test environment for the
development of this application example. It provides only a rough basis.
Table 2-12
Criterion
Request time of send-
ing an SMS message
Number of different
stations
Modem initialization
duration
16
Criterion
9600 bps
20
5
30 characters
10 characters
6 characters
Empirical value
10 sec
Unlimited
25 sec
Performance
data
Can be changed in the block.
Can be changed in the block.
Can be changed in the block.
Can be changed in the block.
Can be changed in the block.
A variable of the INTEGER type is
used as a coefficient.
In the user program, this variable
is converted as a STRING.
Average time from send trigger com-
mand to end of send operation.
Average time from initialization trigger
command to end of initialization.
Sending and Receiving SMS Messages with MD720-3
Note
Remark
V 2.1, ID Number: 25545680