Configuring Messages - Siemens SIMATIC NET S7-1200 Operating Instructions Manual

Table 5- 4
In this example, a value of 2.0 was configured for the threshold value trigger.
With the changes in the process value shown in the example, the threshold value trigger
fires twice:
● At the time 3.5 s: The value of the integrated deviation is at 2.0. The new process value
● At the time 6.0 s: The value of the integrated deviation is at 2.1. The new process value
In this example, if a deviation of the process value of approximately 0.5 should fire the
trigger, then with the behavior of the process value shown here a threshold value of
approximately 1.5 ... 2.5 would need to be configured.
5.8.7

Configuring messages

Configuring e-mails
If important events occur, the CP can send e-mails to a communications partner.
You configure the e-mails in STEP 7 in the Data point and alarm configuration. You can find
this using the project tree:
Project > directory of the relevant station > Local modules > CP 1243-1
For the view in STEP 7, refer to the section Configuring datapoints and messages (e-mails)
(Page 33).
CP 1243-1 DNP3, CP 1243-1 IEC
Operating Instructions, 02/2014, C79000-G8976-C312-02
Example of the integration calculation of a threshold value configured with 2.0
Time [s] Process value
stored in the send
(calculation
buffer
cycle)
0 20.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5 20.5
4.0
4.5
5.0
5.5
6.0 19.9
stored in the send buffer is 20.5.
stored in the send buffer is 19.9.
5.8 Notes on configuring individual functions
Current process Absolute deviation
value from the stored
20.0
20.3
19.8
20.2
20.5
20.3
20.4
20.5
20.4
20.1
19.9
20.1
19.9
Configuration and operation
Integrated
deviation
value
0 0
+0.3 0.3
-0.2 0.1
+0.2 0.3
+0.5 0.8
+0.3 1.1
+0.4 1.5
+0.5 2.0
-0.1 -0.1
-0.4 -0.5
-0.6 -1.1
-0.4 -1.5
-0.6 -2.1
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