Siemens SIMATIC S7-1500 Function Manual page 106

Settings and displays in the "Calculated signal" tab
You can use this function to calculate new signals based on real signals. The system
calculates the Y-values of the signal points in the process.
To parameterize the signals to be calculated, open the "Calculated signal" tab.
In the "General" section specify the name, the data type and color of a signal to be
calculated. Note that the name of the signal to be calculated must differ from the name of a
real signal.
Figure 3-59
Add the basic signals in the "Basic signals" section. The basic signals form the basis for
calculating the new signal. You can change the default name of the variable in the "Name"
column. You select real signals for the specification of the number of signal points to be
calculated in the "Signal" column.
Figure 3-60 "Basic signals" section of the "Calculated signal" tab
Enter the code for the calculation of the Y values of the signal points in the "Calculated signal
value" section. The section is divided into:
● Basic mode (expression)
● Advanced mode (JavaScript)
Use the JavaScript syntax to enter the code for both modes. Take into account, however,
that not the full JavaScript functionality is supported.
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Function Manual, 11/2019, A5E03484625-AG
"General" section of the "Calculated signal" tab
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