Siemens SINAMICS S120 Commissioning Manual page 51

Field/ Description
Mathematical
functions
ABS Absolute value
Calculates the size of a number.
Examples
ABS(5)
ABS(-3)
ABS(-3.14)
MOD Modulo
Calculates the residual value of a division
Examples
MOD(5,3)
MOD(3.14,3)
REC Reciprocal value (1/x)
DIFF Numerical differentiation
1)
Examples
Formula:
INT Numerical integration
1)
Examples
Formula:
RMS Quadratic mean
1)
The quadratic mean is given by first adding the squares of all the measured values and dividing them
by the number of measured values. The quadratic mean is the square root of this value.
Examples
Formula:
AV Mean value filter from 1st to 5th order
If the specification of an order is missing, the mean filter of the 1st order is used.
Examples
AV($0,1)
AV($0,5)
π Mathematical constant Pi
AM Arithmetic mean
The arithmetic mean is a moving average over five measuring points.
Commissioning with Startdrive
Commissioning Manual, 11/2017, 6SL3097-4AA10-0BP1
→ 5
→ 3
→ 3.14
→ 2
→ 0.14
DIFF($0,SAMPLETIME)
INT($0,SAMPLETIME)
RMS($0,SAMPLETIME)
→ Mean filter 1st order
→ Mean filter 5th order
Startdrive commissioning tool
2.5 User interface - trace function
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