Siemens Simatic S7-1500 Manual page 175

The following figure shows how this works using a 10 Hz interference frequency suppression
as an example. A 10 Hz interference frequency suppression corresponds to an integration
time of 100 ms. The analog on-board I/O supplies a measured value to the CPU every
millisecond within the integration time.
Figure C-4
The following table provides an overview of the configurable line frequencies, the integration
time and the intervals within which measured values are supplied to the CPU.
Table C- 1 Overview of the configurable line frequencies
Interference frequency suppression
400 Hz
60 Hz
50 Hz
10 Hz
Note
Basic error with an integration time of 2.5 ms.
With an integration time of 2.5 ms, the measured value is changed by the following values
based on the additionally obtained basic error and noise:
• with "voltage", "current" and "resistance" by ±0.1 %
• with "Thermal resistor Pt 100 Standard" by ±0.4 K
• with "Thermal resistor Pt 100 Climatic" by ±0.3 K
• with "Thermal resistor Ni 100 Standard" by ±0.2 K
• with "Thermal resistor Ni 100 Climatic" by ±0.1 K
A detailed description of the basic and operating error is available in the function manual
Analog value processing (http://support.automation.siemens.com/WW/view/en/67989094).
CPU 1512C-1 PN (6ES7512-1CK00-0AB0)
Manual, 09/2016, A5E35306440-AB
Interference frequency suppression 10 Hz
Integration time
2.5 ms
16.6 ms
20 ms
100 ms
Analog value processing
C.1 Conversion method
Interval
2 x 1.25 ms
16 x 1.04 ms
20 x 1 ms
100 x 1 ms
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