Siemens SIMATIC ET 200AL, Системное руководство

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What you should know about analog technology
2.7 Operational and basic error limits
Analog value processing
Function Manual, 06/2014, A5E03461439-AC
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Example of output error calculation
An analog output module is used for voltage output in a range of 0 to 10 V. The module is
operating at an ambient temperature of 30 °C, which means that the operational limit applies.
Technical specifications of the module:
●
Operational limit for the voltage output: ±0.1 %
The result is an output error of approximately ±10 mV (±0.1 % of 10 V) across the rated
range of the module.
For example, the output value may range from 2.49 V to 2.51 V at an actual voltage of
2.50 V.
Note
Bipolar measuring ranges
The calculation also applies to bipolar measuring ranges.
An error of ±10 mV is also returned at an input range of ±10 V and a linearity error of ±0.1%.