Siemens SIMATIC Manual page 439

You must provide a voltage and/or temperature during user calibration. You do this by using
the appropriate external wiring and an external voltage/temperature transmitter. As shown in
the figure "User-calibration status", the "Instructions" field indicates the numbers of the pins
where the calibration stimulus can be applied. The first pin number corresponds to the
positive terminal, the second to the negative terminal. The accuracy of the calibration
depends on the accuracy of the voltage/temperature supplied. To ensure that the module
maintains the specified measuring accuracy following user calibration, the
voltage/temperature provided must demonstrate an accuracy at least twice that defined for
the module. Inaccurate voltages or temperatures will result in an incorrect calibration.
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Figure 6-39
S7-300 Module data
Manual, 06/2017, A5E00105505-AJ
6.11 Analog input module SM 331, AI 6 x TC isolated (6ES7331-7PE10-0AB0)
Here you will find instructions on how to carry out the currently active calibration step
Here you will find information relating to the currently active calibration step
Here you will find information relating to the current status of the calibration procedure
Cancels the calibration function completely
Cancels the currently active calibration and returns to the calibration start screen
Skips the currently active calibration step
Confirms the currently active calibration step and proceeds to the next step
User-calibration status
Analog modules
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