Calibration Of Analog Input Module Sm 331; Ai 6 X Tc - Siemens SIMATIC Manual

Analog modules
6.11 Analog input module SM 331, AI 6 x TC isolated (6ES7331-7PE10-0AB0)
6.11.6

Calibration of analog input module SM 331; AI 6 x TC

Introduction
The SM 331 is calibrated at the factory and complies with the specified accuracy values. As
a rule, there is no need to recalibrate the module.
With certain systems, it may be advisable or even a requirement laid down in standards (as
required by particular institutions in the food and beverage or pharmaceutical industries) to
recalibrate the module once it has been integrated into the system, for example, at
specific time intervals.
Particularly in systems where sensors detect and/or process relatively low voltages and/or
currents, it may be advisable to perform recalibration when the module is in the system
including all connected cables. This approach compensates any influence by cables and/or
temperature.
If you carry out a calibration procedure, new calibration values are detected and saved
retentively on the module. This means that the calibration values determined for the module
at the factory prior to delivery are not lost when users perform their own calibration work.
You can revert to these original calibration values at any time.
Note
The calibration values from each channel are saved retentively on the module for a specific
measuring range, which means they only apply to the measuring range in which the user
calibration work was performed.
If the parameters of a channel which has active user-calibration values are reassigned to
change the measuring range, the calibration values saved at the factory for this channel and
this measuring range are used from this point on.
However, the user-calibration values still remain in the memory; they are not overwritten until
the user calibrates the channel again. But if the original measuring range is reset for this
channel without the user performing the calibration procedure again, the user-calibration
values which have already been established become effective once more.
Requirements
The calibration function can only be used in a distributed installation and in conjunction with
the SIMATIC PDM ("Process Device Manager").
The following requirements must be met to use the module calibration functions: SIMATIC
PDM V6.0 + SP3 or higher + HF2 in conjunction with HSP158, or SIMATIC PDM V6.0 + SP4
or higher, and the EDD for the ET 200M,
"DP_IOSystem_Siemens_ET200M_Module.Device", Version V1.1.10 or higher
User calibration is not permitted if the AI 6 x TC module is running in redundant mode.
434
S7-300 Module data
Manual, 06/2017, A5E00105505-AJ