What steps do I have to take to calibrate the PR-devices when i have uncertanties in the measurement?

If the accuracy of the input or output of the module is no longer in accordance with the specification, it can be calibrated.

Each analog input and output has its own calibration coefficients for each sensor type.

– The calibration is performed using a reference signal source connected to the device input or output.

– The calibration coefficients are calculated based of the ratio between the current input signal and the reference signal and stored in the non-volatile device memory.

– If the calculated coefficients go beyond the permissible limits, a message about the error cause will be displayed.

For further concrete instructions on page 36 in the manual shows step by step instructions on how to calibrate input/ or output