Cause : Calibration data not plausible comes when during booting, the calibration data for the analog inputs is read and checked with respect to plausibility. At least one calibration data point was determined to be invalid.

- power down/power up the power supply for the Control Unit.

1. If it reoccurs, replace the module.
2. In principle, operation could continue.
3. The analog channel involved possibly does not achieve the specified accuracy.