Measuring range monitoring: Status bits
Notice | |
Malfunction of the measuring range monitoring after incorrect user calibration The measuring range monitoring is located after the user calibration in the signal flow. Incorrect coefficients (offset, gain) in the user calibration can lead to the measuring range monitoring not functioning as expected. |
Three Status bits signal whether the current measured value of an analog input lies outside of the measuring range. See Process data for the analog inputs.
Status bit "Overrange"
If the Status bit "Overrange" is set:
- The current measured value is larger than the full scale value of the measuring range.
- The measuring error specified in the technical data is not guaranteed for the current measured value.
- If "Legacy range" is set, the variable Value does currently not correspond to the measured value.
The current measured value is larger than the largest displayable value in the "Legacy range".
Status bit "Underrange"
If the Status bit "Underrange" is set:
- The current measured value is smaller than the smallest value of the nominal measuring range.
- The measuring error specified in the technical data is not guaranteed for the current measured value.
- If "Legacy range" is set, the variable Value does currently not correspond to the measured value.
The current measured value is smaller than the smallest displayable value in the "Legacy range".
Status bit “Error”
If the status bit “Error” is set:
- The current measured value is smaller than the lower error threshold or larger than the upper error threshold.
- The LED “A” lights up red. It is linked to the status bit “Error”.
Further Information