Output range monitoring (0x682199, 0x602199)

Three status bits signal whether the current output value is outside the output range.

"Overrange" / "Underrange" (Index 0x60B0:01)
If the "Overrange" / "Underrange" status bit is set, the following applies:

• The current output value is outside the nominal output range.
• The output error specified in the technical data is not guaranteed for output values outside the nominal measuring range.
• If "Legacy Range" is set:
• The current value of the "Analog output" variable does not correspond to the output value.
  The current output value is greater / smaller than the largest / smallest presented value in the "Legacy range".
• The limit value settings via 0x80BD:17 / 18 are ignored. If the "Error AO" LED lights up, the error bit is set.

"Error" (Index 0x60B0:07)
If the status bit "Error" is set, the following applies:

• The current output value is smaller than the lower error threshold or larger than the upper error threshold. (In the factory setting, corresponds to the monitoring of the technical output range "Extended Range" s. Error thresholds)
• The LED "Error AO" lights up red. It is linked to the status bit "Error".

Error thresholds

The error thresholds can be set in "Extended Range" mode via the indices:

• 0x80BD:17 "Low Range Error",
• 0x80BD:18 "High Range Error".

In the factory setting, the error thresholds lie at the smallest and largest displayable values of the technical output range ("Extended range").

Exceeding the error thresholds is signaled by:

• The "Error" status bit is TRUE.
• The Status LED "Error AO" lights up red.
• Display of the DiagMessage with the text ID 0x870A "Analog range error"
  (see chapter "EL8601-8411 - Diag messages").