Range Warning

The Range Warning functional unit monitors the measured value according to 2 limit values (min. and max.), counts overrange/underrange and reports this as an warning (Warning bit in the status). There is no limitation of measured values.
In the default setting, the Range Warning limit values are set to negative and positive full scale value, e.g. in the "±10 V" measuring range to LowRangeWarning = -10.7 V and HighRangeWarning = +10.7 V, exceeding the limit is then output as an error in the PDO status and LED.

Index	Name
80nD:2D	Low Range Warning
80nD:2E	High Range Warning

Notice

Changing the interface or IntegerScaler

If you modify interface 0x80nD:11 or IntegerScaler 0x80nD:12 (Extended/Legacy Range), the limit values will be reset to the default settings specified in the interface!

Result
PDO AI Status	Error bit
90n0:1D	Underrange Warning Counter
90n0:1E	Overrange Warning Counter

Resetting to the default setting according to the interface is done by

an interface change
or a de-energized setting [(re-)power cycle]
or the command x302n to index FB00:01 (channel 1: n=0, channel 2: n=1, ...).
During execution, "Status" 255 "busy" is displayed in index FB00:02, "0" means "successfully completed"
and the command x3001 "Reset all counters"

During command execution, "Status" 255 "busy" is displayed in index FB00:02, "0" means "successfully completed".

The firmware responds to an unknown command with