Overrange, Underrange and signal fault in SignalInReal

Hello,

I am using SignalInReal function block. I am trying to figure out how to use OverRange and UnderRange, but with no luck. I already have the input on enable EnableOverUnderRange, but the output OverUnderRangeEnabled remains false. In addition to this, does this block give me two separate bits for OverRange and UnderRange or not and which bit should I use for OverRange and UnderRange.

One more question, does the parameter AEError represents the signal status if there is a fault? And what does ParError parameter represents? It goes True when the value is above or bellow the min and max values.

Thanks.