Issue
In a Niagara R2 UNC, the standard output window displays the following error repeatedly:
Node.set Cast exception: nvi_7238 DsEnum <- DsFloatStatus [/DeltaHotel/lonTrunk/localLonDevice]
java.lang.ClassCastException
This occurs every few minutes and may impact normal operation.
Product Line
TAC IA SeriesEnvironment
- Niagara R2 UNC
- LON network integration
Cause
The error indicates an incompatible link between
Although the system allows the link, the data types are not fully compatible. This results in intermittent failures when property changes occur.
DsEnum and DsFloatStatus.Although the system allows the link, the data types are not fully compatible. This results in intermittent failures when property changes occur.
Resolution
- Insert a conversion object between the two points to ensure proper data type translation:
- If the link direction is float → enum, use a Float-to-Enum converter.
- If the link direction is enum → float, use an Enum-to-Float converter.
- Validate the link after adding the conversion object to confirm error resolution.
