Read-and-write property controlling the behavior of sending a value in writing operations. This property must be configured according to the OPC UA server used, or the writing fails. Possible values for this property are the following:

•0 - wvmDefault: Follows the default behavior (the behavior configured in the OPC UA Driver to which this OPC UA Block Tag belongs)

•1 - wvmValueOnly: Writes only the value

•2 - wvmValueQualityTimestamp: Always sends the quality and time stamp together with the value