4.7 Distinction of dynamic or static values represented by localization information

The user wants to identify which values of localization information are static or change while runtime, to reduce communication overhead.

This leads to the requirement:

  • Values should provide information if the value of a frame is static or changing while runtime

OPC UA Core Spec Part 3 v1.05.1 provides a Constant bit within the Attribute AccessLevelEx of a Variable. See an explanation for use in 7.1 RelativeValueType.