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5 result(s) for Constant

• OPC-10000-3 – OPC Unified Architecture - Part 3: Address Space Model
  8.58 AccessLevelExType
  Server shall ensure the Value of the Variable is persisted over a restart. The Constant Field represents the changeability of the Variable and if changes in its Value trigger changes ... NamespaceMetadata Object for the Namespace of the Variable ). Table 41 defines the combinations of Constant and NonVolatile Fields and their use cases. Table 41 - Use Cases of Constant and NonVolatile
• OPC-10000-5 – OPC Unified Architecture - Part 5: Information Model
  7.27 FrameType
  HasComponent Variable CartesianCoordinates CartesianCoordinates CartesianCoordinatesType Mandatory HasComponent Variable Orientation Orientation OrientationType Mandatory HasProperty Variable Constant Boolean PropertyType Optional HasComponent Variable BaseFrame NodeId BaseDataVariableType Optional HasProperty Variable FixedBase Boolean PropertyType Optional ... DataType Frame does not define the fields itself, but subtypes shall create those fields. Constant is True when the Value of the frame never changes. If the Value may change
• OPC-10000-210 – OPC Unified Architecture - Part 210: Relative Spatial Location
  4.7 Distinction of dynamic or static values represented by localization information
  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
• OPC-10000-210 – OPC Unified Architecture - Part 210: Relative Spatial Location
  7.1 RelativeValueType
  HasComponent Variable Base 0:NodeId 0:BaseDataVariableType O To express if the Value is constant and does not change, the Constant bit of the Attribute AccessLevelEx of the RelativeValueType Variable ... True. To express if the base (on which the value is based) is constant, the Constant bit of the Attribute AccessLevelEx of the Variable Base shall be set to True
• OPC-10000-210 – OPC Unified Architecture - Part 210: Relative Spatial Location
  Annex C Relative Spatial Location examples (Informative)
  Annex C Relative Spatial Location examples (Informative) To show usage of the Constant bit of the Attribute AccessLevelEx , which provides the information about dynamic or static behavior, the figures ... Annex C are simplified in the following way (see Figure 12 ) : "Constant" is used for the Constant bit of the AccessLevelEx Attribute of the Variable itself "ConstantBase