For all Nodes specified in this specification, the Attributes named in Table 3 shall be set as specified in the table.
Table 3 – Common Node Attributes
|
Attribute |
Value |
|
DisplayName |
The DisplayName is a LocalizedText. Each server shall provide the DisplayName identical to the BrowseName of the Node for the LocaleId “en”. Whether the server provides translated names for other LocaleIds is vendor specific. |
|
Description |
Optionally a vendor specific description is provided |
|
NodeClass |
|
|
NodeId |
The NodeId is described by BrowseNames as defined in 3.4.2.1 and defined in Annex A. |
|
WriteMask |
Optionally the WriteMask Attribute can be provided. If the WriteMask Attribute is provided, it shall set all Attributes to not writeable that are not said to be vendor-specific. For example, the Description Attribute may be set to writeable since a Server may provide a server-specific description for the Node. The NodeId shall not be writeable, because it is defined for each Node in this specification. |
|
UserWriteMask |
Optionally the UserWriteMask Attribute can be provided. The same rules as for the WriteMask Attribute apply. |
For all Objects specified in this specification, the Attributes named in Table 4 shall be set as specified in the table.
Table 4 – Common Object Attributes
|
Attribute |
Value |
|
EventNotifier |
Whether the Node can be used to subscribe to Events or not is vendor specific |
For all Variables specified in this specification, the Attributes named in Table 5 shall be set as specified in the table.
Table 5 – Common Variable Attributes
|
Attribute |
Value |
|
MinimumSamplingInterval |
Optionally, a vendor-specific minimum sampling interval is provided |
|
AccessLevel |
The access level for Variables used for type definitions is vendor-specific, for all other Variables defined in this part, the access level shall allow a current read; other settings are vendor specific. |
|
UserAccessLevel |
The value for the UserAccessLevel Attribute is vendor-specific. It is assumed that all Variables can be accessed by at least one user. |
|
Value |
For Variables used as InstanceDeclarations, the value is vendor-specific; otherwise it shall represent the value described in the text. |
|
ArrayDimensions |
If the ValueRank does not identify an array of a specific dimension (i.e. ValueRank <= 0) the ArrayDimensions can either be set to null or the Attribute is missing. This behaviour is vendor-specific. If the ValueRank specifies an array of a specific dimension (i.e. ValueRank > 0) then the ArrayDimensions Attribute shall be specified in the table defining the Variable. |
For all VariableTypes specified in this specification, the Attributes named in Table 6 shall be set as specified in the table.
Table 6 – Common VariableType Attributes
|
Attributes |
Value |
|
Value |
Optionally a vendor-specific default value can be provided |
|
ArrayDimensions |
If the ValueRank does not identify an array of a specific dimension (i.e. ValueRank <= 0) the ArrayDimensions can either be set to null or the Attribute is missing. This behaviour is vendor-specific. If the ValueRank specifies an array of a specific dimension (i.e. ValueRank > 0) then the ArrayDimensions Attribute shall be specified in the table defining the VariableType. |