For all Variables specified in this specification, the Attributes named in Table 6 shall be set as specified in the table.
Table 6 – 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. |