The SignalType provides ObjectType to add analog and discrete signals and is formally defined in Table 147. In order to have a common approach, PA-DIM will always use Objects, even if no Method is needed for some types.
Table 147 – SignalType definition
Attribute
Value
BrowseName
SignalType
IsAbstract
False
References
NodeClass
BrowseName
DataType
TypeDefinition
Other
Subtype of 0:BaseObjectType defined in OPC 10000-5, i.e. inheriting the InstanceDeclarations of that Node
0:HasProperty
Variable
SignalTag
0:String
0:PropertyType
M
Conformance Units
PA-DIM SignalSet
SignalTag is defined by IRDI as ABB271#009 which states “alphanumeric character sequence uniquely identifying a measuring or control point”
The components of SignalType have additional references which are defined in Table 148.
The child Nodes of the SignalType have additional Attribute values defined in Table 149. An empty field in the column “Value Attribute” means: the text field of the variable’s value attribute has the length 0.
Table 149 – SignalType Attribute values for child Nodes
