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.
Table 148 – SignalType additional References
|
SourceBrowsePath |
Reference Type |
Is Forward |
TargetBrowsePath |
|
SignalTag |
0:HasDictionaryEntry |
True |
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
|
BrowsePath |
Value Attribute |
|
SignalTag |
|