The interface class “InterlockingVariableInterface” shall be used in order to reference variables representing an interlocking condition in external PLCopen XML document.
The InterlockingVariableInterface is formally defined in Table 37.
Table 37 - InterlockingVariableInterface Definition
|
Attribute |
Value |
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|
BrowseName |
InterlockingVariableInterface |
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|
IsAbstract |
False |
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|
References |
NodeClass |
BrowseName |
DataType |
TypeDefinition |
ModellingRule |
|
Inherit the components of the VariableInterface |
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|
|
|
|
|
|
|
|
HasProperty |
Variable |
ID |
BaseDataType |
PropertyType |
Optional |
|
HasComponent |
Variable |
SafeConditionEquals |
Boolean |
BaseDataVariableType |
Optional |
|
HasProperty |
Variable |
Version |
BaseDataType |
PropertyType |
Optional |
SafeConditionEquals indicates which value of the reference variable indicates a save state. Values are
- “TRUE”: indicates that the value “TRUE” of the variable within the PLCopen XML description represents the safe state of the signal group.
- “FALSE”: indicates that the value “FALSE” of the variable within the PLCopen XML description represents the safe state of the signal group.
Note: Use of the attribute is optional, default value is TRUE