[RQ6.5] To reduce the number of variations and to alleviate validation testing, the following restrictions apply to instances of SafetyProviderType and SafetyConsumerType (or instances of types derived from SafetyProviderType or SafetyConsumerType):
- The references shown in Figure 4 originating at SafetyProviderType or SafetyConsumerType and below shall be of type HasComponent (and shall not be derived from HasComponent) for object references or HasProperty (and shall not be derived from HasProperty) for property references.
- As BrowseNames (i.e. name and namespace) are used to find methods, the names of objects and properties shall be locally unique.
- The DataType of both Properties and MethodArguments shall be used as specified, and no derived DataTypes shall be used (exception: OutSafetyData and OutNonSafetyData).
- In OPC UA, the sequence of MethodArguments is relevant.
Table 4 – SafetyObjectsType Definition
|
Attribute |
Value |
||||
|
BrowseName |
SafetyObjectsType |
||||
|
IsAbstract |
True |
||||
|
References |
Node Class |
BrowseName |
DataType |
TypeDefinition |
Modelling Rule |
|
Subtype of BaseObjectType |
|||||
|
Conformance Units |
|||||
|
SafetySupport |
|||||
Table 5 – SafetyProviderType Definition
|
Attribute |
Value |
||||
|
BrowseName |
SafetyProviderType |
||||
|
IsAbstract |
False |
||||
|
References |
Node Class |
BrowseName |
DataType |
TypeDefinition |
Modelling Rule |
|
Subtype of SafetyObjectsType |
|||||
|
HasComponent |
Method |
ReadSafetyData |
|
|
Optional |
|
HasComponent |
Method |
ReadSafetyDiagnostics |
|
|
Optional |
|
HasComponent |
Object |
SafetyPDUs |
|
SafetyPDUsType |
Optional |
|
HasComponent |
Object |
Parameters |
|
SafetyProviderParametersType |
Mandatory |
|
Conformance Units |
|||||
|
SafetyProviderParameters |
|||||
[RQ6.6] Instances of SafetyProviderType shall use non-abstract DataTypes for the arguments OutSafetyData and OutNonSafetyData.
Table 6 – SafetyConsumerType Definition
|
Attribute |
Value |
||||
|
BrowseName |
SafetyConsumerType |
||||
|
IsAbstract |
False |
||||
|
References |
Node Class |
BrowseName |
DataType |
TypeDefinition |
Modelling Rule |
|
Subtype of SafetyObjectsType |
|||||
|
HasComponent |
Object |
SafetyPDUs |
|
SafetyPDUsType |
Optional |
|
HasComponent |
Object |
Parameters |
|
SafetyConsumerParametersType |
Mandatory |
|
Conformance Units |
|||||
|
SafetyConsumerParameters |
|||||