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• OPC-10000-81 – OPC Unified Architecture - Part 81: UAFX Connecting Devices and Information Model
  6.2.4.2 EstablishConnections signature
  UserAccessDenied The change to a configuration Variable failed; this may result from a Lock existing on the Variable . Bad_NothingToDo Applying the Value to this Key was skipped because
• OPC-10000-81 – OPC Unified Architecture - Part 81: UAFX Connecting Devices and Information Model
  6.5.2 ControlGroupType definition
  restriction can block all changes to Variables or restrict changes to only the lock-owner (application or user). The lock-owner of the restrictions may be unrelated to the caller ... ListToRestrict are associated with that user or application (that user or application becomes the lock owner). The LockingServices exposed in ListToBlock and ListToRestrict ( InitLock , RenewLock , ExitLock ) can only be called
• OPC-10000-81 – OPC Unified Architecture - Part 81: UAFX Connecting Devices and Information Model
  6.5.3 EstablishControl method
  acquire Locks required by the ControlGroup in the ListToRestrict and ListToBlock . If acquiring any Lock fails, all Locks shall be released, and the appropriate LockStatus shall be returned ... have the well-known Role ConnectionAdmin as defined in Subclause 5.9 . EstablishControl shall set Lock LockingClient to the LockContext Argument . The signature of this Method is specified below; the arguments
• OPC-10000-81 – OPC Unified Architecture - Part 81: UAFX Connecting Devices and Information Model
  6.5.4 ReleaseControl method
  method This Method Call shall release the ControlGroup and issue a Call to the Lock Objects in each Folder for the ExitLock Method (see OPC 10000-100 ). It shall create
• OPC-10000-81 – OPC Unified Architecture - Part 81: UAFX Connecting Devices and Information Model
  6.5.5 ReassignControl method
  controlling entity as defined by the LockContext . It shall set Lock LockingClient to the LockContext Argument . It is recommended that this Method be restricted to Client connections that have ... Method Arguments Argument Description LockContext A string used to provide context information about the lock-owner. It may be the NodeId (in string representation) of a ConnectionEndpoint or the ApplicationUri
• OPC-10000-81 – OPC Unified Architecture - Part 81: UAFX Connecting Devices and Information Model
  6.5.6 ControlItemFolderType
  Subtype of the 5:FunctionalGroupType defined in OPC 10000-100 0:HasComponent Object 5:Lock 5:LockingServicesType M 0:HasProperty Variable 5:MaxInactiveLockTime 0:Duration 0:PropertyType O ConformanceUnits UAFX ... IFunctionalEntity ControlGroups The Lock is of LockingServicesType defined in Device Integration (see OPC 10000-100 ) and provides the basic locking functionality. As described in OPC 10000-100 , Locks will timeout
• OPC-10000-81 – OPC Unified Architecture - Part 81: UAFX Connecting Devices and Information Model
  6.7.4 EditConnectionConfigurationSets Method
  InvalidState . For the ConnectionConfigurationSets that allow editing, the Method shall also set the Lock to the Client Session associated with this Method Call . The Lock shall behave as described ... including the requirement to renew the Lock and to remove the Lock in the case of the Client Session exiting. If the Lock exits for any reason, the internal action
• OPC-10000-81 – OPC Unified Architecture - Part 81: UAFX Connecting Devices and Information Model
  6.8.2 ConnectionConfigurationSetType definition
  HasProperty Variable 4:RollbackOnError 0:Boolean 0:PropertyType M 0:HasComponent Object 5:Lock 5:LockingServicesType M 0:HasComponent Variable 4:SecurityKeyServer 4:SecurityKeyServerAddressDataType 4:SecurityKeyServerAddressType O 0:HasComponent Variable ... write privilege for the well-known Role ConfigureAdmin as defined in Subclause 5.9 . Lock is an instance of LockingServicesType , defined in OPC 10000-100 , which provides the basic locking functionality
• OPC-10000-81 – OPC Unified Architecture - Part 81: UAFX Connecting Devices and Information Model
  F.1.3 ConnectionConfigurationSetConfDataType
  ConnectionConfigurationSetType as defined in 6.8.2 with the exception that the elements ConnectionConfigurationSetStateMachine, Edit , and Lock as defined in the ConnectionConfigurationSetType are not part of this DataType . If this DataType ... shall be in State Ready, the Edit shall be set to False , and the Lock shall be assigned to the ConnectionManager . The ConnectionConfigurationSetConfDataType is formally defined in Table F.1 . Table