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Express Interface Specification Overview
The Xi specification groups the methods into multiple contract. Each
contract can be assigned suitable communication bindings and access rights.
Compare the Xi specification with other
OPC specifications for a better understanding.
IResourceDiscovery Contract
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Context Management
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Initiate
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ReInitiate
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Conclude
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ClientKeepAlive
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Discovery
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Identify
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Status
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LookupResultCodes
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FindObjects
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FindTypes |
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FindRootPaths
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GetTypeAttributes
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GetStandardMib
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GetVendorMib
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Endpoint Management
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AddListToEndpoint
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RemoveListsFromEndpoint
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List Management
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DefineList
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DeleteLists
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GetListAttributes
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ModifyListAttributes
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AddDataObjectsToList
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RemoveDataObjectsFromList
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AddEventMessageFields
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EnableListUpdating
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EnableListElementUpdating
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TouchDataObjects
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TouchList
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Alarm and Events
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GetAlarmSummary
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IServerDiscovery Contract
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DiscoverServerInfo
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DiscoverServers
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IRead
Contract
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ReadData
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ReadEvents
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ReadJournalDataAtSpecificTimes
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ReadJournalDataChanges
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ReadJournalDataForTimeInterval
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ReadJournalDataProperties
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ReadCalculatedJournalData
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ReadJournalEvents
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Write
Contract
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AcknowledgeAlarms
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Passthrough
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WriteData
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WriteJournalData
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WriteJournalEvents
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IPoll
Contract
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PollDataChanges
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PollEventChanges
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IRegisterForCallback Contract
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